Lunar Helium Found

NASA's Lunar Reconnaissance Orbiter has detected helium in the wispy atmosphere of the Moon.   So far, researchers have been able to establish the helium is associated with the Moon, as opposed to simply being in the background space.  The next step is to determine whether the helium came from inside the Moon, or from outside, on the solar wind.

The discovery supports a measurement garnered by a science package deployed on the lunar surface by Apollo 17 astronauts forty years ago.