NASA trying one last time to contact its silent Mars rover Opportunity before calling it quits...

Faraway space snowman visited by NASA spacecraft has a flat _ not round _ behind...

An astrophysics institute says it has "reduced activities" at two research sites in central Mexico because astronomers suffered so many assaults and other crimes...

Vice President Mike Pence leads the honoring of the nation's fallen astronauts during a NASA day of remembrance at Arlington National Cemetery...

The British-built Mars rover that is scheduled to be launched in 2020 has been named after scientist Rosalind Franklin...

NASA, SpaceX aiming for a March test flight of 1st astronaut capsule from a private company...

Two tiny satellites have fallen silent millions of miles away, after proving new technology at Mars...

Our Milky Way galaxy is truly warped, at least around the far edges...

Residents and tourists in the town of Vinales in western Cuba are reporting seeing a flare passing through the sky and hearing an explosion that authorities say could be a meteorite...

Where's my robot lawn mower? Roomba-maker finally has an answer...