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Keyword: asteroid

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  • A bright fireball over Tokyo explodes with the force of 165 tons of TNT

    07/04/2020 6:52:44 PM PDT · by BenLurkin · 60 replies
    CNET ^ | July 4, 2020 | Eric Mack
    Videos of the event show a spectacular light with green and purplish hues flying across the sky for just a few seconds at around 2:30 a.m. local time, before the light fizzles out. The impact of what was likely a small asteroid colliding with our atmosphere was picked up by a few of the infrasound monitoring stations set up around the world and overseen by the Comprehensive Nuclear-Test-Ban Treaty Organization. The International Meteor Organization reports that the meteoroid was visible from a large part of Japan's Kanto region. The IMO estimates the space rock could've been around 5 feet (1.6...
  • Space Exploration Is Back, And Asteroid Mining Is The Next Gold Rush

    06/13/2020 8:38:36 AM PDT · by Kaslin · 48 replies
    The Federalist ^ | June 13, 2020 | Faith Battum
    By harnessing the innovation unleashed by the free enterprise system, private space enterprise is ready to explore the next untapped horizon: asteroids. We’re going to the moon. We’re going to Mars. And, before you know it, we’ll be going to the asteroid belt.Space is back, baby. It’s back in the news, back in our thoughts, and back in the culture. America, and the world, are better for it.Over the past few years, space exploration has returned to public consciousness in ways not since the first shuttle mission in 1981, or even since Americans landed men on the moon then brought...
  • NASA spacecraft swoops down low over asteroid Bennu to eye sampling site

    06/09/2020 8:38:01 PM PDT · by BenLurkin · 12 replies
    space.com ^ | 08 June 2020 | By Chelsea Gohd
    The probe has been orbiting the asteroid since 2018 and has been preparing to collect a chunk of asteroid rock, which it will bring back to Earth in 2023. OSIRIS-REx is set to take the sample from the site named Nightingale on Oct. 20, 2020, but on May 26 the spacecraft took a dive toward Osprey, the backup sample collection site for the mission. OSIRIS-REx dropped down to just 820 feet (250 meters) above the site, which is the closest the spacecraft has been to Osprey. During the operation, the probe took 347 images from PolyCam, one of three cameras...
  • Tunguska event may be caused due to an asteroid

    05/28/2020 3:47:45 PM PDT · by SunkenCiv · 74 replies
    Tech Explorist ^ | May 21, 2020 | Amit Malewar
    On the morning of 30 June 1908, a large explosion occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia. That event is known as the Tunguska event that leveled trees across more than 2,000 square kilometers. It is classified as an impact event, even though no impact crater has been found. Due to the remoteness of the site and the limited instrumentation available at the time of the event, modern scientific interpretations of its cause and magnitude have relied chiefly on damage assessments, and geological studies conducted many years after the fact. The most likely cause...
  • Have scientists finally found the meteorite which set off the mysterious 1908 Tunguska catastrophe?

    05/21/2012 9:32:37 PM PDT · by null and void · 38 replies
    Daily Mail ^ | 08:49 EST, 17 May 2012 | Rob Waugh
    At 7.17am on June 30, 1908, an explosion like a hydrogen bomb erupted in Siberia - and until now, scientists have offered no conclusive explanation for the event.The Tunguska event occurred near the Tunguska River in SiberiaItalian scientists claim to have found chunks of a meteorite in nearby Lake Cheko Seismic reflection and magnetic data revealed an anomaly close to the lake center, about 30ft below the lake floor compatible with the presence of a buried stony object and supports the impact crater origin for Lake Cheko.' 'The sky split in two and fire appeared high and wide over the...
  • Astronomy Picture of the Day -- Tunguska: The Largest Recent Impact Event

    10/01/2011 9:12:53 PM PDT · by SunkenCiv · 32 replies
    NASA ^ | October 02, 2011 | (see photo credit)
    Explanation: Yes, but can your meteor do this? The most powerful natural explosion in recent Earth history occurred on 1908 June 30 when a meteor exploded above the Tunguska River in Siberia, Russia. Detonating with an estimated power 1,000 times greater than the atomic bomb dropped over Hiroshima, the Tunguska event leveled trees over 40 kilometers away and shook the ground in a tremendous earthquake. Eyewitness reports are astounding. The above picture was taken by a Russian expedition to the Tunguska site almost 20 years after the event, finding trees littering the ground like toothpicks. Estimates of the meteor's size...
  • Crater From 1908 Russian Space Impact Found, Team Says (Tunguska)

    11/14/2007 8:31:07 PM PST · by blam · 63 replies · 141+ views
    National Geographic ^ | 11-7-2007 | Maria Cristina Valsecchi
    Crater From 1908 Russian Space Impact Found, Team Says Maria Cristina Valsecchi in Rome, Italy for National Geographic NewsNovember 7, 2007 Almost a century after a mysterious explosion in Russia flattened a huge swath of Siberian forest, scientists have found what they believe is a crater made by the cosmic object that made the blast. The crater was discovered under a lake near the Podkamennaya Tunguska River in western Siberia, where the cataclysm, known as the Tunguska event, took place (see map). On June 30, 1908, a ball of fire exploded about 6 miles (10 kilometers) above the ground in...
  • A possible impact crater for the 1908 Tunguska Event

