These noctilucent clouds, reflecting light from the sun after sunset, have been visible in Martian skies for the past four fall seasons. Credit: NASA / JPL-Caltech / MSSS A rover got a new view of ...

Iridescent clouds are one of the rarest and most stunning natural sights in the atmosphere. These clouds have brilliant colours that resemble a rainbow including pink, green, blue, and purple, usually ...

Bright multi-colored clouds shining in the night sky above Mount Jökultindur in Iceland on Jan. 25. The dark skies in the Arctic Circle recently shone with ethereal multi-colored light. But this ...

"Spectacular" rainbow-colored clouds have been shimmering in the skies over and around the Arctic for more than three days thanks to an unusual cold snap in the upper atmosphere. And even more of ...

Arctic observers were granted a rare spectacle when rare rainbow-colored clouds streaked the skies ahead of the holiday season. A cold wave sweeping through the Arctic brought the rare polar ...