Amateur Geologist Makes Surprising Find (Japan)
|
| |
Posted by blam
On News/Activism 09/07/2003 12:38:36 PM EDT · 15 replies · 262+ views
IOL | 9-5-2003
Amateur geologist makes surprise find September 05 2003 at 08:45AM Tokyo - A crater from a meteorite impact more than 20 000 years ago has been discovered in the Japanese Alps, an amateur geologist announced this week. The crater is the first found in this country. Masao Sakamoto said the crater stretches 900m in diameter and spreads out across rugged, heavily forested land in Nagano state, about 160km west of Tokyo. Sakamoto, who announced his discovery at an academic symposium earlier this week, said it went largely unnoticed because only about 40 percent of the crater is visible. "If it...
|
|
|
Antarctic Craters Reveal Strike
|
| |
Posted by blam
On News/Activism 08/23/2004 9:58:34 AM EDT · 110 replies · 1,928+ views
BBC | 8-23-2004
Antarctic craters reveal strike The asteroid may have raised sea levels by up to 60cm Scientists have mapped enormous impact craters hidden under the Antarctic ice sheet using satellite technology. The craters may have either come from an asteroid between 5 and 11km across that broke up in the atmosphere, a swarm of comets or comet fragments. The space impacts created multiple craters over an area of 2,092km (1,300 miles) by 3,862km (2,400 miles). The scientists told a conference this week that the impacts occurred roughly 780,000 years ago during an ice age. When the impacts hit, they would have...
|
|
|
Apocalypse Then
|
| |
Posted by tbird5
On News/Activism 02/27/2006 12:39:21 AM EST · 56 replies · 1,065+ views
washingtonpost.com | February 26, 2006 | Joshua Foer
A mysterious cataclysm almost brought about the end of the world some 250 million years ago The last time Earth experienced a mass extinction, some 65 million years ago, at the end of the Cretaceous period, there is little doubt about what happened. A humongous meteor slammed into the Yucatan Peninsula, incinerating everything around for thousands of miles. Plumes of vaporized rock blanketed the planet in a layer of thick ash, blocking the sun and choking off photosynthesis. The entire global ecosystem virtually collapsed in a geological eye-blink. Though the dinosaurs might find it crass to say so, the late...
|
|
|
An Argument for the Cometary Origin of the Biosphere
|
| |
Posted by SunkenCiv
On General/Chat 09/06/2004 11:16:38 AM EDT · 70 replies · 522+ views
American Scientist | September-October 2001 | Armand H. Delsemme
Abstract: The young Earth appear to have been bombarded by comets for several hundred million years shortly after it was formed. This onslaught, perhaps involving hundreds of millions of comet impacts, is currently the best explantion for the origin of the Earth's oceans, atmosphere and organic molecules. Although historically a controversial idea, there is now a considerable amount of physical and chemical evidence supporting the theory. Comet scientist Armand Delsemme reviews the evidence and argues that comets from the vicinity of Jupiter contributed the bulk of the constituents found in Earth's biosphere.
|
|
|
Arizona Meteorite Crater Mystery Solved
|
| |
Posted by ZGuy
On News/Activism 03/09/2005 1:19:19 PM EST · 181 replies · 4,567+ views
AP via Yahoo | 3/9/05
It's a mystery that has puzzled scientists for years but researchers said Wednesday they have discovered why there isn't much melted rock at the famous Meteor Crater in northern Arizona. An iron meteorite traveling up to 12 miles per second was thought to have blasted out the huge hole measuring three-quarters of a mile across in the desert. The impact of an object at that speed should have left large volumes of melted rock at the site. But British and American scientists said the reason it didn't was because the meteorite was traveling slower than previously estimated. "We conclude that...
|
|
|
Asteroid 'Hit Northern Russia'
|
| |
Posted by blam
On News/Activism 10/05/2002 3:02:00 PM EDT · 154 replies · 564+ views
Ananova | 10-4-2002
Asteroid 'hit northern Russia' A large meteorite is thought to have smashed into a forest in a remote area of Russia. Residents in the town of Bodaibo, in the Irkutsk region of Siberia, saw a large luminous body fall from the sky. They say the impact caused the ground to shake and made a sound like thunder. Flashes of bright light could be seen above the impact site, which was a long way from any settlements according to the Russian newspaper Pravda. "Locals felt a strong shock, which could be comparable to an earthquake," said the report. "In addition to...
|
|
|
Asteroid Theory of Dinosaur Extinction Questioned
|
| |
Posted by anymouse
On News/Activism 03/01/2004 11:54:16 PM EST · 6 replies · 300+ views
Reuters | Mon Mar 1, 2004 | Maggie Fox
Scientists probing a vast crater off Mexico's Yucatan peninsula questioned a popular theory about dinosaurs on Monday, saying the collision that formed the crater happened too far back in time to have caused their extinction by itself. Much evidence points to the idea that an asteroid or comet gouged the Earth around 65 million years ago, triggering volcanic and climate changes that eventually wiped out the dinosaurs. When the huge, mostly underwater crater was found off Yucatan, it seemed the perfect candidate. "Since the early 1990s the Chicxulub crater on Yucatan, Mexico, has been hailed as the smoking gun that...
|
|
|
Astronomers unravel a mystery of the Dark Ages
|
| |
Posted by ckilmer
On News/Activism 02/03/2004 5:54:24 PM EST · 64 replies · 1,061+ views
EurekAlert | 3-Feb-2004 | Dr Derek Ward-Thompson
Public release date: 3-Feb-2004 Contact: Dr Derek Ward-Thompson derek.ward-thompson@astro.cf.ac.uk 029-2087-5314 Cardiff University Astronomers unravel a mystery of the Dark Ages Undergraduates' work blames comet for 6th-century "nuclear winter" Scientists at Cardiff University, UK, believe they have discovered the cause of crop failures and summer frosts some 1,500 years ago ñ a comet colliding with Earth. The team has been studying evidence from tree rings, which suggests that the Earth underwent a series of very cold summers around 536-540 AD, indicating an effect rather like a nuclear winter. The scientists in the School of Physics and Astronomy believe this was caused...
|
|
|
Cataclysm 3.9 Billion Years Ago Was Caused By Asteroids, Not Comets
|
| |
Posted by blam
On News/Activism 03/04/2002 9:31:38 AM EST · 13 replies · 207+ views
Science Daily | 3-4-2002
Date: Posted 3/4/2002 Cataclysm 3.9 Billion Years Ago Was Caused By Asteroids, Not Comets, Researchers Say WASHINGTON (February 28, 2002) -- The bombardment that resurfaced the Earth 3.9 billion years ago was produced by asteroids, not comets, according to David Kring of the University of Arizona Lunar and Planetary Laboratory and Barbara Cohen, formerly at the UA and now with the University of Hawaii. Their findings appear today in the Journal of Geophysical Research - Planets, published by the American Geophysical Union. The significance of this conclusion is that the bombardment was so severe that it destroyed older rocks on ...
|
|
|
A Celestial Collision
|
| |
Posted by SunkenCiv
On General/Chat 09/15/2004 12:04:28 PM EDT · 14 replies · 524+ views
Alaska Science Forum | February 10, 1983 | Larry Gedney
Early in the evening of June 18, 1178, a group of men near Canterbury, England, stood admiring the sliver of a new moon hanging low in the west. In terms they later described to a monk who recorded their sighting, "Suddenly a flaming torch sprang from the moon, spewing fire, hot coals and sparks." In continuing their description of the event, they reported that "The moon writhed like a wounded snake and finally took on a blackish appearance"... [P]lanetary scientist Jack Hartung of the State University of New York... gathered enough clues to suggest that a large asteroid... might have...
