Estimating a mass for a potentially hazardous asteroid (PHA) is perhaps the single most important thing to understand about ...

The dinosaurs were wiped out by an asteroid, but does that mean we risk suffering the same fate - and should you be worried about the possibility? Leah Crane sets the matter straight ...

"All together, we have a better sense of what this building-sized asteroid is like." ...

"For asteroids of the size scale relevant to planetary defense (i.e., ∼50-500 m), the mass can only be directly measured ...

Tiny life forms tucked into debris from an asteroid hit could catapult to other planets—including Earth—and survive, a new ...

Learn how bacteria survived a simulated asteroid impact and could travel between planets on asteroid debris.

A NASA planetary expert has revealed that humankind has no way to protect against a city-killer asteroid if it were to head ...

A super-tough microbe may be able to survive being blasted from Mars into space—opening the door to interplanetary life ...

Add Yahoo as a preferred source to see more of our stories on Google. Recently, the online world has been abuzz with speculation that NASA has confirmed the discovery of a second moon in Earth's orbit ...

Add Yahoo as a preferred source to see more of our stories on Google. The OSIRIS-REx spacecraft spent two years observing the asteroid Bennu before it collected a ...

Microbes blasted off a planet by an asteroid strike may survive the journey to ...