The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

One of the world's most magical places is this bioluminescent beach in the Maldives that shines brightly at night if you're ...

Venus, the Roman goddess of love and beauty, will gain "maximum brilliance" at night on Valentine's Day across Kentucky skies ...

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