Donaldjohanson, a main belt asteroid, could be a relic of a cosmic collision that took place 150 million years ago.

The 700–1,300 feet-wide space rock deformed rocks more than six miles from the impact site when it hit 600 million years ago.

Around 600 million years ago, Earth was home to strange, soft-bodied sea creatures, but a powerful asteroid impact in what is ...

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"Scientifically there's a huge amount we can learn from asteroids," says Alan Fitzsimmons, an astronomer at Queens University ...

The six-mile-wide asteroid punched a one-way ticket toward extinction for all non-avian dinosaurs. Some 66 million years ...

Once the new measurements were taken and the math was done, the probability of YR4 hitting the Earth began to decline, ...

which was the likely impact site of the 6-mile-wide asteroid that 65 million years ago caused the extinction of not only the ...

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Astronomers believe thousands of large undiscovered asteroids, that could cause regional damage, may be in space.

For a brief window, Asteroid 2024 YR4 looked like a planetary ... including 973 “planet killers” of more than half a mile in diameter. Most pose no risk. But NASA estimates that only about ...