View Full Version : How Magnetic Tornadoes Might Regenerate Mercury’s Atmosphere

2009-Jun-03, 11:20 PM
Compared to Earth, Mercury doesn’t have much of an atmosphere.* The smallest rocky planet has weak surface gravity, only 38% that of Earth.* And the scorching-hot daytime surface temperatures of 800 degrees Fahrenheit (approximately 450 degrees Celsius) should have boiled away any trace of Mercury’s atmosphere long ago.* Yet recent flybys of the MESSENGER spacecraft [...]

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