Chp. 5 in Beatty and Chaikin) Physical Characteristics Rotational Period 24h37m (similar to Earth) Obliquity 24 degrees (similar to Earth) Atmosphere 0.007 bar (surface pressure 0.7% of Earth's) Mostly CO 2 No free oxygen Traces of water vapor Surface Temperature 150-300K Magnetic Field Negligible Bulk Density 3.9g/cm 3 Between that of Earth and Moon (FeS core?)
(No free oxygen; Traces; of water vapor Surface Temperature 150-300K Magnetic Field Negligible Bulk Density 3.9g/cm 3 Between that of Earth and Moon (FeS core)
No free oxygen
Traces
of water vapor Surface Temperature 150-300K Magnetic Field Negligible Bulk Density 3.9g/cm 3 Between that of Earth and Moon (FeS core