The possible "mini-moon" quietly started orbiting Earth three years ago, and was just detected by astronomers.
The Yarrabubba impact structure in Australia dates back some 2.2 billion years, 200 million years older than any other known crater.
The apocalyptic 24 hours after a huge asteroid struck Earth is written into the centre of an underwater impact crater.
It was the closest miss in recorded history.
Lindley Johnson is NASA’s Planetary Defense Officer and in many ways, the fate of the Earth rests in his hands. But he’s not stressed about it.
A new study provides best evidence yet of how the "Cretaceous–Paleogene extinction event" went down.
Investigating what a real life Deep Impact-style scenario might look like—in a playful and gentle way.
We asked an astronomer, who told us yes, it might be.