An asteroid the size of a bus that is being dubbed a "mini-moon" has begun orbiting earth. Brian Hackney reports.

A SpaceX rocket that launched a planetary defense mission on Monday captured a breathtaking view of Earth shortly after reaching orbit.

Earth will have a cosmic guest. A so-called “mini moon” will join our actual moon in circling the planet until Nov. 25. What ...

A NASA spacecraft knocked into an asteroid two years ago to test planetary defense. Now, a new mission will inspect the ...

Hera will survey the asteroid deflected by NASA's DART spacecraft, the results of which could lay the foundation of Earth's ...

Scientists are eager to examine the impact’s aftermath up close to know exactly how effective Dart was and what changes might ...

Two years ago, a NASA spacecraft smashed into a small asteroid millions of miles from Earth to test a technique that could ...

Previously, experts suggested that this high-bombardment period was caused by debris from the breakup of a large asteroid between Mars and Jupiter, per Newsweek’s Jess Thomson. But Tomkins and his ...

ESA has launched the first planetary defense Hera spacecraft aboard a SpaceX Falcon 9 to investigate NASA-deflected Dimorphos ...

Scientists have discovered new evidence that it wasn't just one asteroid that wiped out the dinosaurs 66 million years ago.

A follow-up mission to DART, Hera will travel to a binary asteroid to observe the aftermath of NASA's wildly successful ...

Astronomers have good news about potentially hazardous asteroids lurking near our planet: There aren't as many as we thought.