polar mesospheric
Noctilucent Clouds Perform Delicate Dance for NASA’s Balloon-Cam
Noctilucent clouds 50 miles above the Earth in the mesosphere. A NASA mission spent five days above the Arctic photographing…
6 years ago
Earth’s Highest Clouds Shine at the “Top of the Orbit”
Looking for a new desktop background? This might do nicely: a photo of noctilucent "night-shining" clouds seen above a midnight Sun…
11 years ago
An Early Start for Noctilucent Clouds
The season for noctilucent "night-shining" clouds is arriving in the northern hemisphere, when wispy, glowing tendrils of high-altitude ice crystals…
12 years ago