12 years of W.M. Keck Observatory imagery of star system HR 8799 have been time-lapsed. The system hosts four planets that ...

Read a sci-fi short story every month and join a virtual community of fellow science fiction fans! NASA has given its ...

Why do some places wait 1,000 years to see a total solar eclipse while others get two in a decade? The surprising orbital mechanics behind where eclipses happen — and don't.

Suzie Dills says people in Canton will be able to see a total lunar eclipse in March. Here's when and where to look.

By taking advantage of a maneuver that would see a spacecraft fire rocket engines while in the solar corona, that spacecraft’s velocity could receive a huge boost — enough to allow it to catch up with ...