When is February's full moon? Watch for planetary parade, occultation

February brings several special events, including a rare "occultation," and a planetary parade of six planets.

Supergiant star Betelgeuse is full of mysteries. New observations might solve the biggest one

Optical proof of a tiny companion orbiting supergiant star Betelgeuse is hard to come by. Hubble just spotted new evidence.

Both astronauts that flew on Boeing’s troubled Starliner mission are now retired

Veteran NASA astronaut Suni Williams announced her retirement Tuesday. Her extended mission to orbit due to the troubled Boeing Starliner test flight was her final foray.