Astronomers can usually spot "planet killer" asteroids long before they approach Earth. But what if they can't?

An asteroid just flew closer to Earth than many satellites, according to space agencies. The space object, named 2025 TF, ...

The asteroid, which was discovered earlier this year, was initially predicted to have a slim chance of hitting our planet in 2089 — temporarily earning it a spot at the top of the European Space ...

A recently discovered asteroid roughly the size of a commercial jet will pass within 1 lunar distance of Earth on Sept. 3. Here's how you can watch the build-up to the flyby live online, courtesy of ...

Anchor Brian Webb and Executive Producer Trenton Hooker talk with Harvard Professor Avi Loeb on the latest with 3I/Atlas after the International Asteroid Warning Network announced it's tracking the ...

The celestial object is what scientists call a quasi-moon — an asteroid that orbits the sun but appears to move alongside ...

With help from amateur astronomers, scientists tracked how an asteroid traveled from space, broke up in Earth's atmosphere and sent fiery fragments shooting to the ground, gathering new information ...

There are many programs that detect near-Earth asteroids as part of countries' planetary defense strategies. In the case of ...