posted on Feb, 24 2003 @ 05:50 AM
February 18, 2003: They hover on the edge of space. Thin, wispy clouds, glowing electric blue. Some scientists think they're seeded by space dust.
Others suspect they're a telltale sign of global warming.
Astronauts onboard the International Space Station have been observing electric blue "noctilucent" clouds from Earth-orbit.
Sky watchers on Earth have seen them, too, glowing in the night sky after sunset, although the view from Earth-orbit is better. Pettit estimated the
height of the noctilucent clouds he saw at 80 to 100 km ... "literally on the fringes of space."
4) the second shall shatter the philistines