|
|
|
Chesapeake Bay Crater Offers Clues To Ancient Cataclysm
|
| |
Posted by blam
On News/Activism 11/16/2001 4:23:50 PM EST · 21 replies · 264+ views
Natinal Geographic | 11-13-2001 | Hillary Mayell
Chesapeake Bay Crater Offers Clues to Ancient Cataclysm Hillary Mayell for National Geographic News November 13, 2001 About 35 million years agoóthe dinosaurs are dead, but the Appalachian Mountains are still covered in tropical rain forestsóa rock from space that was more than a mile wide and moving at supersonic speed crashed into the Atlantic Ocean off North America. Traveling at about 70,000 miles (113,000 kilometers) an hour, the asteroid or comet (bolide) splashed through several hundred feet of water and several thousand feet of mud and sediment. Drilling for Knowledge A trailer hauls drilling rods the U.S. Geological Survey ...
|
|
|
Clare Places: Islands: Mutton Island or Enniskerry (9th century catastrophe in Ireland)
|
| |
Posted by SunkenCiv
On General/Chat 11/18/2005 2:58:58 PM EST · 36 replies · 397+ views
Clare County Library | prior to November 19, 2005 | staff writer
According to the "Annals of the Four Masters" the island was once called Fitha Island and it formed part of the mainland until the day "the sea swelled so high that it burst its boundaries, overflowing a large tract of country, and drowning over 1,000 persons." This happened on March 16th, 804. Some reports describe it as an earthquake, others as a tidal wave when "the sea divided the island of Fitha into three parts." These three islands are Mutton Island, Inismattle (or Illanwattle) and Roanshee (or Carrig na Ron). There is a fourth island in the area called Carraig...
|
|
|
Closest Asteroid Yet Flies Past Earth
|
| |
Posted by blam
On News/Activism 10/03/2003 11:37:27 AM EDT · 42 replies · 133+ views
New Scientist | 10-3-2003 | Jeff Hecht
Closest asteroid yet flies past Earth 18:17 02 October 03 NewScientist.com news service An asteroid about the size of a small house passed just 88,000 kilometres from the Earth by on Saturday 27 September - the closest approach of a natural object ever recorded. Geostationary communication satellites circle the Earth 42,000km from the planet's centre. The asteroid, designated 2003 SQ222, came from inside the Earth's orbit and so was only spotted after it had whizzed by. The first sighting was on Sunday 28 by the Lowell Observatory Near-Earth Object Search program in Arizona, US. Amateur astronomer Peter Birtwhistle of Great...
|
|
|
The Comet and the Future of Science
|
| |
Posted by Swordmaker
On General/Chat 03/10/2006 3:31:00 AM EST · 12 replies · 115+ views
Thunderbolts.info | Feb 27, 2006
Though NASA officials have said nothing on the subject, astronomy today is on the edge of a critical shift in perceptionóa revolution that could redefine our view of the heavens. Credit NASA Above, the 'Great Comet' of 1996, Hyakutake. The stunning discovery of X-ray emissions from the visitor was a milestone in comet science, as was the discovery that the comet's coherent and filamentary ion tail spanned more than 350 million miles. Proponents of the 'Electric Universe' say that a revolution in the sciences is inescapable, and they believe the failure of modern comet theory could be the tipping point....
|
|
|
Comet or Meteorite Impact Events in 1178AD?
|
| |
Posted by blam
On News/Activism 01/03/2005 6:59:02 PM EST · 62 replies · 2,356+ views
SIS Conference | 1-26-2003 | Emilio Spedicato
1. Introduction As related by Clube and Napier in their monograph The Cosmic Winter, see [1], in the year 1178 A.D. four wise men of Canterbury were sitting outside on a clear and calm 18th June night, a half Moon standing placidly in the starry sky. Suddenly they noticed a flame jutting out of a horn of the Moon. Then they saw the Moon tremble and its colour change slowly from light brilliant to a darker reddish tone. Such a colour remained for all the time the Moon was visible during that phase. This story is found in a manuscript...
|
|
|
Comet put on list of potential Earth impactors
|
| |
Posted by SunkenCiv
On General/Chat 06/02/2005 12:04:31 PM EDT · 42 replies · 2,033+ views
New Scientist | 1 June 2005 | David L Chandler
On 26 May, JPL's unique orbital calculation software determined that Comet Catalina was on what could possibly be a collision course with Earth, though the odds of such an impact were small: just 1 chance in 300,000 of a strike on June 11, 2085. Based on the 980-metre size estimate, that would produce a 6-gigaton impact - equivalent to 6 billion tonnes of TNT. Astronomers expected the addition of further observations to the calculations to rule out any possibility of a collision, as happens with most newly-seen objects. But that did not quite happen. The comet's predicted pathway actually drew...
|
|
|
Comets, Meteors, & Myth: New Evidence For Toppled Civilizations And Bibical Tales
|
| |
Posted by blam
On General/Chat 08/11/2002 8:32:56 PM EDT · 16 replies · 1,202+ views
Science Tuesday/Space.com | 11-13-2002 | Robert Roy Brit
Comets, Meteors & Myth: New Evidence for Toppled Civilizations and Biblical Tales By Robert Roy Britt Senior Science Writer posted: 07:00 am ET 13 November 2001 "...and the seven judges of hell ... raised their torches, lighting the land with their livid flame. A stupor of despair went up to heaven when the god of the storm turned daylight into darkness, when he smashed the land like a cup." -- An account of the Deluge from the Epic of Gilgamesh, circa 2200 B.C. If you are fortunate enough to see the storm of shooting stars predicted for the Nov. 18...
|
|
|
Cosmic Hole-in-One Captured Over Antarctica
|
| |
Posted by SunkenCiv
On General/Chat 09/06/2005 12:36:19 AM EDT · 9 replies · 396+ views
RedNova | Monday, 5 September 2005, 20:43 CDT | staff / press release
What a powerful telescope had picked up as it stretched towards the night sky over Antarctica was the trail of dust left in the wake of the death of an asteroid... "What he didn't know at the time was that seven hours earlier an asteroid had crashed to Earth in another part of Antarctica, about 1500 kms west of Davis. The closest it got to human habitation was around 900 kms west of Japan's Syowa station," Dr Klekociuk said... Dr Klekociuk said that it was thought that the asteroid had come from what is known as the Aten group somewhere...
|
|
|
Cracking the Mystery (Cretaceous, Great Dying, Chicxulub)
|
| |
Posted by SunkenCiv
On General/Chat 12/29/2005 11:32:11 AM EST · 5 replies · 179+ views
Time Magazine | May 5 1997 | Anthony Spaeth with Maseeh Rahman/Dahod
The Shiva Crater is discussed in a recent article in Memoirs of the Queensland Museum, an Australian scientific journal, by the two scientists. In the early 1990s, based on new geological evidence, Chatterjee surmised that a crater extending from the seabed off the city of Bombay into the state of Gujarat was created by a meteor fall. He named it after Shiva. He also argued that the Shiva Crater was actually one-half of a larger crater; the other part lay undersea near the Seychelle Islands, 2,800 km southeast of India. When pieced together, the original crater (split by continental shifting)...
