Scientists have discovered Earth’s oldest asteroid strike occurred at Yarrabubba, in outback Western Australia, and coincided with the end of a global deep freeze known as a Snowball Earth. The …read more Source:: Science
Tag: asteroid
In death of dinosaurs, it was all about the asteroid — not volcanoes
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•Volcanic activity did not play a direct role in the mass extinction event that killed the dinosaurs, according to an international team of researchers. It was all about the asteroid. …read more Source:: Science
When the dinosaurs died, lichens thrived
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•When the asteroid hit, dinosaurs weren’t the only ones that suffered. Clouds of ash blocked the sun and cooled the planet’s temperature, devastating plant life. But fungi, which decompose dead …read more Source:: Science
Water found in samples from asteroid Itokawa
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•Cosmochemists have made the first-ever measurements of water contained in samples from the surface of an asteroid. …read more Source:: Science
Water-bearing minerals on asteroid Bennu
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•Astronomers have discovered evidence of abundant water-bearing minerals on the surface of the near-Earth asteroid (101955) Bennu. Using early spectral data from NASA’s OSIRIS-REx spacecraft orbiting the asteroid, the team …read more Source:: Science
Do volcanoes or an asteroid deserve blame for dinosaur extinction?
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•Scientists have obtained more precise dates for the Deccan Traps volcanic lava flows, linking peak activity more closely to the asteroid or comet impact 66 million years ago and the …read more Source:: Science
Water found on asteroid, confirming Bennu as excellent mission target
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•Spectral observations made by the OSIRIS-REx spacecraft identified hydrated minerals across the asteroid, confirming that Bennu, a remnant from early in the formation of the solar system, is an excellent …read more Source:: Science
Crater from asteroid that killed the dinosaurs reveals how broken rocks can flow like liquid
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•The same process that allows rock to flow like liquid during impact events allows ‘peak rings’ to form in large craters. …read more Source:: Science
When the dinosaurs died, so did forests — and tree-dwelling birds
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•Sixty-six million years ago, the world burned. An asteroid crashed to Earth with a force one million times larger than the largest atomic bomb, causing the extinction of the dinosaurs. …read more Source:: Science
Primordial asteroids discovered
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•Astronomers recently discovered a relatively unpopulated region of the main asteroid belt, where the few asteroids present are likely pristine relics from early in solar system history. The team used …read more Source:: Science