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Keyword: asteroid

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  • Red Planet Impact: Huge Moons May Have Crashed Into Mars

    07/04/2016 6:40:49 PM PDT · by BenLurkin · 11 replies
    Space.com ^ | July 4, 2016 11:01am ET | Charles Q. Choi
    Phobos and Deimos are both small for moons ó about 14 and 7.7 miles (22.5 and 12.4 kilometers) wide, respectively ó and sort of potato-shaped. Compared to other satellites in the solar system, they look more like asteroids. As a result, astronomers previously hypothesized that these moons were asteroids captured by Mars' gravitational pull. ...previous research suggested that Phobos and Deimos would have relatively irregular orbits. In reality, these moons have nearly circular orbits positioned near the Martian equator. ... huge impact that previous research suggested created the gigantic Borealis basin in the northern lowlands of Mars, which covers two-fifths...
  • Monster volcano gave Mars extreme makeover: study

    03/03/2016 11:08:06 AM PST · by BenLurkin · 17 replies
    phys.org ^ | March 2, 2016 by | Laurence Coustal, Marlowe Hood
    A volcano on Mars half the size of France spewed so much lava 3.5 billion years ago that the weight displaced the Red Planet's outer layers, according to a study released Wednesday. Mars' original north and south poles, in other words, are no longer where they once were. The findings explain the unexpected location of dry river beds and underground reservoirs of water ice, as well as other Martian mysteries that have long perplexed scientists, the lead researcher told AFP. "If a similar shift happened on Earth, Paris would be in the Polar Circle," said Sylvain Bouley, a geomorphologist at...
  • Red Planet's Ancient Equator Located

    04/24/2005 8:18:25 PM PDT · by SunkenCiv · 64 replies · 2,163+ views
    Scientific American (online) ^ | April 20, 2005 | Sarah Graham
    Jafar Arkani-Hamed of McGill University discovered that five impact basins--dubbed Argyre, Hellas, Isidis, Thaumasia and Utopia--form an arclike pattern on the Martian surface. Three of the basins are well-preserved and remain visible today. The locations of the other two, in contrast, were inferred from measurements of anomalies in the planet's gravitational field... a single source--most likely an asteroid that was initially circling the sun in the same plane as Mars--created all five craters. At one point the asteroid passed close to the Red Planet... and was broken apart by the force of the planet's gravity. The resulting five pieces subsequently...
  • New Theory: Catastrophe Created Mars' Moons

    07/29/2003 8:56:47 AM PDT · by RightWhale · 62 replies · 1,837+ 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 Ė The two moons of Mars Ė Phobos and Deimos Ė 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...
  • Long-Destroyed Fifth Planet May Have Caused Lunar Cataclysm, Researchers Say

    03/25/2002 2:42:10 PM PST · by vannrox · 154 replies · 4,757+ views
    SPACE dot COM ^ | 18 March 2002 ,posted: 03:00 pm ET | By Leonard David, Senior Space Writer
    Asteroid Vesta: The 10th Planet? Discovery Brightens Odds of Finding Another Pluto Nemesis: The Million Dollar Question HOUSTON, TEXAS -- Our solar system may have had a fifth terrestrial planet, one that was swallowed up by the Sun. But before it was destroyed, the now missing-in-action world made a mess of things. Space scientists John Chambers and Jack Lissauer of NASA's Ames Research Center hypothesize that along with Mercury, Venus, Earth, and Mars -- the terrestrial, rocky planets -- there was a fifth terrestrial world, likely just outside of Mars's orbit and before the inner asteroid belt. Moreover, Planet V...
  • The asteroid that killed the dinosaurs almost got us, too

    06/29/2016 10:26:05 PM PDT · by Utilizer · 30 replies
    THE WEEK ^ | June 28, 2016 | Joshua A. Krisch
    The age of the dinosaurs ended 66 million years ago, when an asteroid six miles in diameter crashed into what is now southeastern Mexico. The world went up in flames. Dinosaurs, along with the massive reptiles that ruled the sea and the sky, perished as forest fires raged across the globe, dust blotted out the sun, and Earth experienced intense heat, frigid cooling, and then more heat. Conventional wisdom states that mammalian diversity emerged from the ashes of the mass extinction, ultimately giving rise to our own humble species. But according to a study in the Journal of Evolutionary Biology,...
  • Earth's other 'moon' and its crazy orbit could reveal mysteries of the solar system

