April 27, 2007, Newsletter Issue #72: Hot, hotter, hottest

Tip of the Week

Which planet is hotter, Mercury or Venus? Believe it or not, though Venus is twice as far from the Sun as Mercury, it is more than six hundred degrees (C) hotter than the closest planet to the sun. Why? Because Venus has an atmosphere, and that atmosphere is composed of Carbon dioxide, the same gas responsible for the greenhouse effect here on Earth. Mercury has no atmosphere.

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