Shoppers alarmed by what's happening at malls: "Living in hell" Georgia student charged in teacher's death from prank gone wrong speaks out The war that never ended: Israel seizes moment to finish ...

Add Yahoo as a preferred source to see more of our stories on Google. This artist’s concept depicts a potential volcanic exomoon between the exoplanet WASP-49Ab, left, and its parent star.

While aliens in science fiction hop between planets on vast spaceships, scientists say real–life extraterrestrials might take a far less glamorous means of transport. When an asteroid slams into a ...