While astronomy and clouds don’t usually mix, a rare type of atmospheric phenomenon, called noctilucent or night-shining ...

If you’ve noticed some strange blue clouds in the night sky recently, you’re not alone. Uncharacteristically blue nighttime clouds, usually seen over polar regions, have been visible as far ...

But climate change may be playing a role. An animation based on data from NASA’s AIM spacecraft shows the sky over Antarctica glowing blue at the start of noctilucent cloud season in the Southern ...