Feb. 14 (UPI) -- Friday's Google Doodle celebrates Valentine's Day. The artwork shows a variety of yummy-looking chocolates in pink wrappers with "Google" spelled out in icing on the tops of treats.

Blue Ghost will spend the next 16 days in lunar orbit, if all goes to plan. It will conduct additional engine burns to circularize its path around Earth's nearest neighbor, then attempt a landing in ...

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

The phenomenon of twilight clouds was first observed on Mars in 1997 during NASA’s Pathfinder mission. However, it wasn’t ...