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SlideshowReport

Telescopic View of the Lunar Surface

Description
Planets are composed of
Gases
Hydrogen
Helium
Rocks
Silicate minerals
Metallic iron

Planets are composed of
Ices
Ammonia (NH3)
Methane (CH4)
Carbon dioxide (CO2)
Water (H2O)

Due to their surface gravities, Venus and Earth retained atmospheric gases
Due to frigid temperatures, the Jovian planets contain a high percentage of ices

Diameter of 3475 kilometers (2150 miles) is unusually large compared to its parent planet
Density
3.3 times that of water
Comparable to Earth’s crustal rocks
Perhaps the Moon has a small iron core
Gravitational attraction is one-sixth of Earth’s
No atmosphere
Tectonics no longer active
Surface is bombarded by micrometeorites from space which gradually makes the landscape smooth
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