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Mars

  • Location: 1.52 AU

  • Size: About 1/2 the diameter of Earth

  • Atmosphere: Thin - 1/100 that of Earth at surface. Mostly CO2, occasional water ice clouds. Wind erosion.

  • Temperature: -220° to 70° F (Average: -60° F)

  • Volcanoes: Some old ones, all extinct now

  • Water: Probably very little, only ice. Used to be much more in liquid form, probably had oceans