    02/26/2015 6:29:41 AM PST · by Red Badger · 47 replies
    Phys.Org ^ | 02-25-2015 | by Duncan Forgan
    We all know and love the moon. We're so assured that we only have one that we don't even give it a specific name. It is the brightest object in the night sky, and amateur astronomers take great delight in mapping its craters and seas. To date, it is the only other heavenly body with human footprints. What you might not know is that the moon is not the Earth's only natural satellite. As recently as 1997, we discovered that another body, 3753 Cruithne, is what's called a quasi-orbital satellite of Earth. This simply means that Cruithne doesn't loop around...
  • Hunting for ďMinimoonsĒ Orbiting Earth

    09/02/2014 11:37:46 AM PDT · by BenLurkin · 3 replies
    universetoday.com ^ | September 2, 2014 | David Dickinson on
    solar orbit from time to time. Now, a recent paper out of the University of Hawaii written in partnership with the SETI Institute and the Department of Physics at the University of Helsinki has looked at the possible prospects for the population of captured Near-Earth asteroids, and the feasibility of detecting these with existing and future systems about to come online. ... Turns out, our large Moon makes a pretty good goaltender, ejecting óand sometimes taking a beating from ó any tiny second moon hopeful. Of course, you canít blame those astronomers of yore entirely. Though none of these spurious...
  • Asteroid may have killed dinosaurs quicker than scientists thought

    02/10/2013 5:50:15 PM PST · by SunkenCiv · 28 replies
    Reuters via Ya-hoooo! ^ | Friday, February 8, 2013 | Irene Klotz
    "The previous data that we had ... actually said that they (the tektites and the ash) were different in age, that they differed by about 180,000 years and that the extinction happened before the impact, which would totally preclude there being a causal relationship," said Renne, who studies ties between mass extinctions and volcanism. He and colleagues were comparing a new technique to date geologic events when they realized there was a discrepancy in the timing -- the so-called 'K-T boundary' -- the geological span of time between the Cretaceous and Paleocene periods when the dinosaurs and most other life...
  • Mystery Mini Moons: How Many Does Earth Have?

    02/10/2013 2:09:02 PM PST · by BenLurkin · 31 replies
    discovery ^ | Feb 7, 2013 11:50 AM ET | // by Irene Klotz
    Earth's gravity may not have the gravitas of Jupiter, but the planet regularly plucks small asteroids passing by and pins them into orbit. The mini-moons don't stay for long. Within a year or so they resume their looping, twisting paths like crazy straws around the sun. But others arrive to take their place. Simulations show that two asteroids the size of dishwashers and a dozen half-meter (1.6 feet) in diameter are orbiting Earth at any given time. Every 50 years or so something the size of a dump truck arrives. So far, there's been just one confirmed sighting. ... A...
  • Earth's "Other Moon"

    04/17/2007 4:41:52 PM PDT · by Lonesome in Massachussets · 42 replies · 1,824+ views
    Sky & Telescope ^ | April 17, 2007 | Roger W. Sinnott
    Last September, when a tiny asteroid drifted into Earthís vicinity, our planetís gravity captured it. The meter-size object, designated 6R10DB9, is now making its third wide swing around Earth. It was quite faint, magnitude 19.3, when discovered September 14th with the 0.68-meter (27-inch) Schmidt telescope of the Catalina Sky Survey in Arizona, and it wonít get much brighter than that. ďCertainly 6R10DB9, with a geocentric eccentricity less than 1, is currently orbiting the Earth ,Ē says Gareth V. Williams of the Minor Planet Center, ďalthough it will leave the Earth-Moon system after next Juneís perigee.Ē Williamsís calculations show that prior...
  • Cat-and-mouse asteroid nears Earth

    01/03/2003 11:25:34 AM PST · by Dog Gone · 37 replies · 1+ views
    Reuters ^ | January 3, 2003
    <p>An asteroid playing a cat-and-mouse game with Earth will pull to its closest point in almost a century on Monday before swinging away for another 95 years, NASA said in a statement.</p> <p>Asteroid 2002 AA29 is like a mouse teasing a cat, approaching Earth first on one side and then on another, without ever making contact or actually passing our planet as the two bodies circle the sun, the astronomers said on Thursday.</p>
  • New 'Moon' Found Around Earth

    09/11/2002 11:35:35 AM PDT · by Cultural Jihad · 75 replies · 519+ views
    BBC ^ | September 11, 2002 | Dr David Whitehouse
    New 'moon' found around Earth There could be another one By Dr David Whitehouse BBC News Online science editor An amateur astronomer may have found another moon of the Earth. Experts say it may have only just arrived. Much uncertainty surrounds the mysterious object, designated J002E2. It could be a passing chunk of rock captured by the Earth's gravity, or it could be a discarded rocket casing coming back to our region of space. It was discovered by Bill Yeung from his observatory in Arizona and reported as a passing Near-Earth Object. It was soon realised however that far from...
  • ĎQuasií Moon Discovered Orbiting Earth

