Scientists say pictures of the far side of the moon taken by the spacecraft Galileo will help fill a blank spot on the map of the planet.

The pictures, taken as Galileo sped past the moon and Earth on its six-year voyage to Jupiter, also should reveal more about the mineral content of the moon's crust, scientists said Monday."We're actually doing some new observation," said James Head, a member of Galileo's imaging team at NASA's Jet Propulsion Laboratory.