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marze
on March 20, 2012
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SpaceX CEO claims he can send you on a round-trip ...
Water works better. Heavy elements like lead splatter when hit by high energy particles and generate secondary radiation.
The idea is good, most mars plans include a shelter with a water or rocket fuel shield.
csulok
on March 20, 2012
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why not a magnetic shield? like what earth has
Sanddancer
on March 20, 2012
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Ease of operation and construction. You're going to need water and rocket fuel regardless, having it do double duty is a lot cheaper and easier.
Zaak
on March 20, 2012
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http://www.minimagnetosphere.rl.ac.uk/
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The idea is good, most mars plans include a shelter with a water or rocket fuel shield.