4th planet from the Sun
Average distance from the Sun 228 million km
Mars has the tallest mountain in the Solar System
Olympus Mons is 3 times the height of Everest
Atmosphere: 95.32% Carbon dioxide, 2.7% Nitrogen, 1.6% Argon, 0.13% Oxygen
Mars has polar ice caps
Temperatures of -140°C
Elsewhere temperatures ...
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