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

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

An official state of the union for 66 years, Alaska is known for its glaciers, permafrost and national parks. Home to North ...

NASA’s Curiosity rover observed a feather-shaped iridescent cloud, offering insights into Martian atmospheric conditions.

Credit: NASA/JPL-Caltech/MSSS/SSI/Cover Images NASA has unveiled a series of stunning new images capturing vibrant clouds ...

Readers’ photos celebrate sunrises and sunsets, when the light is the most pleasing. Fifty-one photos were sent in; here are ...