"NASA will hold a briefing about two upcoming lunar missions scheduled to launch in June that will begin a journey to better understand the moon. A briefing with members of the mission and science teams will be held Thursday, May 21, at 4 p.m. EDT, in the James E. Webb Memorial Auditorium at NASA Headquarters, 300 E Street, SW, in Washington. The briefing will air live on NASA Television and the agency's Web site.
The Lunar Reconnaissance Orbiter, or LRO, focuses on the selection of safe landing sites, identification of lunar resources and the study of how lunar radiation will affect humans. The Lunar Crater Observation and Sensing Satellite, or LCROSS, will impact the moon twice in its search for water ice."