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We've seen some gorgeous images (and some videos) of aurora borealis on the blue, but have you seen aurora borealis with a full moon? "The aurora has to be bright and strong to be visible on the blue sky created by the moon. This does not happen so very often, which makes pictures like these extremely rare." [more inside]
posted by filthy light thief on Sep 21, 2011 - 14 comments

The green flash isn't quite the light show that some might imagine, but is still impressive. But sunsets aren't alone in producing the green flash - the flash can also appear above the moon. Up on Cerro Paranal in northern Chile, ESO Photo Ambassador Gerhard Hüdepohl has captured a very clear example of the a green flash above the moon. [more inside]
posted by filthy light thief on Apr 28, 2011 - 18 comments

On October 9th, NASA spacecraft will run into the moon, and on purpose. The Lunar Crater Observation and Sensing Satellite (LCROSS) and its rocket's Centaur upper stage will impact the moon, with the goal of sending some of the (possibly present) ice above the lunar surface. Once out of the eternal shade of the moon's south pole, sunlight will break the ice up into H+ and OH- molecules, which can be detected by the Lunar Reconnaissance Orbiter (LRO). The initial impact site was the crater Cabeus A, but the target was later changed to Cabeus (proper), selected for highest hydrogen concentrations with the greatest level of certainty, and for the high-contrast back drop to detect ejecta and vapor measurements. NASA has provided guides for amateur observations of the impact, a facebook group, and a Twitter feed so you don't miss the moment.
posted by filthy light thief on Oct 8, 2009 - 53 comments