Moon: May 2013

NASA's Gravity Recovery and Interior Laboratory (GRAIL) mission has uncovered the origin of massive invisible regions that make the moon's gravity uneven, a phenomenon that affects the operations of lunar-orbiting spacecraft.

The water found on the moon, like that on Earth, came from small meteorites called carbonaceous chondrites in the first 100 million years or so after the solar system formed, researchers from Brown and Case Western Reserve universities and Carnegie Institution of Washington have found.

Technicians at NASA's Ames Research Center, Moffett Field, Calif., install a heater cage around NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) observatory sitting in the base of the thermal-vacuum chamber, in order to simulate the hot and cold extremes the observatory will experience during the mission.

A detailed comparison is made of results from the Lunar Prospector Neutron Spectrometer (LPNS) and the Lunar Exploration Neutron Detector Collimated Sensors for EpiThermal Neutrons (LEND CSETN).