|
|
|
The Curious Tale of Asteroid Hermes (Look up this week and watch asteroid sail by!)
|
| |
Posted by mhking
On News/Activism 11/03/2003 5:41:03 PM EST · 29 replies · 145+ views
RedNova.com | 11.3.03
For the next few days backyard astronomers can see for themselves the long lost asteroid Hermes. Science@NASA -- It's dogma now: an asteroid hit Earth 65 million years ago and wiped out the dinosaurs. But in 1980 when scientists Walter and Luis Alvarez first suggested the idea to a gathering at the American Association for Advancement of Sciences, their listeners were skeptical. Asteroids hitting Earth? Wiping out species? It seemed incredible. At that very moment, unknown to the audience, an asteroid named Hermes halfway between Mars and Jupiter was beginning a long plunge toward our planet. Six months later it...
|
|
|
The Dark Ages: Were They Darker Than We Imagined?
|
| |
Posted by blam
On News/Activism 06/09/2003 1:31:29 AM EDT · 92 replies · 2,464+ views
The Universe | 9-1999 | Greg Bryant
The Dark Ages : Were They Darker Than We Imagined? By Greg Bryant Published in the September 1999 issue of Universe As we approach the end of the Second Millennium, a review of ancient history is not what you would normally expect to read in the pages of Universe. Indeed, except for reflecting on the AD 837 apparition of Halley's Comet (when it should have been as bright as Venus and would have moved through 60 degrees of sky in one day as it passed just 0.03 AU from Earth - three times closer than Hyakutake in 1996), you may...
|
|
|
Dark Days Doomed Dinosaurs, Say Purdue Scientists
|
| |
Posted by vannrox
On News/Activism 07/07/2004 4:44:10 PM EDT · 12 replies · 830+ views
Purdue University | 2004-06-24 | news release issued by Purdue University
Dark Days Doomed Dinosaurs, Say Purdue Scientists WEST LAFAYETTE, Ind. ? Though the catastrophe that destroyed the dinosaurs' world may have begun with blazing fire, it probably ended with icy darkness, according to a Purdue University research group. By analyzing fossil records, a team of scientists including Purdue's Matthew Huber has found evidence that the Earth underwent a sudden cooling 65 million years ago that may have taken millennia to abate completely. The fossil rock samples, taken from a well-known archaeological site in Tunisia, show that tiny, cold-loving ocean organisms called dinoflagellates and benthic formanifera appeared suddenly in an ancient...
|
|
|
The day the sky fell in
|
| |
Posted by e_engineer
On News/Activism 02/24/2003 7:06:52 PM EST · 13 replies · 253+ views
Guardian | February 6, 2003 | Duncan Steel
A metallic asteroid may have coincided with the fall of Rome, says Duncan Steel Thursday February 6, 2003 The Guardian In the early fifth century, rampaging Goths swept through Italy. Inviolate for 1,100 years, Rome was sacked by the hordes in 410 AD. St Augustine's apologia, the City of God, set the tone for Christians for the next 16 centuries. But the Rome of that era came close to suffering a far worse calamity. A small metallic asteroid descended from the sky, making a hypervelocity impact in an Apennine valley just 60 miles east of the city. This bus-sized lump...
|
|
|
Did Asteroids And Comets Turn The Tides Of Civilization?
|
| |
Posted by blam
On General/Chat 07/11/2002 4:56:44 PM EDT · 81 replies · 2,971+ views
Discovering Archaeology | July/August 1999 | Mike Baillie
Did Asteroids and Comets Turn the Tides of Civilization? By Mike Baillie The heart of humanity seems at times to have lost its cadence, the rhythmic beat of history collapsing into impotent chaos. Wars raged. Pestilence spread. Famine reigned. Death came early and hard. Dynasties died, and civilization flickered. Such a time came in the sixth century A.D. The Dark Ages settled heavily over Europe. Rome had been beaten back from its empire. Art and science stagnated. Even the sun turned its back. "We marvel to see no shadows of our bodies at noon, to feel the mighty vigor of...
|
|
|
Dino impact gave Earth the chill
|
| |
Posted by TigerLikesRooster
On News/Activism 06/01/2004 4:02:01 AM EDT · 30 replies · 902+ views
BBC NEWS | 05/31/04 | N/A
Dino impact gave Earth the chill A cloud of sulphate particles may have blocked out the sun's warmth Evidence has been found for a global winter following the asteroid impact that is thought to have killed off the dinosaurs 65 million years ago. Rocks in Tunisia reveal microscopic cold-water creatures invaded a warm sea just after the space rock struck Earth. The global winter was probably caused by a pollutant cloud of sulphate particles released when the asteroid vapourised rocks at Chicxulub, Mexico. The results are reported in the latest issue of the journal Geology. Italian, US and Dutch...
|
|
|
Drilling Finds Crater Beneath Va. Bay
|
| |
Posted by Rebelbase
On News/Activism 06/01/2004 7:21:15 PM EDT · 70 replies · 719+ views
AP via Yahoo | Tue Jun 1 2004 | Staff
CAPE CHARLES, Va. - Geologists drilling half a mile below Virginia's Eastern Shore say they have uncovered more signs of a space rock's impact 35 million years ago. For more than two weeks, scientists drilled around the clock alongside a parking lot across the harbor from Cape Charles. They stopped at 2,700 feet. From the depths came jumbled, mixed bits of crystalline and melted rock that can be dated, as well as marine deposits, brine and other evidence of an ancient comet or asteroid that slammed into once-shallow waters near the Delmarva Peninsula. Cape Charles is considered Ground Zero for...
|
|
|
Earth's Volcanism Linked To Meteorite Impacts
|
| |
Posted by blam
On News/Activism 12/13/2002 11:36:39 AM EST · 31 replies · 548+ views
New Scientist | 12-13-2002 | Kate Ravilious
Earth's volcanism linked to meteorite impacts 14:31 13 December 02 Exclusive from New Scientist Print EditionSpace rocks are blamed for violent eruptions (Image: GETTY) Large meteorite impacts may not just throw up huge dust clouds but also punch right through the Earth's crust, triggering gigantic volcanic eruptions. The idea is controversial, but evidence is mounting that the Earth's geology has largely been driven by such events. This would also explain why our planet has so few impact crater remnants. Counting the number of asteroids we see in the sky suggests that over the past 250 million years, Earth should have...
|
|
|
Earthgrazers and Fireballs: The Strange Side of The Leonid Meteor Shower
|
| |
Posted by MeekOneGOP
On News/Activism 11/17/2001 6:31:38 AM EST · 68 replies · 311+ views
Space.com | November 16, 2001 | By Robert Roy Britt, Senior Science Writer, SPACE.com
Friday November 16 09:37 AM EST Earthgrazers and Fireballs: The Strange Side of The Leonid Meteor ShowerBy Robert Roy BrittSenior Science Writer, SPACE.com The Leonid meteor shower is a strange show. Its meteors are among the fastest known. It is notoriously difficult to predict. And it is a total night owl, refusing to show its best stuff until well after midnight. But while the 2001 Leonids will likely be remembered for the sheer volume of shooting stars, there are some strange characters to look for as the shower's source ekes above the eastern horizon late Saturday night and early Sunday ...
