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Stanford Researchers Model Massive Asteroid Impact

Stanford Researchers Model Massive Asteroid Impact

Brett Smith for redOrbit.com - Your Universe Online Earth was irrevocably changed when the dinosaurs were wiped out about 65 million years ago by a massive asteroid, but a much bigger asteroid that struck the Earth nearly 3.3 billion years ago...

Latest Late Heavy Bombardment Stories

Moon Gets New Face GRAIL
2013-11-11 08:26:13

[ Watch the Video: Man In The Moon Got His Looks From Asteroids ] redOrbit Staff & Wire Reports - Your Universe Online Scientists have long believed that the moon’s trademark craters were created from the impact of massive asteroids, but new research appearing in the journal Science suggests that smaller planetoids might actually have been responsible for pummeling the lunar surface. The lunar craters were believed to have been created approximately four billion years ago,...

NASA Scientists Find Striking Similarity Between Moon And Asteroids
2013-03-26 07:24:40

Lawrence LeBlond for redOrbit.com - Your Universe Online Scientists from NASA´s Lunar Science Institute (NLSI), along with researchers from abroad, have discovered that Earth´s own natural satellite shares a striking similarity with Vesta, and perhaps other large asteroids roaming around the Solar System. The Moffett Field, California-based NLSI found that the same population of high-speed projectiles that bombarded the Moon four billion years ago, also impacted the giant...

2012-04-25 10:20:25

WASHINGTON, April 25, 2012 /PRNewswire-USNewswire/ -- Research by NASA and international scientists concludes giant asteroids, similar or larger than the one believed to have killed the dinosaurs, hit Earth billions of years ago with more frequency than previously thought. (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO) To cause the dinosaur extinction, the killer asteroid that impacted Earth 65 million years ago would have been almost 6 miles (10 kilometers) in diameter. By...

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2011-04-04 11:34:29

Bombardments of 'micro-meteorites' on Earth and Mars four billion years ago may have caused the planets' climates to cool dramatically, hampering their ability to support life, according to research published today in the journal Geochimica et Cosmochimica Acta. Scientists from Imperial College London studied the effects of the Late Heavy Bombardment (LHB), a period of time in the early Solar System when meteorite showers lasting around 100 million years barraged Earth and Mars. This...

2009-07-23 10:41:13

The study shows that the comets were probably captured 600 million years after the formation of the solar system, during the Late Heavy Bombardment. This extremely violent event was triggered when Saturn and Jupiter entered into orbital resonance:  Saturn's orbital period became exactly twice that of Jupiter, and the two planets passed each other more often, interacting and destabilizing everything around them. During this time, the entire architecture of the solar system was thrown into...

2009-06-04 15:03:09

British scientists say large bombardments of meteorites four billion years ago might have made early Earth and Mars more habitable for life. Imperial College London researchers said millions of meteor strikes during what's called the Late Heavy Bombardment approximately 3.9 billion years pelted Earth and Mars during a period of about 20 million years, possibly modifying the atmosphere on both planets. Researchers explained that when a meteor enters a planet's atmosphere, extreme heat causes...

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2009-06-01 09:15:00

Large bombardments of meteorites approximately four billion years ago could have helped to make the early Earth and Mars more habitable for life by modifying their atmospheres, suggests the results of a paper published today in the journal Geochimica et Cosmochimica Acta. When a meteorite enters a planet's atmosphere, extreme heat causes some of the minerals and organic matter on its outer crust to be released as water and carbon dioxide before it breaks up and hits the ground. Researchers...

2009-05-20 14:10:00

WASHINGTON, May 20 /PRNewswire-USNewswire/ -- A NASA-funded study indicates that an intense asteroid bombardment nearly 4 billion years ago may not have sterilized the early Earth as completely as previously thought. The asteroids, some the size of Kansas, possibly even provided a boost for early life. (Logo: http://www.newscom.com/cgi-bin/prnh/20081007/38461LOGO) The study focused on a particularly cataclysmic occurrence known as the Late Heavy Bombardment, or LHB. This event occurred...

2009-05-20 15:40:15

A U.S. space agency-funded study suggests an intense asteroid bombardment nearly 4 billion years ago might have provided a boost for early life on Earth. The National Aeronautics and Space Administration said the research suggests the asteroids might not have sterilized the early Earth as completely as previously thought. The study focused on a particularly cataclysmic occurrence known as the Late Heavy Bombardment, or LHB, NASA said. This event occurred approximately 3.9 billion years ago...

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2009-05-20 13:40:00

The bombardment of Earth nearly 4 billion years ago by asteroids as large as Kansas would not have had the firepower to extinguish potential early life on the planet and may even have given it a boost, says a new University of Colorado at Boulder study. Impact evidence from lunar samples, meteorites and the pockmarked surfaces of the inner planets paints a picture of a violent environment in the solar system during the Hadean Eon 4.5 to 3.8 billion years ago, particularly through a...