Howthe dinosaur-killing asteroid primed Earth for modern life. Marine die-offs after the impact may have created opportunities for the life that survived around the globe, new data reveal. Anewly discovered impact crater below the seafloor hints at the possibility that more than one asteroid hit Earth during the time when dinosaurs went extinct. UArizona researcher Veronica Bray, who specializes in craters found throughout the solar system, is co-author of a new study about the discovery. Thelatest evidence suggests Earth and the other planets in the Solar System were subject to intense asteroid bombardments until about 3.2 billion years ago, and sporadically since.
Theasteroid that wiped out the dinosaurs may have catapulted life from Earth to Mars and Jupiter's moon Europa, researchers say.
Theimpact of the hit was so huge, and it resulted in the extinction of dinosaurs, then dominant species on the blue planet. is making a close approach with
Thedust is all that remains of the 7-mile-wide asteroid that slammed into the planet millions of years ago, triggering the extinction of 75% of life on Earth, including all nonavian dinosaurs.

Theasteroid that killed the dinosaurs wiped out the majority of species on Earth – but not mammals (Credit: Nasa/Don Davis) or from the molten rock that returned to earth after the impact.

Thebig picture: A massive asteroid slammed into Earth roughly 66 million years ago, triggering a cataclysmic event that wiped out roughly 75 percent of all life on the planet. Now, researchers
at 4:25 PM EDT. By Nick Mordowanec. Staff Writer. For the first time, researchers have been able to show hard data that a large injection of sulfur impacted

Mostscientists agree a meteor impact, called Chicxulub, in Mexico’s Yucatan Peninsula, accompanied the extinction of the dinosaurs 65 million years ago. But until now, the time of the Great Dying 250 million years ago, when 90 percent of marine and 80 percent of land life perished, lacked evidence and a location for a similar impact event.

The impact: If a huge asteroid had struck Earth at the end of the Cretaceous, it would have flung off particles from the site where it hit. So, if the asteroid hypothesis were correct, we should find these particles at the impact Scientists agreed that the evidence was strong—dinosaurs had gone extinct and there was a widespread

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