    06/16/2016 10:52:20 AM PDT · by smokingfrog · 52 replies
    VOA news ^ | 6-16-16 | unattributed
    Astronomers have discovered a new ďquasiĒ moon orbiting Earth. 2016 HO3, as the asteroid is called, is at least 40 meters across and could be larger, up to 100 meters, researchers say, but itís too far from Earth to qualify as a true satellite or mini-moon. "Since 2016 HO3 loops around our planet, but never ventures very far away as we both go around the sun, we refer to it as a quasi-satellite of Earth," said Paul Chodas, manager of NASA's Center for Near-Earth Object (NEO) Studies at the Jet Propulsion Laboratory in Pasadena, California. "One other asteroid -- 2003...
  • What was that?! NASA says asteroid entered atmosphere over Arizona (VIDEO)

    06/02/2016 4:16:37 PM PDT · by BiggerTigger · 43 replies
    abc15.com ^ | June 2, 2016 | abc15.com Staff
    A huge streak of light brightened the sky early Thursday morning, prompting worry and curiosity from many Valley residents. The first reports came in right around 4 a.m. from around the Valley and even in areas like Yuma, Flagstaff and Pine Top. Several callers also reported feeling the ground shake. After dawn, a strange trail of cloud-like patterns was left in the sky. NASA estimates a small asteroid, approximately 10 feet in diameter with a mass in the tens of tons, entered the atmosphere above Arizona just before 4 a.m. Reports place the object 57 miles above the Tonto National...
  • It Came from Outer Space?

    11/25/2004 5:13:07 PM PST · by SunkenCiv · 12 replies · 972+ 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 OrmŲ'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 OrmŲ'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...
  • The asteroid of 'uncertain orbit' that REALLY could smash into Earth, according to NASA

    02/29/2016 6:53:00 PM PST · by rdl6989 · 107 replies
    express.co.uk ^ | February 28, 2016 | Jon Austin
    AN ASTEROID set for a staggering close whistle past of Earth in just 10 days could return to strike the planet as early as next year, NASA has admitted. We are expected to be risk free when the space rock hurtles past us at as close as 11,000 miles away - 21 times closer to us than the moon - on March 8. But the US space agency cannot yet be 100 per cent certain about its orbital path. NASA gives near-Earth asteroid a condition code regarding the certainty of its travel from one to 10, with the latter meaning...
  • Vanity: Excuse me ? 30 meter asteroid within .1 lunar distance ?

    02/20/2016 9:05:26 PM PST · by Celerity · 111 replies
    You may need Java on, also this link has been giving a few people issues. The link is here (For copy/pasters) http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2013%20TX68&orb=1 Go to www.spaceweather.com and scroll down to the near-earth objects. 2013 TX68 Mar 5 0.044 LD 30 m
  • Asteroid TX68 is approaching!

    02/17/2016 2:03:07 AM PST · by djf · 31 replies
    Asteroid TX68 is coming! OK, it's probably gonna miss... but maybe not! Asteroid TX68, from it's name 2013 TX68 was discovered in 2013. It is supposed to approach closer than anything else recently, at .044 times the Lunar distance, or about 11,000 miles. Not sure why they use LD as a measurement because LD changes all the time, but so it goes... Comments or thoughts are always appreciated!
  • NASA Says ‚ÄúNo Chance‚ÄĚ Small Asteroid Will Hit Earth On March 5th

    02/06/2016 10:53:52 AM PST · by BenLurkin · 42 replies
    universetoday ^ | 02/06/2016 | Matt Williams
    On October 6th, 2013, the Catalina Sky Survey discovered a small asteroid which was later designated as 2013 TX68. As part Apollo group this 30 meter (100 ft) rock is one of many Near-Earth Objects (NEOs) that periodically crosses Earth's orbit and passes close to our planet. A few years ago, it did just that, flying by our planet at a safe distance of about 2 million km (1.3 million miles). And according to NASA's Center for NEO Studies (CNEOS) at the Jet Propulsion Laboratory, it will be passing us again in a few weeks time, specifically between March 2nd...
  • 100-Foot Asteroid to Buzz Earth Next Month