|
|
|
Earth's gravity may lure deadly asteroid
|
| |
Posted by aculeus
On News/Activism 04/18/2005 10:21:31 AM EDT · 179 replies · 3,024+ views
The Times (UK) | April 18, 2005 | By Nigel Hawkes
A HUGE asteroid which is on a course to miss the Earth by a whisker in 2029 could go round its orbit again and score a direct hit a few years later. Astronomers have calculated that the 1,000ft-wide asteroid called 2004 MN4 will pass by the Earth at a distance of between 15,000 and 25,000 miles -- about a tenth of the distance between the Earth and the Moon and close enough to be seen with the naked eye. Although they are sure that it will miss us, they are worried about the disturbance that such a close pass will...
|
|
|
The Eltanin Impact Crater
|
| |
Posted by SunkenCiv
On Bloggers & Personal 10/18/2004 12:46:13 AM EDT · 21 replies · 537+ views
Geological Society of America | October 27-30, 2002 | Christy A. Glatz, Dallas H. Abbott, and Alice A. Nunes
An impact event occurred at 2.15±0.5 Ma in the Bellingshausen Sea. It littered the oceanic floor with asteroidal debris. This debris is found within the Eltanin Impact Layer. Although the impact layer was known, the crater had yet to be discovered. We have found a possible source crater at 53.7S,90.1W under 5000 meters of water. The crater is 132±5km in diameter, much larger than the previously proposed size of 24 to 80 km.
|
|
|
Evidence for Major Impact Events in the late Third Millennium BC
|
| |
Posted by vannrox
On News/Activism 09/04/2002 7:48:54 PM EDT · 88 replies · 6,116+ views
Evidence of Astronomical Aspects of Mankind's Past and Recent Climate Homepage | FR Post 9-4-2 | Timo Niroma
The Climax of a Turbulent Millennium: Evidence for Major Impact Events in the late Third Millennium BC Timo Niroma, Helsinki, Finland The First Intermediate PeriodThe Curse of AkkadTroy IIgThird Millennium BC Climate Change and Old World CollapseNatural Catastrophes during Bronze Age Civilisations Two separate cataclysmsSodom and GomorrahWhere did the impacts occur? The First Intermediate Period Selections from "The Egyptians" by C. Aldred (London 1987). "At this distance of time, the overthrow of the Old Kingdom at the end of the Sixth Dynasty has all the appearance of being sudden and complete. "Recent research has attributed the abrupt nature of...
|
|
|
Evidence Of Tunguska-Type Impacts Over The Pacific Basin Around The Year 1178 AD
|
| |
Posted by blam
On News/Activism 01/26/2003 12:36:14 PM EST · 47 replies · 1,609+ views
SIS Conference | Emilio Spedicato
Evidence Of Tunguska-type Impacts Over The Pacific Basin Around The Year 1178 A.D. Emilio Spedicato University of Bergamo, Piazza Rosate 2, 24129 Bergamo, Italy, email: emilio@ibguniv.unibg.it In year 1178 A.D., as related by Clube and Napier in their book The Cosmic Serpent, a strange event was observed to affect the Moon, which may be explained by a large impact on the hidden face, originating the Giordano Bruno crater. A number of observations suggest that catastrophic cometary or meteoritic impacts around the same time also affected the Pacific basin: Maori legends of great fires destroying forests and the moa bird, to...
|
|
|
Geology Picture of the Week, January 2-8, 2005: Evidence of Ancient Cretaceous Catastrophe
|
| |
Posted by cogitator
On News/Activism 01/06/2005 2:40:15 PM EST · 5 replies · 1,606+ views
Rochestery Academy of Science | January 1998 | Paul Dudley
Link post: the image and the thread (to discuss it) are below: Geology Picture of the Week, January 2-8, 2005: Evidence of Ancient Cretaceous Catastrophe
|
|
|
Geology Picture of the Week, January 2-8, 2005: Evidence of Ancient Cretaceous Catastrophe
|
| |
Posted by cogitator
On General/Chat 01/06/2005 2:32:02 PM EST · 6 replies · 1,299+ views
Rochester Academy of Science | January 1998 | Paul Dudley
Considering that news is still dominated by the tsunami and its aftereffects (and aid and recovery efforts), my mind is still on that kind of topic. I recalled back during the days when the Chicxulub impact site was being identified as the main Cretaceous/Tertiary (K/T) event that the supporting evidence for the regional location was thick layers of ejecta at the K/T boundary found around the Caribbean. I checked for pictures and found a few; below is one of the best from Belize. Can you see the K/T boundary? Go to the linked article to read more about this image...
|
|
|
Geology Pictures of the Two Weeks, September 4-17, 2005: Images of the Chichen Itza Cenote
|
| |
Posted by cogitator
On General/Chat 09/14/2005 10:51:52 AM EDT · 11 replies · 457+ views
Inspiration: the "close approach" of the Japanese satellite Hayabusa to the asteroid Itokawa. Hayabusa is actually going to attempt to gather material from Itokawa using an impactor, and it will deploy a micro-robot that hops around the asteroid. Cool mission -- the samples are supposed to land in the Australian outback in 2007. Hayabusa Hovers Near Asteroid Itokawa So why the images? Well, the cenote was caused by the K/T impactor, and that's what I thought of today. According to a long-remembered National Geographic article, the Chichen Itza cenote was supposedly the site of human sacrifices; after the sacrifice was...
|
|
|
Giant asteroid rocked Antarctica
|
| |
Posted by SunkenCiv
On Bloggers & Personal 10/18/2004 12:26:51 AM EDT · 16 replies · 486+ views
Near Earth Object Information Centre | 8/20/2004 | staff
The collision happened around 870 000 years ago, a time when Homo erectus, man's early ancestor, was still roaming the planet. Molten asteroid slabs melted through more than 1.5 kilometres of ice and snow to reach the underlying bedrock... Billions of tons of ice, snow and rock would have been vaporised and thrown into the atmosphere. Rock particles that fell to the ground have been located more that 5 000 kilometres away in Australia. The impact was so immense that it is being considered as the cause of a reversal of the Earth's magnetic polarity around this time. One...
|
|
|
Giordano Bruno, the June 1975 Meteoroid Storm, Encke, and Other Taurid Complex Objects
|
| |
Posted by SunkenCiv
On General/Chat 12/27/2004 5:37:46 PM EST · 8 replies · 342+ views
Icarus (Volume 104, Issue 2 , pp 280-290) | August 1993 | Jack B. Hartung
(actual link) Corvid meteors observed only in late June of 1937 may be secondaries from the Giordano Bruno impact in June of 1178. Objects that products meteorite falls, fireballs, airwaves, and flashes on the Moon do not show a preference for late June and, therefore, are not part of the Taurid Complex.
|
|
|
Going Into The Water: A Survey Of Impact Events And The Coastal Peoples Of South-East North America
|
| |
Posted by blam
On News/Activism 01/17/2002 7:08:32 PM EST · 53 replies · 3,618+ views
Cambridge Conference Network | 1-09-2002
Very long but good anthropology/archaeology article Click Here
|
|
|
Google Map Mystery (Satellite imaging catches a UFO over Magnolia Gardens, Fla.)
