A space rock with a peculiar orbit may be a floating piece of the moon. Scientists had thought moon rocks weren't able to stay in orbit after a meteorite blast. AdvertisementAdvertisementA chunk of the moon that may have broken away from the lunar surface millions of years ago appears to be orbiting our planet. NASAThe finding could change where we think potentially dangerous space rocks come fromScientists are constantly monitoring the skies for potentially dangerous space rocks — but they are very aware of their limitations. Space rocks like these also provide rare snapshots into the past of our solar system.

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Persons: —, Paul Chodas, Jose Daniel Castro, Cisneros, Castro Cisneros Organizations: Service, University of Arizona, NASA, Jet Propulsion Laboratory, JPL, Caltech