    02/06/2016 2:42:17 AM PST · by LibWhacker · 32 replies
    Discovery ^ | 2/5/16 | Mike Wall
    An asteroid as long as a basketball court will give Earth a close shave next month ‚ÄĒ though scientists aren‚Äôt sure just how close. The near-Earth asteroid 2013 TX68, which is thought to be about 100 feet (30 meters) in diameter, will zoom past our planet on March 5. The space rock could come as close as 11,000 miles (17,700 kilometers) ‚ÄĒ less than 5 percent of the distance from Earth to the moon ‚ÄĒ or stay up to 9 million miles (14.5 million km) away during the flyby, NASA officials said. ‚ÄúThe variation in possible closest-approach distances is due...
  • Photos Of The Christmas Full Moon Show A Rare, Beautiful Lunar Event

    12/25/2015 1:30:51 PM PST · by o_1_2_3__ · 11 replies
    Bustle ^ | APRIL SIESE
    The last full moon of the year also happens to be the first on Christmas in 38 years. Photos of the Christmas full moon offer a festive, bright look at the night sky from around the world. Given the time of year, this special lunar occurrence is also known as the full cold moon, though the temperature of the moon is neither affected by its phases nor the weather on earth. Nonetheless, NASA's John Keller, who works at the Goddard Space Flight Center describes it as a special event that showcases the moon's unique relationship to earth. Keller said: As...
  • 2003 SD220: Asteroid to flyby Earth on Christmas Eve in first of five encounters

    12/17/2015 12:46:11 PM PST · by Red Badger · 34 replies
    www.ibtimes.co.uk ^ | December 17, 2015 12:13 GMT | By Hannah Osborne
    Graphic of what a asteroid of this type would look like - Nasa/ESA/M A Garlick/University of Warwick/University of Cambridge =================================================================================================================== An asteroid will flyby Earth on Christmas Eve and should be visible with a telescope so long as skies are clear. The 2003 SD220 asteroid was discovered in 2003 and its 24 December appearance will be the first of five encounters with our planet over the next 12 years. Very little is currently known about the asteroid, other than it is travelling at around five miles per second and has an absolute magnitude of around 16.9. Initially scientists had thought...
  • Massive asteroid will pass Earth on Christmas Eve (but don‚Äôt worry....

    12/16/2015 8:03:08 PM PST · by BenLurkin · 19 replies
    dailymail.co.uk ^ | Ellie {Extinction Leve Event} Zolfagharifard
    A 1.5 mile-wide asteroid is expected to make its closest approach to Earth on Christmas Eve. Asteroid 2003 SD220, also known as asteroid 163899, will pass our planet from 6.7 million miles (11 million km) away - 28 times farther than the moon. Despite its huge distance, reports have circulated the asteroid could cause earthquakes and trigger volcanoes on Earth. But experts have dismissed these claims, saying that there is no scientific evidence to back up these theories. Nasa says the space rock will make a return to Earth in 2018, but it will pose no threat to our planet...
  • Rapid short-term cooling following the Chicxulub impact at the CretaceousĖPaleogene boundary

    05/19/2014 4:31:05 PM PDT · by SunkenCiv · 39 replies
    PNAS.org ^ | approved April 11, 2014 | Johan Vellekoop et al
    Here, for the first time (to our knowledge), we are able to demonstrate unambiguously that the impact at the Cretaceous¬ĖPaleogene boundary (K¬ĖPg, ‚ąľ66 Mya) was followed by a so-called ¬ďimpact winter.¬Ē This impact winter was the result of the injection of large amounts of dust and aerosols into the stratosphere and significantly reduced incoming solar radiation for decades. Therefore, this phase will have been a key contributory element in the extinctions of many biological clades, including the dinosaurs. The K¬ĖPg boundary impact presents a unique event in Earth history because it caused global change at an unparalleled rate. This detailed...
  • New detector perfect for asteroid mining, planetary research

    11/21/2015 8:16:42 AM PST · by Red Badger · 9 replies
    phys.org ^ | November 20, 2015 | by David Salisbury & Provided by: Vanderbilt University
    Concept of an asteroid redirect mission. Credit: NASA ==================================================================================================================================== The grizzled asteroid miner is a stock character in science fiction. Now, a couple of recent events - one legal and the other technological - have brought asteroid mining a step closer to reality. The legal step was taken when the Senate Commerce, Science and Transportation Committee passed a bill titled H.R. 2262‚ÄĒSPACE Act of 2015. The bill has a number of measures designed to facilitate commercial space development, including a provision that gives individuals or companies ownership of any material that they mine in outer space. According to one estimate,...
  • Photographer Caught Stunning Meteor Instead of Spooky Asteroid