    06/22/2007 11:46:00 AM PDT · by Mike Darancette · 25 replies · 7,696+ views
    Terra Nova ^ | 7/01/2007 | Terra Nova
    The so-called Tunguska Event refers to a major explosion that occurred on 30 June 1908 in the Tunguska region of Siberia, causing the destruction of over 2000 km2 of taiga, globally detected pressure and seismic waves, and bright luminescence in the night skies of Europe and Central Asia, combined with other unusual phenomena. The Tunguska Event may be related to the impact with the Earth of a cosmic body that exploded about 510 km above ground, releasing in the atmosphere 1015 Mton of energy. Fragments of the impacting body have never been found, and its nature (comet or asteroid) is...
  • Asteroid that wiped out the dinosaurs 66 million years ago crashed into Earth at 'the deadliest possible angle' of 60 degrees which maximized production of greenhouse gases

    05/26/2020 11:45:21 AM PDT · by Olog-hai · 72 replies
    Daily Mail (UK) ^ | 11:45 EDT, 26 May 2020 | Ian Randall
    The asteroid that wiped out the dinosaurs around 66 million years ago crashed into Earth at the deadliest possible angle, researchers have concluded. The giant impacter struck what is today Mexicos Yucatn Peninsula at around 60 degrees maximizing the production of climate-altering greenhouse gases. The global disaster caused by the space rock which was bigger than Mount Everest was far worse than once thought, Imperial College London experts said. Previous studies had suggested the asteroid came in at an angle of around 30 degrees, while others concluded that it crashed almost straight down. However, the teams computer...
  • Asteroid sneaks past satellites in one of the closest flybys on record

    05/06/2020 1:58:13 PM PDT · by BenLurkin · 59 replies
    cnet.com ^ | 05/05/2020 | Eric Mack
    A previously unseen asteroid the size of a truck flew about 4,350 miles (7,000 kilometers) over the Pacific Ocean on Monday, making it one of the closest passes by our planet on record. Astronomers had no notice of asteroid 2020 JJ's existence, as it was discovered using the Mt. Lemmon Survey in Arizona right around the time it reached its closest point to us. Had 2020 JJ actually struck Earth, most of it probably would have burned up in the atmosphere. In other words, this space rock wasn't any sort of existential threat, but it did fly closer than many...
  • See the big asteroid 1998 OR2 just before its Earth flyby in a Slooh webcast today

    04/29/2020 4:22:42 AM PDT · by BenLurkin · 20 replies
    space.com ^ | 04/29/2020 | Hanneke Weitering
    Slooh will broadcast live telescope views of the near-Earth asteroid, called 1998 OR2, tonight (April 28) beginning at 7 p.m. EDT (2300 GMT). You can watch it live here on Space.com, courtesy of Slooh, or directly from Slooh.com and its YouTube page. This webcast will be free for anyone to watch, but paid members of Slooh can also tune in at Slooh.com and join a so-called "star party" on Zoom, where viewers will be able to join the discussion. Slooh astronomers will also be answering members' questions during this "star party." The one-hour public event will commence just 11 hours...
  • Giant asteroid flying by Earth next week looks like it's wearing a face mask

    04/23/2020 6:56:19 PM PDT · by BenLurkin · 33 replies
    CNN ^ | 04/23/2020 | Ashley Strickland
    The asteroid is called 52768 (1998 OR2), and it was first spotted in 1998. On April 29, it will pass within 3,908,791 miles of Earth, moving at 19,461 miles per hour. That's still 16 times farther than the distance between Earth and the moon. The flyby is expected to occur on Wednesday, April 29, at 5:56 a.m. ET, according to NASA's Center for Near-Earth Object Studies. The center tracks Near-Earth Objects, or NEOs, that could collide with Earth. Arecibo Observatory is a National Science Foundation facility managed by the University of Central Florida. A team of experts has been monitoring...
  • Newfound asteroid the size of a house will fly safely by Earth Wednesday

    04/15/2020 11:22:45 AM PDT · by BenLurkin · 44 replies
    space.com ^ | 04/14/2020 | tarik Maliq
    The asteroid 2020 GH2 will pass Earth at a range of about 223,000 miles (359,000 kilometers). The average distance from the Earth to the moon is about 239,000 miles (385,000 km). Asteroid 2020 GH2 is about between 43 and 70 feet (13-70 meters) wide, or about the size of a detached house, according to data from the Center for Near Earth Object Studies at NASA's Jet Propulsion Laboratory and the agency's Asteroid Watch Twitter account. It was first discovered on Saturday (April 11) and is being tracked by astronomers at several observatories, including the Catalina Sky Survey at Mount Lemmon...
  • See every square foot of asteroid Bennu, Earth's little frenemy

