Technicians watch as the fairing halves come together around NASA's Lunar Reconnaissance Orbiter.

At Astrotech Space Operations Facility in Titusville, Fla., technicians closely watch as the fairing halves come together around NASA's Lunar Reconnaissance Orbiter, or LRO, and and NASA's Lunar Crater Observation and Sensing Satellite, known as LCROSS. The fairing is a molded structure that fits flush with the outside surface of the rocket and forms an aerodynamically smooth nose cone, protecting the spacecraft during launch and ascent.The LRO includes five instruments: DIVINER, LAMP, LEND, LOLA and LROC. They will be launched aboard an Atlas V/Centaur rocket no earlier than June 17 from Launch Complex-41 on Cape Canaveral Air Force Station in Florida. Photo credit: NASA/Jack Pfaller