Strange Clouds at the Edge of Space - NASA Science News for August 25, 2008
High above Earth, astronauts on board the International Space Station have taken one of the best-ever photos of electric-blue noctilucent clouds. Their image, featured in today's story from Science@NASA, highlights a growing mystery: Where do these clouds come from and why
are they spreading?
FULL STORY at
http://science.nasa.gov/
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