|
| |
Posted by Las Vegas Dave
On General/Chat 05/21/2005 2:38:21 AM EDT · 79 replies · 2,088+ views
unknowncountry.com | 18May2005
< snip >....Satellite map of Magnolia Park, Florida shows a clear view of an unusual object floating above 39th Street in the town. The shadow on the object is similar to the shadows on the ground, meaning that it is in the atmosphere relatively close to the surface, probably no higher than 20,000 feet. There are no towers or unusual objects in the area that could account for the formation, which appears to be in rapid vibrational movement. Because of the unusual motion visible on its surface, it is not likely that this is a balloon. Without knowing its distance...
|
|
|
Grains Found in Ga. Traced to Asteroid
|
| |
Posted by SunkenCiv
On General/Chat 08/24/2004 2:32:23 PM EDT · 8 replies · 323+ views
Yahoo / AP | August 24 2004 | editors
Microscopic analysis, reported in the current issue of the journal Geology, revealed a 3-inch-thick layer of "shocked quartz" -- a form of the mineral produced only under intense pressure like that of an impact -- that dated to 35.5 million years ago, when a space rock slammed into the Earth about 120 miles southeast of present-day Washington.
|
|
|
The Hazard of Near-Earth Asteroid Impacts on Earth
|
| |
Posted by SunkenCiv
On General/Chat 12/02/2004 1:51:16 PM EST · 18 replies · 414+ views
Frontiers | 4 March 2004 | Clark R. Chapman
The actual damage that a NEA impact might cause on Earth was concretely described by Baldwin, a leading advocate for the impact origin of lunar craters. Later, Opik... proposed that NEA impacts might account for mass extinctions in the Earth's paleontological record. Around the same time, Shoemaker firmly established the impact origin of Meteor Crater in Arizona... [I]t was not only a cultural but a scientific shock when Mariner 4's first photographs of the Martian surface revealed it to be covered by craters; a decade later, Mariner 10 found the same on Mercury... In 1979 and 1980, the Voyagers first...
|
|
|
Headless Comets Survive Plunge Through Sun's Atmosphere
|
| |
Posted by blam
On News/Activism 06/18/2003 1:00:38 PM EDT · 25 replies · 104+ views
Science Daily | 6-18-2003 | NASA
Source: NASA/Goddard Space Flight Center Date: 2003-06-18 Headless Comets Survive Plunge Through Sun's Atmosphere A run through the jungle is too easy; for the ultimate reality show contest, try a race through the Sun's atmosphere, where two comets recently lost their heads. The tails from a pair of comets survived a close encounter with the Sun, even after the Sun's intense heat and radiation vaporized their heads (nuclei and coma), an extremely rare event photographed by the Solar and Heliospheric Observatory (SOHO) spacecraft. On May 24, 2003, a pair of comets arced in tandem towards the Sun, their paths taking...
|
|
|
Huge Crater Found in Egypt - Kebira
|
| |
Posted by NormsRevenge
On News/Activism 03/03/2006 11:58:45 PM EST · 65 replies · 2,230+ views
Space.com | 3/3/06 | Robert Roy Britt
Scientists have discovered a huge crater in the Saharan desert, the largest one ever found there. The crater is about 19 miles (31 kilometers) wide, more than twice as big as the next largest Saharan crater known. It utterly dwarfs Meteor Crater in Arizona, which is about three-fourths of a mile (1.2 kilometers) in diameter. In fact, the newfound crater, in Egypt, was likely carved by a space rock that was itself roughly 0.75 miles wide in an event that would have been quite a shock, destroying everything for hundreds of miles. For comparison, the Chicxulub crater left by a...
|
|
|
An Impact Event in 3114BC? The beginning of a Turbulent Millennium.
|
| |
Posted by ckilmer
On News/Activism 01/03/2003 11:06:06 PM EST · 42 replies · 1,231+ views
personal.eunet.fi
An Impact Event in 3114BC? The Beginning of a Turbulent Millennium. Recurring Phenomenon: The Cosmic DisasterThe Mayan CalendarStonehengeA Possible Source for the 3100 BC Event Collected and commented by Timo Niroma, Helsinki, Finland Go to the Evidence of Astronomical Aspects of Mankind's Past and Recent Climate Homepage Recurring Phenomenon: The Cosmic Disaster Besides the most evident cosmic catastrophes ca. 2200 BC and 2345 BC there are other events during the Holocene that are so widely global and difficult to explain by only the Earth's own mechanisms that a cosmic explanation must evidently be taken into account. The first so-called...
|
|
|
Iron meteorites may be solar system boomerangs
|
| |
Posted by SunkenCiv
On General/Chat 02/17/2006 12:06:57 PM EST · 7 replies · 92+ views
New Scientist | 17 February 2006 | Maggie McKee
Iron meteorites thought to have originated in the asteroid belt beyond Mars may actually have formed near Earth, a new study reports... Iron meteorites are made up of iron and nickel alloys and comprise about 6% of all catalogued space rocks on Earth... Studies show that the known iron meteorites come from about 80 different parent asteroids, while the thousands of known stony meteorites broke off from just 40 or so parent bodies. That suggests astronomers should see many "differentiated" asteroids in the asteroid belt today, says William Bottke of the Southwest Research Institute in Boulder, Colorado, US. But observations...
|
|
|
It Came from Outer Space?
|
| |
Posted by SunkenCiv
On General/Chat 11/25/2004 8:13:07 PM EST · 11 replies · 545+ views
American Scientist | November-December 2004 | David Schneider
Speranza points out another difficulty with the impact-origins theory. Large blocks of limestone sit within the boundaries of the Sirente "crater." Such limestone would not have survived an impact. So if Ormˆ's theory is correct, one must surmise that somebody set these giant chunks of rock in place since the crater formed. To Speranza, that just didn't make sense. Speranza and colleagues further argue that Ormˆ's radiocarbon dating gave one age for the main feature (placing it in the 4th or 5th century a.d.) and a completely different age for a nearby "crater" called C9, a date in the 3rd...
|
|
|
Mass Extinctions - A Threat From Outer Space Or Our Own Planet's Detox?
|
| |
Posted by blam
On News/Activism 03/09/2006 2:57:34 PM EST · 21 replies · 625+ views
University Of Leicester | 3-9-2006 | Andy Sanders
Mass Extinctions - A Threat from Outer Space or Our Own Planet's Detox? University scientists suggest extraterrestrial theories are flawed and that more down to earth factors could have accounted for past mass extinctions Earth history has been punctuated by several mass extinctions rapidly wiping out nearly all life forms on our planet. What causes these catastrophic events? Are they really due to meteorite impacts? Current research suggests that the cause may come from within our own planet -- the eruption of vast amounts of lava that brings a cocktail of gases from deep inside the Earth and vents them...
|
|
|
Mass-extinction controversy flares again (Chicxulub crater kills dinosaurs, or not?)
|
| |
Posted by SteveH
On News/Activism 04/11/2003 5:34:46 PM EDT · 28 replies · 295+ views
Nature | 10 April 2003 | Rex Dalton
EGS-AGU-EUG Joint Assembly, Nice, April 2003 Mass-extinction controversy flares again Core from asteroid crater fuels debate on what wiped out the dinosaurs. 10 April 2003 REX DALTON [photo] The dinosaurs were wiped out 65 million years ago. © alamy.com A claim that the asteroid that struck Mexico 65 million years ago did not cause the mass extinction that wiped out dinosaurs triggered heated debate at a meeting this week. The announcement is based on preliminary analysis of the first core drilled into the 185-kilometre Chicxulub asteroid crater near the Yucatan Peninsula. Gerta Keller of Princeton University in New Jersey says...
