Quote:
|
Originally Posted by Paradox
University of Colorado instruments to launch on NASA cloud mission April 25:
|
I'm looking forward to the results of AIM. Noctilucents are amazing things to see, I was totally gobsmacked the first time I saw one.
I attended a lecture by Ken Kennedy (a British astronomer) about noctilucents recently. What amazes him is that, despite being so awesome,
there is no historical record of them before 1885. Man has been recording aurora, comets, meteors and eclipses throughout recorded history, but not noctilucents. If you've ever seen one, you'll appreciate why this is so surprising.
They form 85 Km above the earth, where it's -150°C and (in theory) there shouldn't be anything like enough water vapour up there to produce clouds.
Fascinating.
