Residents in Tampa Bay, Florida were confounded after seeing what seemed to be an explosion in the sky around Thursday's ...

At least two mass extinction events in Earth's history were likely caused by the "devastating" effects of nearby supernova ...

This phenomenon known as a "planet parade," will feature Mercury, Venus, Mars, Jupiter, Saturn, Uranus and Neptune all present at the same time along a line in the night sky on Friday, NASA says.

"If NASA had the failure rate SpaceX does, Elon Musk would be firing everyone and Congress would be demanding to know where ...