SEEDED BY METEOR SMOKE NASAs AIM spacecraft has detected - TopicsExpress



          

SEEDED BY METEOR SMOKE NASAs AIM spacecraft has detected electric-blue clouds forming over Antarctica. These are noctilucent clouds (NLCs), and their apparition marks the beginning of the 2014-2015 season for NLCs in the southern hemisphere. NLCs are Earths highest clouds. Seeded by meteor smoke, they form at the edge of space 83 km above Earths surface. When sunlight hits the tiny ice crystals that make up these clouds, they glow electric blue. At the moment, only a few puffs and wisps of NLCs are visible over Antarctica. By Dec. 10th, the whole continent could be blanketed in electric blue as the bulb begins to glow in earnest. Stay tuned!... spaceweather/
Posted on: Sun, 30 Nov 2014 01:07:31 +0000

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