    11/08/2015 7:45:00 PM PST · by SunkenCiv · 21 replies
    Gizmodo ^ | November 02, 2015 | Attila Nagy [Photo: Peter Komka/MTI]
    Hungarian photographer Pťter Komka wanted to capture the Halloween asteroid that looked like a skull, as it made its closest approach to Earth. What he got instead was a striking image of a meteor streaking across the sky. Komka set up his camera gear on an equatorial mounted tripod near the medieval castle of Salgů, and took several long exposure shot of the night sky, hoping to get some good enough image of the 2015 TB145 asteroid. Sadly the spooky space rock was too faint and did not appear in his photos. But what he finally captured in one photo...
  • Dead comet with skull face to hurtle by Earth on Halloween

    11/01/2015 7:14:40 AM PST · by BenLurkin · 9 replies
    AFP/Yahoo ^ | October 31, 2015
    Astronomers initially thought the object was an asteroid when they spotted it in early October, and named it Asteroid 2015 TB145. But using the US space agency's Infrared Telescope Facility (IRTF) on Mauna Kea, Hawaii, experts "have determined that the celestial object is more than likely a dead comet that has shed its volatiles after numerous passes around the sun," NASA's Jet Propulsion Laboratory said in a statement late Friday. ... The space rock has already grabbed attention with its unusually high speed and big size, about as large as a football stadium at 2,000 feet (600 meters) in diameter....
  • Double Whammy: 2 Meteors Hit Ancient Earth At The Same Time

    09/15/2015 9:53:39 AM PDT · by blam · 37 replies
    Fox News - Live Science ^ | 9-15-2015 | Elizabeth Palermo
    Elizabeth Palermo September 15, 2015An artist's depiction of the dual meteor strike. (Don Dixon/Erik Sturkell/University of Gothenburg) It's not altogether uncommon to hear about double rainbows, but what about a double meteor strike? It's a rare event, but researchers in Sweden recently found evidence that two meteors smacked into Earth at the same time, about 458 million years ago. Researchers from the University of Gothenburg uncovered two craters in the county of Jšmtland in central Sweden. The meteors that formed the craters landed just a few miles from each other at the same moment, according to Erik Sturkell, a professor...
  • Jupiter Has Taken a Massive Meteor Hit (So Earth Didnít Have To)

    09/12/2012 2:41:21 PM PDT · by LibWhacker · 47 replies
    Gizmodo ^ | 9/12/12 | Jamie Condliffe
    On Monday, Jupiter took a massive hit from a meteor, which was spotted by amateur astronomers based in the USóand if previous evidence is anything to go by, it could have saved Earth from a massive collision in the process. Dan Peterson of Racine, Wisconsin, was gazing at Jupiter on Monday when he saw a bright, white flash on the surface of the planet. When he posted his observation online, another astrophotographer, George Hall, discovered he'd unknowingly captured the massive explosion on video. Turns out it was probably a meteor striking the surface of the planetóand you can watch the...
  • Hubble Space Telescope Captures Rare Jupiter Collision

    06/06/2010 4:09:09 AM PDT · by jmcenanly · 16 replies · 1,672+ views
    NASA | 06.03.10
    Without warning, a mystery object struck Jupiter on July 19, 2009, leaving a dark bruise the size of the Pacific Ocean. The spot first caught the eye of an amateur astronomer in Australia, and soon, observatories around the world, including NASAís Hubble Space Telescope, were zeroing in on the unexpected blemish. Astronomers had witnessed this kind of cosmic event before. Similar scars had been left behind during the course of a week in July 1994, when more than 20 pieces of Comet P/Shoemaker-Levy 9 (SL9) plunged into Jupiterís atmosphere. The 2009 impact occurred during the same week, 15 years later....
  • Third Jupiter Fireball SpottedóóSky-Watching Army Needed?

    08/25/2010 9:30:12 AM PDT · by LibWhacker · 27 replies
    National Geographic ^ | 8/24/10 | Andrew Fazekas
    Amateur sightings prompt call for a network of backyard astronomers.On August 20, for the third time in about a year, amateur astronomers spotted a fireball above Jupiter's atmosphere. The discovery suggests the planet gets walloped more often than previously thought, say astronomers, some of whom are calling for a global "volunteer army" of backyard Jupiter watchers. The recent flash follows on the heels of July 2009 and June 2010 fireballs over the gas giant planet. (See "Bright Fireball Slams Into Jupiter" [June 2010] and "Jupiter Impact Creates Huge New Spot" [July 2009].) Astronomers speculate that the August 20 flash was...
  • Craters on Vesta and Ceres could hold key to Jupiterís age

