A Maine museum is offering $25,000 to anyone who returns a piece of a meteorite whose strewn field is likely in the northern part of the state. The Maine Mineral and Gem Museum in Bethel has one of the largest collections of meteorites anywhere, its founder says.

"Our museum has probably the rarest collection of meteorites in the world in this little town in western Maine," museum founder Larry Stifler said. "One of the reasons we've had worldwide publicity is, for example, more than half of all the known lunar meteorites in the entire world are in this little museum."

Stifler explained where meteorites come from, how difficult it is to find pieces of them, and what the odds are of being struck by a space rock.