Sunday, July 11, 2004
Mysterious Clouds that Shine at Night
I just learned of a strange new thing called a noctilucent cloud; evidently they are an enigma and scientists don't know much about them. Check out these pictures; note that these are all taken at night:
This is a trip: "There was a time, not long ago, when people saw blue moons almost every night. Full moons, half moons, crescent moons - they were all blue, except some nights when they were green. The time was 1883, the year an Indonesian volcano named Krakatoa exploded. Scientists liken the blast to a 100-megaton nuclear bomb. Fully 600 km away, people heard the noise as loud as a cannon shot. Plumes of ash rose to the very top of Earth's atmosphere. And the moon turned blue. Krakatoa's ash is the reason. Some of the ash-clouds were filled with particles about 1 micron (one millionth of a meter) wide - the right size to strongly scatter red light, while allowing other colors to pass. White moonbeams shining through the clouds emerged blue, and sometimes green."
Scaled Aims For Late September X Flights
Scaled Aims For Late September X Flights: "During an interview on US news network MSNBC this week, SpaceShipOne pilot Mike Melvill told Deborah Norville that Scaled Composites is planning to shortly give the required 60 days notice that it will fly back to back X Prize qualified flights in an attempt to win the $10 million X Prize." The race is on!
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