    09/19/2009 4:03:05 PM PDT · by Fred Nerks · 15 replies · 772+ views
    SCIENCE CENTRIC ^ | 14 September 2009 00:02 GMT | by Anita Heward
    Crater patterns on Vesta and Ceres could help pinpoint when Jupiter began to form during the evolution of the early Solar System. A study modelling the cratering history of the largest two objects in the asteroid belt, which are believed to be among the oldest in the Solar System, indicates that the type and distribution of craters would show marked changes at different stages of Jupiterís development. Results will be presented by Dr Diego Turrini at the European Planetary Science Congress in Potsdam, Germany, on Monday 14 September. The study, carried out by scientists at the Italian National Institute for...
  • Hubble pictures Jupiter's 'scar'

    07/26/2009 5:15:10 PM PDT · by JoeProBono · 23 replies · 624+ views
    Hubble has trained its new camera on the atmospheric disturbance on Jupiter believed to have been caused by a comet or asteroid impact. The telescope used the Wide Field Camera 3 fitted on the recent shuttle servicing mission to capture ultra-sharp visible-light images of the scar. The dark spot near the gas giant's southern pole was noticed first by an amateur Australian astronomer.
  • Jupiter Struck by Object, NASA Images Confirm

    07/21/2009 6:07:43 AM PDT · by Red in Blue PA · 105 replies · 2,483+ views
    Foxnews ^ | 7/21/2009 | Staff
    PASADENA, California ó A large comet or asteroid has slammed into Jupiter, creating an impact site the size of Earth, pictures by an Australian amateur astronomer show. NASA's Jet Propulsion Laboratory confirmed the discovery using its large infrared telescope at the summit of Mauna Kea in Hawaii, said computer programer Anthony Wesley, 44, who discovered the impact zone while stargazing at home. News of Wesley's find on a backyard 14.5-inch reflecting telescope has stunned the astronomy world, with scientists saying the impact will last only days more. Wesley said it took him 30 minutes to realize a dark spot rotating...
  • Rethinking Jupiter

    11/12/2007 9:59:25 AM PST · by SunkenCiv · 23 replies · 94+ views
    Astrobio.net ^ | Monday, November 12, 2007 | Lee Pullen
    Without Jupiter acting as a "cosmic vacuum cleaner" sucking up these dangerous objects, there would be so many catastrophic impacts that life probably wouldn't have evolved on the Earth and we wouldn't be here today... "This vacuum cleaner idea goes back to when the long-period comets coming in from the Oort Cloud were viewed as being the only significant impact risk," says Horner. "In the 1950s there were only one or two near-Earth asteroids known, so they were viewed as oddities." ...Since the 1950s, scientists have discovered more objects in the solar system, and they say many of them could...
  • Jupiter Increases Risk Of Comet Strike On Earth

    08/24/2007 1:21:38 PM PDT · by blam · 84 replies · 1,235+ views
    New Scientist ^ | 8-24-2007 | David Shiga
    Jupiter increases risk of comet strike on Earth 11:53 24 August 2007 NewScientist.com news service David Shiga Earth experienced an especially heavy bombardment of asteroids and comets early in the solar system's history (Illustration: Julian Baum) Contrary to prevailing wisdom, Jupiter does not protect Earth from comet strikes. In fact, Earth would suffer fewer impacts without the influence of Jupiter's gravity, a new study says. It could have implications for determining which solar systems are most hospitable to life. A 1994 study showed that replacing Jupiter with a much smaller planet like Uranus or Neptune would lead to 1000 times...
  • Why the World Needs Asteroid Insurance: Resident Astronaut {sky is falling alert}

    10/11/2008 7:05:35 AM PDT · by shove_it · 13 replies · 404+ views
    Popular Mechanics ^ | 10/9/2008 | Thomas D. Jones
    A mini asteroid collided safely with Sudan this week, but mega disaster looms with nearly 1000 hazardous near-Earth objects roaming our universeóplus even more dangerous ones we haven't spotted yet. With no response plan for the worst-case scenario in place anywhere on Earth, four-time shuttle astronaut Thomas D. Jones offers a call to arms against the coming cosmic storm. Early last Monday, Richard Kowalski, a University of Arizona astronomer at the Catalina Sky Survey team's 60-in. search telescope atop Mt. Lemmon near Tucson, flashed word to NASA of the discovery of a new Near Earth Object (NEO). The small asteroid,...
  • Strange Asteroid, Comets, Fireballs....?

