http://www.space.com/
http://www.space.com/scienceastronomy/080901-mm-night-shining.html
I live in an area where I can see these things since I am far enough to the north.
See also
http://www.atoptics.co.uk
for more on noctilucent clouds, nacreous clouds, aurorae and other atmospheric optical phenomenae. Some excellent photos and explanations !
SPACE CLOUDS
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See also
http://www.atoptics.co.uk
for more on noctilucent clouds, nacreous clouds, aurorae and other atmospheric optical phenomenae. Some excellent photos and explanations !