|
|
|
Meteor Clue To End Of Middle East Civilisations
|
| |
Posted by blam
On News/Activism 01/04/2002 1:50:09 AM EST · 73 replies · 3,585+ views
The Telegraph (UK) | 11-04-2001 | Robert Matthews
Meteor clue to end of Middle East civilisations By Robert Matthews, Science Correspondent (Filed: 04/11/2001) SCIENTISTS have found the first evidence that a devastating meteor impact in the Middle East might have triggered the mysterious collapse of civilisations more than 4,000 years ago. satellite images of southern Iraq have revealed a two-mile-wide impact crater caused by a meteor Studies of satellite images of southern Iraq have revealed a two-mile-wide circular depression which scientists say bears all the hallmarks of an impact crater. If confirmed, it would point to the Middle East being struck by a meteor with the violence equivalent ...
|
|
|
Meteor Clue To End Of Middle East Civilisations
|
| |
Posted by blam
On News/Activism 06/08/2003 10:17:12 PM EDT · 69 replies · 595+ views
The Telegraph (UK) | 4-11-2001 | Robert Matthews
Meteor clue to end of Middle East civilisations By Robert Matthews, Science Correspondent (Filed: 04/11/2001) SCIENTISTS have found the first evidence that a devastating meteor impact in the Middle East might have triggered the mysterious collapse of civilisations more than 4,000 years ago. satellite images of southern Iraq have revealed a two-mile-wide impact crater caused by a meteor Studies of satellite images of southern Iraq have revealed a two-mile-wide circular depression which scientists say bears all the hallmarks of an impact crater. If confirmed, it would point to the Middle East being struck by a meteor with the violence equivalent...
|
|
|
Meteor shards linked to massive extinction
|
| |
Posted by balrog666
On News/Activism 11/21/2003 3:16:33 PM EST · 113 replies · 517+ views
International Herald Tribune | 21 November 2003 | Kenneth Chang
Fragments may be 250 million years old About three dozen microscopic shards of rock unearthed in Antarctica may be the fragments of a meteor that killed most of life on earth 250 million years ago, scientists reported Friday. . The shards bolster theories that meteors caused several of the mass extinctions in earth's history when large numbers of species died out almost simultaneously. Most scientists agree that the most recent major mass extinction 65 million years ago, which killed off the dinosaurs, was caused when a meteor struck the earth near the Yucat·n Peninsula of Mexico. . The extinction 250...
|
|
|
'Meteorite' Hits Girl
|
| |
Posted by blam
On News/Activism 08/27/2002 2:50:09 PM EDT · 96 replies · 461+ views
BBC | 8-27-2002
Tuesday, 27 August, 2002, 12:27 GMT 13:27 UK 'Meteorite' hits girl Siobhan Cowton: "I saw it fall from above roof height" The odds against being hit by a meteorite are billions to one - but a teenager in North Yorkshire may have had one land on her foot. Siobhan Cowton, 14, was getting into the family car outside her Northallerton home at 1030 BST on Thursday when a stone fell on her from the sky. This does not happen very often in Northallerton Siobhan Cowton Noticing it was "quite hot", she showed it to her father Niel. The family now...
|
|
|
Moon over Chicxulub: Will Night Finally Fall on the Dinosaur-Extinction Debate?
|
| |
Posted by SunkenCiv
On General/Chat 09/22/2005 1:32:02 AM EDT · 6 replies · 306+ views
American Scientist | November-December 1998 | Kirk Johnson
In the final section of the book, Powell takes his thesis beyond the comfort zone of many scientists, even some of the supporters of the K-T impact, and argues that impact was a factor at not only the K-T boundary but in many, perhaps most, of the other mass extinctions. To do this he relies on the periodic extinctions in the marine fossil record documented by Jack Sepkoski, the growing number of documented terrestrial impact sites and David Raup's provocative kill curve, which shows the average time between extinctions of different magnitude. Powell is certainly not the first to make...
|
|
|
Moon's Youngest Crater Discovered
|
| |
Posted by blam
On News/Activism 12/19/2002 10:42:01 PM EST · 12 replies · 238+ views
BBC | 12-20-2002
Friday, 20 December, 2002, 01:57 GMT Moon's youngest crater discovered Is this the youngest crater on the Moon? By Dr David Whitehouse BBC News Online science editor Astronomers have discovered the only known lunar crater to have been formed in recorded history. In 1953 a flash was seen on the Moon that was taken to be the impact of a small asteroid. But ground-based telescopes were not powerful enough to see any crater. But now, searching more detailed images of the Moon obtained by orbiting spacecraft, researchers have found a small, fresh, crater in the same position as the flash....
|
|
|
Mystery object lights up Northwest sky
|
| |
Posted by Mr.Atos
On News/Activism 03/13/2005 12:33:14 AM EST · 135 replies · 6,590+ views
FOX 12 OREGON | 03.12.05 | NA
PORTLAND - A flaming object was spotted streaking through the Saturday night sky across Western Oregon and the impact was heard all the way from Salem to Medford, according to various reports. Newspapers across the western half of the state and KPTV were getting phone calls from people who saw the object. Summer Jensen of Portland said she was sitting in her living room with her father when they saw the flash of light outside and rushed to see what it was. "I've never seen anything like that," Jensen said, adding that the object appeared to be moving slowly compared...
|
|
|
NASA Solves Moon Mystery (+Geology Picture of the Week, February 16-22, 2003)
|
| |
Posted by cogitator
On News/Activism 02/21/2003 4:47:27 PM EST · 38 replies · 331+ views
February 20, 2003 | Jet Propulsion Laboratory
Clementine image of the moon showing the fresh crater believed to be the impact site for the event photographed on November 15, 1953 by amateur astronomer Dr. Leon Stuart. Full press release: NASA Solves Half-Century Old Moon Mystery (click link for additional pictures, including the "Stuart Event" picture of the Moon) In the early morning hours of Nov. 15, 1953, an amateur astronomer in Oklahoma photographed what he believed to be a massive, white-hot fireball of vaporized rock rising from the center of the Moon's face. If his theory was right, Dr. Leon Stuart would be the first and only...
|
|
|
New Theory: Catastrophe Created Mars' Moons
|
| |
Posted by RightWhale
On News/Activism 07/29/2003 11:56:47 AM EDT · 57 replies · 535+ views
space.com | 29 Jul 03 | Leonard David
New Theory: Catastrophe Created Mars' Moons By Leonard David Senior Space Writer posted: 07:00 am ET 29 July 2003 PASADENA, California -- The two moons of Mars -- Phobos and Deimos -- could be the byproducts of a breakup of a huge moon that once circled the red planet, according to a new theory. The capture of a large Martian satellite may have taken place during or shortly after the formation of the planet, with Phobos and Deimos now the surviving remnants. Origin of the two moons presents a longstanding puzzle to which one researcher proposed the new solution at...
