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Mercury – It is 36 million miles or 0.39 au from the Sun. Mercury is 3,031 miles across; it takes 59 days to rotate once. A revolution takes 88 days. Mercury has no satellites. The high temperature for Mercury is 800 degrees F and the low temperature for Mercury is -350 degrees F. Mercury has no atmosphere; the planet is rock-like, has craters and is made of iron.
Venus - It is 67 million miles or 0.7 au from the Sun. Venus is 7,521 miles across. It takes 243 days going backwards to rotate once and, a revolution takes 224 days. Venus has no moons, the high tempature for Venus is 891 degrees F and the low is 837 degrees F. Venus has a very thick atmosphere that has high pressure (90x's)and it is very windy with winds at 200+ miles per hour. Earth is Venus's twin in size but not in anything else. Venus is the evening star or the morning star, and is the hottest planet. It is mostly carbon dioxide, sulfure, acid rain, and ammonia.
Article posted September 26, 2008 at 10:13 AM •
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