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Clouds near space

Credit: LASP/University of Colorado
Night-shining clouds started glowing high above Antarctica earlier than usual this year, observations from a NASA satellite show.

These rare types of…Read More »





wispy blue-white clouds are called noctilucent clouds, or NLCs. They form when water molecules freeze around "meteor smoke" close to the edge of space, typically about 50 to 53 miles (80 and 85 kilometers) above Earth's surface — so high that they can reflect light after the sun sets.

[Full Story: Night-Shining Clouds Show Up Early Over South Pole]   Less «
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