|
|
|
Northern Crater Shows Prehistoric Deep Impact
|
| |
Posted by SunkenCiv
On General/Chat 08/28/2004 2:49:33 PM EDT · 5 replies · 285+ views
Alaska Science Forum | July 7, 1998 | Ned Rozell
To the rhinos and crocodiles of the far north, the day was like any other. They ate, swam and napped, unaware a celestial body was headed their way at 60,000 miles per hour. Suddenly, a wayward comet screamed into the atmosphere, struck Earth and created a bowl a mile deep and 15 miles in diameter.
|
|
|
Northern sea baffles archaeologists
|
| |
Posted by vannrox
On News/Activism 03/24/2004 8:37:29 PM EST · 19 replies · 386+ views
Pravda | 03/11/2004 12:50 | Grigory Donskov
Remains of an ancient civilization discovered in the depths of the Northern sea While some scientists spend all their time and efforts in search of Atlantis, others have already discovered remains of an ancient civilization that had existed on the same territory as present-day Northern sea. With the help of modern technology, archaeologists were able to get a better glimpse of the ancient world. Approximately 10 000 years ago the entire bottom of the Northern sea had been a blossoming valley, inhabited by ancestors of modern-day Europeans. Scientists from the Birmingham University were able to reach such conclusion after reconstructing...
|
|
|
ODD ASTEROID
|
| |
Posted by green team 1999
On News/Activism 04/15/2003 5:06:02 PM EDT · 39 replies · 221+ views
spaceweather.com | april-15-2003 | spaceweather.com
ODD ASTEROID: On April 7th, astronomers discovered a near-Earth asteroid following a curious path around the Sun. The orbit of 2003 GQ22 is nestled almost entirely inside Earth's own. "2003 GQ22 is nearly a member of the elusive inner-Earth object group, for which there is thought to be several members, but only one discovered to date (2003 CP20)," says Donald Yeomans, the manager of JPL's Near Earth Object Program. Inner-Earth asteroids start out like most space rocks--orbiting the Sun in the asteroid belt beyond Mars. But over the course of time, perhaps hundreds of millions of years or longer, they...
|
|
|
The Peekskill Fireball (October 9, 1992)
|
| |
Posted by SunkenCiv
On General/Chat 10/03/2004 11:46:42 PM EDT · 7 replies · 518+ views
High Energy Astrophysics Science Archive Research Center | since 1992 | StarChild
This photograph was taken by S. Eichmiller in Altoona, Pennsylvania just after the main meteoroid body broke up into fragments. The events surrounding the fall of the Peekskill meteorite on October 9, 1992 were quite unique. It was observed by many people who were attending a football game, being photographed and videotaped by over a dozen people. The meteorite was found crashed into the trunk of a parked car.
|
|
|
Police On Meteor Alert After Huge Balls Of Fire Light Up Spanish Sky
|
| |
Posted by blam
On News/Activism 01/05/2004 9:45:55 PM EST · 7 replies · 141+ views
The Guardian (UK) | 1-6-2004 | Giles Tremlett
Police on meteor alert after huge balls of fire light up Spanish sky Giles Tremlett in Madrid Tuesday January 6, 2004 The Guardian (UK) Was it a brightly shining star leading the present-laden three kings to the homes of millions of children at today's Epiphany, Spain's biggest gift-giving day of Christmas? As police scoured a remote mountainous district of the northern LeÛn province yesterday for remnants of a large, brilliant, burning object that fell to earth on Sunday, the most likely explanation was that it was part of a meteor. The search concentrated near Renedo de Valderaduey after neighbours saw...
|
|
|
Precise Distance to Doomsday (today was the closest encounter from 1353 to 2562)
|
| |
Posted by Truth666
On General/Chat 09/29/2004 6:47:36 PM EDT · 13 replies · 755+ views
Summary (Sep 29, 2004): Today's close passage of the relatively large asteroid, Toutatis, has presented astronomers with a new ruler to measure solar system distances. By using two telescopes separated by hundreds of miles, the classic parallax method validates the asteroid's orbital path. Precise Distance to Doomsdaybased on ESO report The painting titled "K/T Hit" by artist Donald E. Davis. This impact occured 65 million years ago, ending the reign of the dinosaurs.Image Credit: Don Davis Today, September 29, 2004, is undisputedly the Day of Toutatis, the famous "doomsday" asteroid. Not since the year 1353 did this impressive "space rock"...
|
|
|
Radar Reveals Five Double Asteroid Systems Orbiting Each Other Near Earth
|
| |
Posted by blam
On General/Chat 04/12/2002 9:24:24 AM EDT · 15 replies · 149+ views
Science Daily | 4-12-2002 | Cornell
Date: Posted 4/12/2002 Radar Reveals Five Double Asteroid Systems Orbiting Each Other Near Earth, Likely Formed In Close Encounters With Planet ITHACA, N.Y. -- Binary asteroids -- two rocky objects orbiting about one another -- appear to be common in Earth-crossing orbits, astronomers using the world's two most powerful astronomical radar telescopes report. And it is probable, they say, that these double asteroid systems have been formed as a result of gravitational effects during close encounters with at least two of the inner planets, including Earth. Writing in a report published by the journalScience on its Science Express web site...
|
|
|
Recently Discovered Near-Earth Asteroid Makes Record-breaking Approach to Earth
|
| |
Posted by BenLurkin
On General/Chat 03/18/2004 1:05:44 AM EST · 15 replies · 478+ views
NASA's Near Earth Object Program Office | Wednesday, March 17, 2004 | Steven R. Chesley
A small near-Earth asteroid (NEA), discovered Monday night by the NASA-funded LINEAR asteroid survey, will make the closest approach to Earth ever recorded. There is no danger of a collision with the Earth during this encounter. The object, designated 2004 FH, is roughly 30 meters (100 feet) in diameter and will pass just 43,000 km (26,500 miles, or about 3.4 Earth diameters) above the Earth's surface on March 18th at 5:08 PM EST (2:08 PM PST, 22:08 UTC). (Close approach details here). On average, objects about the size of 2004 FH pass within this distance roughly once every two years,...
|
|
|
Roman Comet 5,000 Times More Powerful Than A-Bomb
|
| |
Posted by freedom44
On News/Activism 10/17/2004 6:36:42 PM EDT · 52 replies · 1,831+ views
Scotsman | 10/17/04 | John von Radowitz
People living in southern Germany during Roman times may have witnessed a comet impact 5,000 times more destructive than the Hiroshima atom bomb, researchers say. Scientists believe a field of craters around Lake Chiemsee, in south-east Bavaria, was caused by fragments of a huge comet that broke up in the Earth's atmosphere. Celtic artefacts found at the site, including a number of coins, appear to have been strongly heated on one side. This discovery, together with evidence from ancient tree rings and Roman reports of 'stones falling from the sky', has led researchers to conclude that the impact happened in...
|
|
|
Satellite Photo: What is this?
|
| |
Posted by demlosers
On General/Chat 05/17/2005 1:16:11 PM EDT · 41 replies · 892+ views
Google Maps FL 33409 | 17 May 2005 | Digital Globe, EarthSat
Click here to see: http://maps.google.com
|
|
|
Scientist: Asteroid May Hit Earth in 2029
|
| |
Posted by hole_n_one
On News/Activism 12/23/2004 11:24:16 PM EST · 301 replies · 5,832+ views
Yahoo/AP | 12/23/04 | JOHN ANTCZAK
Scientist: Asteroid May Hit Earth in 2029 Thu Dec 23, 5:40 PM ET By JOHN ANTCZAK, Associated Press Writer LOS ANGELES - There's a 1-in-300 chance that a recently discovered asteroid, believed to be about 1,300 feet long, could hit Earth in 2029, a NASA (news - web sites) scientist said Thursday, but he added that the perceived risk probably will be eliminated once astronomers get more detail about its orbit. -- There have been only a limited number of sightings of Asteroid 2004 MN4, which has been given an initial rating of 2 on the 10-point Torino Impact Hazard...
