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| | Definition of Moon - Biocrawler (Site not responding. Last check: 2007-10-29) |
 | | The other side, the "far side", mostly cannot be seen from Earth, except for small portions near the limb which can be seen occasionally due to libration. |
 | | This crater is located on the far side, near the south pole, and is some 2,240 km in diameter, and 13 km in depth. |
 | | The far side of the Moon remained completely unknown until the Luna 3 probe in 1959, and was extensively mapped by the Lunar Orbiter program in the 1960s. |
| www.biocrawler.com /encyclopedia/Moon (4584 words) |
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