Melanie Bonnell caught these high-level cirrus clouds in Sydney, N.S., at sunset. While not quite the same, a unique type of ...

Friday with the help of high pressure, we clear up for the morning, but another system towards the west is hot on our heels. High wispy clouds roll as winds from the southwest help push ...

They float 60 to 80 kilometers above the surface of the Red Planet, where frigid temperatures cause the carbon dioxide to condense into colorful, wispy clouds. Some plumes descend to 50 kilometers ...