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| | Planatary Classifications |
 | | Generally considered desert, or savannah-like planets they usually involve wide plateaus of steppe, and vast barren plains, but north and south of the equatorial regions provide the best locations for life, but temperatures can rise well in the 50's ºC during the summer months, and can drop sharply during the night. |
 | | Earth is a Class -M planet, for, along with an oxygen rich atmosphere, vast quantities of water, organic life in many forms, it is the ideal location and environment for Humanoid life to flourish. |
 | | Such planets are similar to Class -M's geological constituents in many ways, though land masses are either non-existent or are limited to few small islands where oceanic mountain ranges break the surface. |
| www.trekmania.net /science/planets.htm (1225 words) |
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