As part of Saturday’s International Observe the Moon Night, NASA fired a ton of lasers at the moon. They weren’t declaring war on alien life form or trying to melt the cheese – instead they were tracking the Lunar Reconnaissance Orbiter.
NASA can locate the orbiter by shooting 28 laser beams every second at it, and while it's moving at 5800km/h, and is 400,000km away from Earth, it's still not too fast for NASA's humble laser unit at the Goddard Space Flight Center's Laser Ranging Facility over in Greenbelt, Maryland.
This particular photo was shot by photographer Debbie McCallum, who was allowed entry to the facility as NASA had opened it up for one night only. See other photos from the night here. [Space via io9]