Lunar Reconnaissance Orbiter: 4 Years & Counting

Innovative NASA Moon Orbiter Completes 3 Years Of Its Extended Science Mission, Additional Extension Likely As Probe Has Delivered Unprecedented Amount Of Data / Images; LRO Has Orbited Moon Over 18,000 Times, Traveling Over 200M Km, Produced Over 434 Terabytes Of Data, Laser Altimeter Conducted Over 6B Topographic Measurements; LRO Expected To Continue To Send Back Data Until Oct 2014, Though Additional 2 Years Possible

Image Credit: NASA