    04/07/2020 3:17:34 PM PDT · by BenLurkin · 26 replies
    Engadget ^ | 04/07/2020 | Steve Dent
    While it has a face only an astrogeologist could love, that rubble could be as old as the solar system itself. Bennu is also number two on the Palermo Technical Impact Hazard scale, meaning theres a (slight) chance it could impact Earth very violently in around 150 years. And now, Bennu has the distinction of being the subject of the highest resolution mosaic ever made of any planetary body. The image was collected by NASAs OSIRIS-REx spacecraft between March 7th and April 19th, 2019. At the time, it was about 2 to 3 miles from the surface of the 1,600...
  • Asteroids (2020 GW1) (2020 GQ1) (2020 GF1) Close Approach April 7, 2020 and April 8, 2020 [very cool visualization of NEOs approaching -and missing the Earth]

    04/06/2020 7:43:51 PM PDT · by DoodleBob · 19 replies
    YouTube ^ | April 6, 2020 | ASTEROID TRACKER
    Asteroids (2020 GW1) (2020 GQ1) (2020 GF1) Close Approach April 7, 2020 and April 8, 2020 Music by:DivKid -Dreamer
  • Trump signs executive order to support moon mining, tap asteroid resources

    04/06/2020 2:45:18 PM PDT · by BenLurkin · 54 replies
    space.com ^ | April 6, 2020 | Mike Wall
    President Donald Trump signed an executive order today (April 6) establishing U.S. policy on the exploitation of off-Earth resources. That policy stresses that the current regulatory regime notably, the 1967 Outer Space Treaty allows the use of such resources. This view has long held sway in U.S. government circles. For example, the United States, like the other major spacefaring nations, has not signed the 1979 Moon Treaty, which stipulates that non-scientific use of space resources be governed by an international regulatory framework. And in 2015, Congress passed a law explicitly allowing American companies and citizens to use moon...
  • Huge asteroid 1998 OR2 will zip harmlessly by Earth April 29. See the latest telescope photos. (more about which to worry...NOT)

    04/04/2020 12:23:13 PM PDT · by DoodleBob · 34 replies
    Space ^ | April 4, 2020 | Hanneke Weitering
    The huge "potentially hazardous" asteroid 1998 OR2 is just a few weeks away from its close encounter with Earth, and you can watch the giant space rock's approach online or with a small telescope.While asteroid 1998 OR2 is large enough to wreak havoc on Earth if it were to strike our planet, it won't come anywhere near a collision when it flies by on April 29. "On April 29, asteroid 1998 OR2 will safely pass by 3.9 million miles/6.2 million kilometers," scientists with NASA's Asteroid Watch program said in a Twitter update as they debunked a Daily Express report...
  • The Federal Reserve Now Owns 15 Percent of the U.S. Treasury Market; At Its Current Rate, It Could Own the Whole Market in Less than Two Years

    03/28/2020 5:38:53 PM PDT · by NRx · 15 replies
    Wall Street on Parade ^ | 03-28-2020 | Pam Martens and Russ Martens
    According to the U.S. Treasury, as of February 29, 2020, there was $16.9 trillion in marketable U.S. Treasury securities outstanding. Of that amount, at the end of February, the Federal Reserve held $2.47 trillion or 14.6 percent making it, by far, the largest single holder of U.S. Treasuries anywhere in the world. ...But exactly how can a so-called free market function smoothly if the countrys own central bank is cornering the market. Salomon Brothers paid a $290 million fine and came close to getting slapped with criminal charges by the U.S. Department of Justice in 1992 for manipulating prices...
  • This powerful ion engine will be flying on NASA's DART mission to try and redirect an asteroid

    03/26/2020 7:35:10 PM PDT · by BenLurkin · 10 replies
    Phys.org ^ | 03/26/2020
    NASA's DART (Double Asteroid Redirection Test) mission is scheduled to launch on July 22, 2021. It's a demonstration mission to study the use of kinetic impact to deflect an asteroid. It'll head for the tiny binary asteroid system called Didymos, (or 65803 Didymos.) This double asteroid system poses no threat to Earth. The larger of the pair, named Didymos A, is about 780 meters (2560 ft.) in diameter, while the smaller one, Didymos B, is only about 160 meters (535 ft.) DART will crash itself into the Didymos B. It's close to the typical size of an asteroid that threatens...
  • NASA Spots 4 Asteroids Headed For Earth This Weekend

    03/20/2020 7:12:58 PM PDT · by bitt · 93 replies
    ibtimes.com/ ^ | 3/10/2020 | Inigo Monzon
    KEY POINTS NASA detected four asteroids approaching Earth The biggest asteroid in the group measures 180 feet wide All four asteroids will approach Earth this weekend NASAs automated asteroid tracking system has detected four near-Earth objects that are expected to approach the planet this weekend. According to the agency, the biggest asteroid in the group is about as big as the Leaning Tower of Pisa in Italy. The first asteroid that will approach Earth this weekend has been identified by NASAs Center for Near-Earth Object Studies (CNEOS) as 2020 FK. As indicated in CNEOS database, this asteroid has an estimated...