    01/25/2009 5:17:43 PM PST · by TaraP · 36 replies · 3,070+ views
    Spaceweather ^ | Jan 25th, 2009
    STRANGE ASTEROID: Newly-discovered asteroid 2009 BD is slowly passing by Earth today only 400,000 miles away. The small 10m-wide space rock poses no threat, but it merits attention anyway. The orbit of 2009 BD appears to be almost identical to the orbit of Earth. 2009 BD may be a rare co-orbital asteroid, circling the sun in near-tandem with our planet. Extrapolating the motion of 2009 BD into the future, we see that it remains in the vicinity of Earth for many months to come, never receding farther than 0.1 AU (9.3 million miles) until Nov. 2010. Future observations may reveal...
  • Asteroid hurtling towards Earth

    10/07/2008 3:20:16 PM PDT · by presidio9 · 54 replies · 2,081+ views
    Reuters ^ | October 07, 2008
    AN asteroid discovered today will hit Earth's atmosphere over Sudan in a few hours -SNIP- The asteroid would create a large fireball about 10.46pm EDT (1.46pm AEST) as it burns up, a team at the Harvard-Smithsonian Center for Astrophysics said. "We want to stress that this object is -SNIP- a threat," said Timothy Spahr, director of the International Astronomical Union's Minor Planet Center at Harvard in Massachusetts. "We're excited since this is the first time we have issued a prediction that an object will enter Earth's atmosphere," Dr Spahr said. The asteroid, known as a meteoroid, -SNIP- "A typical meteor...
  • Asteroid to hit Earth's atmosphere in hours

    10/06/2008 7:17:39 PM PDT · by TaraP · 51 replies · 2,027+ views
    courielmail.com,au ^ | October 6th, 2008
    AN asteroid discovered today will hit Earth's atmosphere over Sudan in a few hours but will burn up before it can hit the ground or endanger aircraft, astronomers say. The asteroid would create a large fireball about 10.46pm EDT (1.46pm AEST) as it burns up, a team at the Harvard-Smithsonian Center for Astrophysics said. "We want to stress that this object is not a threat," said Timothy Spahr, director of the International Astronomical Union's Minor Planet Center at Harvard in Massachusetts. "We're excited since this is the first time we have issued a prediction that an object will enter Earth's...
  • Asteroid Buzzes Earth Highlighting Cosmic Blind Spot

    03/21/2002 9:11:00 AM PST · by ex-Texan · 21 replies
    Space.com ^ | 3/21/2002 | Robert Roy Britt
    Asteroid Buzzes Earth Highlighting Cosmic Blind SpotBy Robert Roy Britt Senior Science Writer 3-21-2002 An asteroid large enough to have flattened a city buzzed Earth earlier this month and was not seen until after if flew harmlessly by. The space rock approached Earth in the glare of the Sun, a blind spot that made it impossible to see during the day or night from any terrestrial vantage point. The event illustrates the potential of a surprise hit by an asteroid, astronomers said. The object, now named 2002 EM7, was probably between 40 and 80 meters (130-260 feet) in diameter, said...
  • Large 'Spooky' Asteroid to Narrowly Miss Earth on Halloween

    10/20/2015 6:36:56 PM PDT · by Jed Eckert · 75 replies
    Accuweather ^ | October 20, 2015 | Brian Lada
    A newly discovered asteroid larger than a skyscraper will wiz past the Earth on Halloween, making a dangerously close approach to the planet. The asteroid, officially named 2015 TB145, was just discovered on Oct. 10, 2015, and is expected to make its close approach to the Earth at the end of the month.Some have already given the asteroid the nickname of "Spooky" due to the fact that it's closest approach to Earth is going to occur on Halloween. Fortunately, the asteroid will miss the Earth, but it will still make an uncomfortably close approach of 302,885 miles. To put this...
  • Scientists to see if they can save planet from asteroid

    10/04/2015 1:20:59 AM PDT · by WhiskeyX · 24 replies
    Newser ^ | October 03, 2015 | Arden Dier
    Come 2022, scientists will attempt to save all of humanity from an asteroid. Calm down, it's just a trial run. The joint US-European AIDAóthat's Asteroid Deflection and Assessmentómission intends to crash a probe into a 525-foot-wide asteroid known as Didymoon to see if the impact will change its orbital path. The egg-shaped asteroid is actually part of a binary system and orbits its larger partner, Didymos, every 12 hours, per Phys.org. NASA's Double Asteroid Redirection Test (DART) probe will crash into Didymoon at a speed of roughly 13,420mph, while ESA's Asteroid Impact Mission (AIM) will study the effects so researchers...
  • Volcano yields new type of diamond

