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The magnetic field actually has little to do with atmoshpere. Venus has no magnetic field (it's core has also stopped spinning) and it is closer to the sun, meaning that it experiences and even stronger solar wind than Mars, yet it's atmosphere is 80 times heavier than ours. That is because of it's extremely slow spin (1 Venus day = 243 Earth days), it doesn't have the centerfugal force flinging the atmosphere away.
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No, that's because it's a lot heavier, and thus harder to knock away.
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"Moreover, I am cognizant of the interrelatedness of all communities and states...Injustice anywhere is a threat to justice everywhere. We are caught in an inescapable network of mutuality, tied in a single garment of destiny. Whatever affects one directly, affects all indirectly. Never again can we afford to live with the narrow, provincial "outside agitator" idea. Anyone who lives inside the United States can never be considered an outsider anywhere within its bounds."
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