Works Cited
Hecht,
Irion, Robert, Liu, Charles, and Neil de Grasse Tyson. 2002. The Moon’s Violent Birth.
Natural History 109, no.1: 20.
Meissner, Rolf.
2002. The Little Book of
Planet Earth.
Moore, Patrick. 1976.
New Guide to the Moon.
Narlikar,Jayant V.
1982. The Lighter Side of
Gravity.
Freeman and Company.
Time-Life Books. 1991. Moons and Rings: 1991.
Books.