Origins of the Moon

Theories of the Origin of the Moon The Moon is the only natural satellite of Earth. The distance from Earth is about 384,400km with a diameter of 3476km and a mass of 7.35*1022kg. Through history it has had many names: Called Luna by the Romans, Selene and Artemis by the Greeks. And of course, has been known through prehistoric times. It is the second brightest object in the sky after the Sun. Due to its …

…Center for Astrophysics, Cambridge MA 02138, PLANETARY GEOSCIENCES-1988, NASA SP-498 EARTH'S ROTATION RATE MAY BE DUE TO EARLY COLLISIONS, Paula Cleggett-Haleim, Michael Mewhinney, Ames Research Center, Mountain View, Calif. RELEASE: 93-012 Hartmann, W. K. 1969. “Terrestrial, Lunar, and Interplanetary Rock Fragmentation.” Hartmann, W. K. 1977. “Large Planetesimals in the Early Solar System.” 1 "Landmarks of the Moon," Microsoft® Encarta® 96 Encyclopedia. © 1993-1995 Microsoft Corporation. All rights reserved. 2 "Characteristics of the Moon," Microsoft® Encarta® 96 Encyclopedia. © 1993-1995 Microsoft Corporation. All rights reserved.