Snack-O-Saurus
Found this on here a long time ago. But it seems pretty relevant at this point.
How Saturday’s ‘Supermoon’ Will Affect Us
Astronomers call it perigee-syzygy; the rest of us call it “supermoon.” Either way, the alignment of the sun and moon will coincide with the moon’s closest approach to Earth on Saturday (May 5), resulting in the biggest full moon of the year. But don’t worry, it won’t break Earth.
Saturday’s supermoon will be especially super. Richard Nolle, the astrologer who coined the term “supermoon,” defined it as a full moon that occurs within 12 hours of lunar perigee, or the point in the moon’s slightly non-circular monthly orbit when it swings closest to our planet. On Saturday, the timing of the two events will be almost perfect: the moon will reach its perigee distance of 221,802 miles (356,955 kilometers) — the closest lunar perigee of 2012, in fact — at 11:34 p.m. Eastern Time, and it will fall in line with the sun (thereby becoming full) just one minute later.
Tubular Cloud Rolls Toward Horizon
A photo taken near Brazil captures a rare and beautiful “roll cloud,” a tubular cloud that seems to tumble across the sky.
Roll clouds are a type of arcus cloud, which is a category of low cloud formations. Their more common cousin is the shelf cloud, often seen on the leading edges of thunderstorms. Roll clouds sometimes form along with storms, too, born out of the storm’s downdraft. Sinking cold air causes warm, moist air on the planet’s surface to climb to higher altitudes, where the moisture condenses into cloud form. Winds from the storm “roll” the cloud parallel to the horizon, creating an effect that looks much like a horizontal tornado. Unlike shelf clouds, rolls clouds are completely detached from the bulk of the storm. (Gallery of Curious Clouds)
photo by Capt. Andreas M. van der Wurff
