Costing me five points to ask this, but enquiring minds, etc.,.
Earth's atmosphere remains in place mainly due to the planet's gravity. By itself though would that be enough to prevent the solar wind from sweeping it away given the billions of years involved? I'm assuming that to some extent Earth's magnetic field helps protect the atmosphere by deflecting the solar wind.
If the above assumptions are correct, how does Venus retain its atmosphere when it has virtually no magnetic field. At first I thought that its atmosphere was significantly denser than ours, but that's not the case.
Whaddaya think....?
2007-04-05
18:53:43
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8 answers
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asked by
Chug-a-Lug
7