Dino-killing asteroid traced back 160m years
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T-Rex was history before he was even born The dinosaur-busting asteroid that slammed into Earth some 65 million years ago has been traced back to a collision between two monster chunks of rock 160 million years ago, out in the main asteroid belt.â¦
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Good news for dinosaur fans: There are probably a lot more of them waiting to be discovered.
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A forest fire has led to a chance discovery of debris from the impact of a meteorite 1.85 billion years ago, more than 450 miles away at Sudbury, Ontario.
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Humankind got spied on by a huge space invader on Wednesday. An asteroid named for a Celtic god of war was to come closer to Earth this week than it has since 1353.
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The giant Toutatis asteroid passes by the Earth on Wednesday at distance of less than 1.6 million km.
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The earliest evidence for the existence of reptiles is found in  rocks dating back 315 million years.
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Scientists working off the Yucatan Peninsula are preparing to use sound waves to search for information about an asteroid that may have wiped out the dinosaurs 65 million years ago.
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PASADENA, Calif. NASA scientists have now ruled out the possibility that a recently discovered asteroid could hit Earth 25 years from now.
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Near the sprawl of the Capital Beltway, an amateur paleontologist found what he says are the first footprints ever uncovered of a 6-foot-long plant-eating dinosaur that roamed the Earth about 100 million years ago.
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Bones found at a prehistoric burial site indicate they belonged to victims of an Neolithic Age massacre, say scientists.
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ACAPULCO, Mexico _ There's a new extraterrestrial suspect in the mysterious, highly debated disappearance of the woolly mammoth some 12,900 years ago. A team of two dozen scientists say the culprit was likely a comet that exploded in the atmosphere above North America.
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Chinese scientists said Friday they had found fossils belonging to six baby dinosaurs that died in a volcanic mudflow 125 million years ago.
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An asteroid that exploded over Siberia a century ago, leaving 800 square miles of scorched or blown down trees, wasn't nearly as large as previously thought, a researcher concludes, suggesting a greater danger for Earth.
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Two new studies throw some doubt into the conventional wisdom of what the Earth was like when dinosaurs roamed it
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And snaps pics of Mars The comet-hunting spacecraft Rosetta has sent back its first sighting of the asteroid 21-Lutetia, one of two rocky bodies it will study en route to the comet 67p Churyumov-Gerasimenko. It will not get anywhere close to the rock for more than two years, but has already begun sending back preliminary data.â¦
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Toutatis, a mountain-sized asteroid, came the closest to the Earth since at least the 12th century, allowing scientists to gather data about its trajectory and features, the US National Aeronautics and Space Administration said.
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Additional observations have ruled out the chance that a recently discovered asteroid, believed to be about 1,300 feet long, could hit Earth in 2029, NASA scientists said.