Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its ...

NASA's Curiosity rover captures stunning images of Martian twilight clouds, shimmering in red and green hues, revealing ...

NASA's Curiosity rover captures stunning images of Martian twilight clouds, shimmering in red and green hues, revealing ...

To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video NASA's Curiosity ...

During the day, folks can call this a 'sun halo', but at night and when associated with the moon, try a 'lunar halo'. These ...

Bright and dazzling, waves radiating rainbow colors sweep across the northern skies of Sweden, displaying beautiful hues. Known as "nacreous clouds" or "mother-of-pearl clouds," these clouds are a ...

A moon dog occurs at night in the winter when the moon is full, or near full, casting light through high clouds.

BISMARCK, N.D. (KFYR) - To create atmospheric optics we need two things: ice crystals in the air and a light source. All ...

Experts say that rings around the moon can pop up from time to time, but have you ever seen one in Denver? Last night, at ...

Halos are often the result of ice crystals in cirrus clouds. When moon or sunlight shines through these crystals, the light ...

American space agency NASA publishes a short video showing iridescent clouds moving in the thin Martian atmosphere, as seen ...