|
|
|
Scientists Probe Asteroid Crash
|
| |
Posted by Our_Man_In_Gough_Island
On News/Activism 08/26/2005 10:00:38 AM EDT · 31 replies · 742+ views
Brisbane Courier Mail | 25 August 2005 | Robyn Grace
AN asteroid the size of a house that exploded with the power of an atom bomb over Antarctica last year may help scientists prepare for the entrance of larger bodies into the Earth's atmosphere. The 1000-tonne asteroid crashed to Earth in millions of pieces last September, 900km from the nearest humans at Japan's Syowa station. A trail of dust recorded by a physicist 1500km away at Australia's Davis station shows that if the asteroid had not fragmented into tiny pieces when it hit the Earth's atmosphere, it would have had an impact similar to the bombing of Hiroshima. Dr Andrew...
|
|
|
Scientists Uncover 'Deep Impact' Disaster From Space
|
| |
Posted by blam
On News/Activism 06/13/2003 9:10:30 PM EDT · 34 replies · 293+ views
Ananova | 6-12-2003
Scientists uncover 'deep impact' disaster from spaceA new report suggests that a massive object from space smashed into what is now the Moroccan desert 380 million years ago, wiping out 40% of the world's marine species. The discovery adds to the evidence linking such impacts with mass extinction events. Only one other impact by a large comet or asteroid has convincingly been held responsible for a mass extinction. That occurred off the Yucatan peninsular in Mexico 65 million years ago and is thought to have ended the reign of the dinosaurs. The newly discovered impact coincided with the Kacak/otomari extinction,...
|
|
|
The Search for the Missing Amazon Meteor
|
| |
Posted by SteveH
On News/Activism 09/27/2002 4:53:55 AM EDT · 45 replies · 217+ views
space.com | 9/25/2002 | diana jong
The Search for the Missing Amazon Meteor Wed Sep 25, 9:27 AM ET By Diana Jong Staff Writer, SPACE.com The Araona people wanted $1 million before they would let the NASA ( news - web sites) scientists pass through their territory in the remote Bolivian Amazon. Given a budget of $20,000 for their entire expedition, the scientists resorted to negotiating, and the indigenous people eventually agreed to a payment of $500, plus 500 rounds of .22 ammunition and 200 D-cell batteries. "They couldn't be Eveready; they had to be Rayovac," recalls Compton Tucker, an earth scientist from NASA's Goddard Space...
|
|
|
SIBERIA METEORITE FLATTENS 40 SQ MILES
|
| |
Posted by Mike Darancette
On News/Activism 06/09/2003 8:25:21 PM EDT · 69 replies · 650+ views
The Times | 7 June 2003 | Robin Shepherd
IF IT had hit Central London, Britain would no longer have a capital city. The force of the meteorite that hit eastern Siberia last September destroyed 40 square miles of forest and caused earth tremors felt 60 miles away. An expedition from Russia's Kosmopoisk institute has only recently reached the site in a remote area north of Lake Baikal because of bad weather and difficult terrain, the Interfax news agency said yesterday. Fragments of the meteorite had apparently exploded into shrapnel 18 miles above the Earth with the force of at least 200 tonnes of TNT. At the time, Russian...
|
|
|
Small Asteroid Passes Between Satellites and Earth
|
| |
Posted by SunkenCiv
On General/Chat 12/23/2004 10:36:30 AM EST · 9 replies · 267+ views
Space dot com | 22 December 2004 | Robert Roy Britt
The object, named 2004 YD5, was about 16 feet (5 meters) wide, though that's a rough estimate based on its distance and assumed reflectivity. Had it entered the atmosphere, it would have exploded high up, experts figure. The asteroid passed just under the orbits of geostationary satellites, which at 22,300 miles (36,000 kilometers) altitude are the highest manmade objects circling Earth. Most other satellites, along with the International Space Station, circle the planet at just a few hundred miles up... the second closest pass of an asteroid ever observed by telescope, according to the Asteroid/Comet Connection, a web site that...
|
|
|
Small Comets and Our Origins
|
| |
Posted by SunkenCiv
On Bloggers & Personal 10/20/2004 2:13:25 AM EDT · 54 replies · 662+ views
University of Iowa | circa 1999 | Louis A. Frank
Given the reality of the dark spots, which soon became known as "atmospheric holes" because of their appearance in the images, there is only one explanation which has endured over all these years to present. That is, the holes are due to the shadowing of the atmospheric light by an object above the atmosphere. This object simply cannot be a stony or iron meteor because the holes are very large, tens of miles in diameter. A rock of this size would provide a disastrous impact on the Earth's surface. As it turns out, water vapor is very good at absorbing...
|
|
|
Space rock 'on collision course'
|
| |
Posted by In Search of Freedom
On News/Activism 07/24/2002 9:22:08 AM EDT · 20 replies · 218+ views
BBC News | 24 July, 2002 | By Dr David Whitehouse
Wednesday, 24 July, 2002, 02:29 GMT 03:29 UK Space rock 'on collision course' -- An asteroid could devastate Earth -- By Dr David Whitehouse BBC News Online science editor An asteroid discovered just weeks ago has become the most threatening object yet detected in space. A preliminary orbit suggests that 2002 NT7 is on an impact course with Earth and could strike the planet on 1 February, 2019 - although the uncertainties are large. Astronomers have given the object a rating on the so-called Palermo technical scale of threat of 0.06, making NT7 the first object to...
|
|
|
Space Rock To Hurtle Past Earth
|
| |
Posted by blam
On News/Activism 01/06/2002 10:20:43 PM EST · 58 replies · 239+ views
BBC | 01-07-2002
Monday, 7 January, 2002, 02:24 GMT Space rock to hurtle past Earth Multiple images of Asteroid 2001 YB5 show rapid motion By BBC News Online science editor Dr David Whitehouse An asteroid discovered just a month ago is making a close approach to the Earth. Although there is no danger of collision with it, astronomers say that its proximity reminds us just how many objects there are in space that could strike our planet with devastating consequences. It will pass less than twice the Moon's distance from us as the rocky body moves closer to the Sun. It is thought ...
|
|
|
What Caused Argentina's Craters?
|
| |
Posted by blam
On General/Chat 05/09/2002 6:17:12 PM EDT · 19 replies · 540+ views
National Geographic | 5-9-2002 | Ben Harder
What Caused Argentina's Mystery Craters? By Ben Harder for National Geographic News May 9, 2002 For more than a decade, planetary scientists have been puzzling over a mixed bag of meteorite evidence scarring Argentina's plains. They gradually pieced together clues to reconstruct what seemed to be a rough-hewn but generally accurate account of a prehistoric meteorite impact. A mere 10,000 years ago, scientists deduced in the original theory, a sizable meteorite came hurtling through the atmosphere at a bizarrely low angle, smacked the ground with a glancing blow, and broke into numerous pieces that gouged separate, miles-long scars in the...
|
|