Noctilucent Clouds Perform Delicate Dance for NASA’s Balloon-Cam

Noctilucent clouds, or PMC's, form high in the atmosphere above the poles. NASA launched a five-day balloon mission to observe and photograph them. Image: NASA’s Goddard Space Flight Center/Joy Ng

Noctilucent clouds are one of the atmosphere’s most ethereal natural wonders. They form high in the mesosphere, about 80 km (50 mi) above the Earth’s surface, and are rarely seen. In July, 2018, NASA launched a five-day balloon mission, called PMC (Polar Mesospheric Clouds) Turbo, to observe them and photograph them.

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