According to NASA, an asteroid is labelled "potentially hazardous" based on a combination of factors: its size and how close ...

Cosmic “touchdown airbursts” — explosions of comets or asteroids above Earth’s surface — may be far more common and destructive than previously thought, according to new research. Unlike ...

Interstellar comet 3I/ATLAS will make its closest approach to Earth early on Friday, Dec. 19. While it won't come close ...

Most dangerous asteroids don’t come with warning signs, and some are almost impossible to spot until it’s too late.

Since then, astronomers have observed all manner of lensing caused by all manner of bodies—perhaps none as visually striking ...

NASA's Hubble Space Telescope has gotten a rare peek at the aftermath of two cosmic collisions — and helped scientists solve ...

A pair of nascent planets have been caught smashing together around the nearby star Fomalhaut, and in doing so have solved the puzzle of its famous ‘planet’ ...

Interstellar comet 3I/ATLAS makes its closest approach to Earth on Dec. 19. Here's how you can track its progress both during ...

Our Solar System contains tens of thousands of potentially dangerous asteroids that could wipe out an entire city, or worse.

David Rankin of the Catalina Sky Survey in Arizona spends nights scanning the solar system for potentially catastrophic space ...