The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start of the 2025 viewing season. These shimmering blue formations, also ...

Night sky photographer Ruslan Merzlyakov captured bright blue-white noctilucent clouds dancing over Nykøbing Mors in Denmark just before dawn on July 1.

That's not just your imagination — the sky really is more blue, and all because of science. To understand why the sky is so especially vivid in autumn, you first need to understand why it's blue ...

There are 10 main types of clouds. There's the Cumulus cloud, otherwise know as the Simpsons' cloud. "The cartoon cloud that forms on a sunny day. The fair weather cloud. It's like the generic one, ...

ST. LOUIS – The sky is always changing colors—from a bright blue on a clear day, to red and orange sunrises or sunsets, or multiple colors of a rainbow—there’s a lot going on that we don ...

Mars and Regulus will light up the night sky in a rare celestial display from the Red planet and icy blue star ...