NASA probes reach moon for gravity-mapping mission

CAPE CANAVERAL: Two robotic probes began orbiting the moon Sunday in preparation for an unprecedented mission to map the lunar interior. NASA's twin Gravity Recovery And Interior Laboratory, or...

AFP

January 03, 2012

NASA probes reach moon for gravity-mapping mission

CAPE CANAVERAL: Two robotic probes began orbiting the moon Sunday in preparation for an unprecedented mission to map the lunar interior.

NASA's twin Gravity Recovery And Interior Laboratory, or GRAIL, spacecraft wrapped up 2.6-million-mile journey to put themselves into lunar orbit on Saturday and Sunday.