    08/10/2015 6:00:05 PM PDT · by markomalley · 23 replies
    Jeweller Magazine ^ | 8/11/15 | Stephanie Chan
    A recent diamond discovery and technological advancements in outer space have exposed potential new metal and gemstone sources for the jewellery industry.Geologists have reportedly discovered another type of diamond within the lava of the Tolbachik volcano, located on the Kamchatka Peninsula in Russia.According to multiple media reports, the Russian Ministry of Science released a statement that read: ďThe solidified lava of the Tolbachik eruption [which occurred in 2012Ė13] carries within it a new and never-before-seen type of diamond ... According to the Russian geologists, these unique diamonds are not formed in the magmatic melt, but are created by volcanic gases...
  • NASA Pings a Passing Space Peanut

    08/01/2015 9:02:35 PM PDT · by BenLurkin · 7 replies
    discovery.com ^ | Aug 1, 2015 07:14 PM ET | Jason Major
    On July 25, 2015, the near-Earth asteroid 1999 JD6 made its closest pass of Earth in at least over a century, coming within 4.5 million miles of our planet (7.2 million kilometers, or about 19 times the distance between Earth and the moon) and traveling at a relative velocity of 45,410 mph (20.3 km/s). As the 1.2-mile (2 km) asteroid zipped by, NASA aimed two of its largest radio telescopes at it, bouncing radar waves off its surface to measure its size, shape, and rotation. ...1999 JD6 is whatís known as a ďcontact binary,Ē a peanut-shaped world thatís likely the...
  • Asteroid worth £3 TRILLION in precious metals set to pass Earth on Sunday

    07/17/2015 1:58:36 PM PDT · by Red Badger · 60 replies
    www.dailymail.co.uk ^ | Updated: 11:50 EST, 17 July 2015 | By Jack Millner
    An asteroid worth a potential £3.5 trillion ($5.4 trillion) is due to pass by Earth on Sunday, and you can watch it live from 11pm UK time (6.30pm ET). Asteroid 2011 UW-158's fly-by will be streamed live on the internet from an observatory in the Canary Islands. The space rock has attracted the attention of asteroid mining company Planetary Resources, because it is thought to have a 100 million ton core of platinum that the company might one day want to exploit. Asteroid 2011 UW-158 will pass within 1.5 million miles (2.4 million km) from Earth on Sunday - 30...
  • NASA Asteroid Redirect Mission on the brink of cancellation

    06/30/2015 11:55:03 AM PDT · by Marcus · 14 replies
    Houston Space Examiner ^ | June 30, 2015 | Mark R. Whittington
    NASAís Asteroid Redirect Mission is still gasping along, but at least one space blogger suggests that its cancellation is all but inevitable. In the meantime, Space News just on Tuesday reported that the space agency has decided that the ARM must actually capture a boulder and take it to a retrograde lunar orbit to be considered a success. This metric was actually in doubt, with some NASA managers suggesting that as long as an unmanned probe, propelled by a solar selection propulsion engine, rendezvoused with an asteroid and then returned, even without anything resembling a rock, it would be a...
  • Asteroid Day Takes Aim at Our Cosmic Blind Spot: Threats From Above

    06/30/2015 5:08:46 AM PDT · by Old Sarge · 8 replies
    NBC ^ | 29 JUN 2015 | Alan Boyle
    Scientists and spacefliers will be focusing attention on near-Earth objects when the first-ever Asteroid Day plays out on Tuesday ó not so much to raise money, but to raise awareness about the potential threat from above and what to do about it. That last part is the hard part, says Tom Jones, a planetary scientist and former NASA astronaut who's an adviser for Asteroid Day. He told NBC News that the biggest consciousness-raiser hit us two years ago, in the form of a nuclear-scale meteor blast that shook the Russian city of Chelyabinsk. "That was a crystallizing event for people...
  • NASA May Use Nukes To Defend Earth From Asteroids

    06/22/2015 12:28:27 PM PDT · by Red Badger · 47 replies
    Popular Science ^ | 06-22-2015 | By Sarah Fecht
    Illustration Of A Planetoid Crashing Into Earth In 2013, a 60-foot-wide meteor exploded over Russia, and no one saw it coming. The Chelyabinsk impactor was relatively small by interplanetary standards, but the blast injured about 1,500 people and damaged 7,000 buildings. If a larger rock were headed for Earth, how would we defend ourselves? The short answer is, scientists arenít really sure, but one solution sounds a lot like the plot from a 1998 Michael Bay movie: just nuke Ďem. In hopes of averting a space rock calamity, The New York Times reports that NASA has just sealed a deal...