Nothing in her lab actually looks like a cloud; there are no mists swirling picturesquely in glass bottles. It’s mostly lasers and big black boxes. But the behavior of these lab-based cloud particles ...

Bright blue-white noctilucent clouds danced over the town of Nykøbing Mors in Denmark just before dawn, just when this spectacular photo was taken. Night sky photographer Ruslan Merzlyakov ...

On Saturday, in Washington, November flung off the gray mask it wore on Friday and once more dazzled the city with the glories of late autumn, with blue ... many clouds shared the sky, they ...

Corfu hotel guests hit back at fuming gran after she's served 'no ... blue streaks shining in the sky. Formed by ice and tiny dust particles on the edge of space, noctilucent clouds are the ...

They look like brush strokes across the blue." In contrast to the Cirrus clouds, there's the Cumulonimbus storm cloud, "which reaches up maybe eight miles into the sky, spreads out at the top in ...