Helium, Hydrogen, oxygen. Sodium, calcium, potassium, and water vapor 3) the atmosphere is blown away by the Sun's solar winds C. Moons 1) No moons due to the planets low gravity D. Mercury is about 1/3 the size of Earth (38 %) E. It is .38 AU's from the sun F. It takes Mercury 88 Earth days to orbit the Sun, and I day on Mercury is 58 days and 15 hours G. Has dark spots by the poles indicating there may have been water there at some point, and there…
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