An asteroid estimated to be a kilometer (3,451 feet) wide will fly by Earth on January 18. The video in the media player above is from a related report. It will pass within 1.2 million miles of our ...

In late 2022, NASA celebrated its Double Asteroid Redirection Test (DART) as a massive success, a proof of concept for saving humanity in case a similar space rock were to ever head straight for Earth ...

The asteroid Dimorphos, left, is shown with its larger companion Didymos in space as it blasts dust and boulders in a lopsided debris cone following the NASA DART mission on Sept. 26, 2022. Credit: ...

Smacking a planet-threatening asteroid comes with big responsibility. If we slam an impactor into an asteroid in exactly the wrong spot, the space rock may pass through a "gravitational keyhole" that ...