Today’s buzzword is “noctilucent”…

(photo credit: Jan Koeman, Kloetinge, the Netherlands, courtesy of spaceweather)… as in “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. They’re called noctilucent or “night-shining” clouds (NLCs). Whatever they are, they’re beautiful, and this week’s sightings in Europe mark the beginning of the 2005 noctilucent cloud season. Northern summer is the best time to spot them.” Check out spaceweather.com’s Noctilucent Cloud Gallery!