The Osprey is back in the air after being grounded for months following a crash last November that killed eight U.S. service members in Japan. But there are still questions ...

A stellar odd couple 700 light-years away is creating a chaotically beautiful display of colorful, gaseous filaments. The Hubble captured the pair, named R Aquarii, and their symbiotic interactions.

The Leonid meteor shower peaks in North America overnight from Nov. 17 to 18, with "shooting stars" and fast-moving fireballs ...

The latest aurora predictions for tonight help you make sure you're in the right place at the right time to see the northern ...