... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Moon . ... Moon Maps . ... Ancient lunar dynamo may explain magnetized Moon rocks . Recent analyses of Moon rocks, as well as orbital measurements of the magnetization of the lunar crust, suggest that there was a strong, long-lived magnetic field on the Moon early in its history. ... Rocks can become magnetized from the shock of an impact, a mechanism some scientists have proposed to explain the magnetization of lunar samples. ...