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Comment Re:Why? (Score 1) 248

Wouldn't it be a lot easier to send lots of stuff to Mars if you could refuel on the Moon?

Apart from being further away, name one practical difference between technology required to live on Mars instead of the Moon?

I suppose there is the extra radiation shielding required, as the Moon is protected by Earth's magnetosphere and Mars has none.

Comment Re:Sapphire (Score 3, Insightful) 83

Yes, then you get a compound, that no longer has properties of the metal it is made from, like being electrically conductive. Sapphire is also ~20 less thermally conductive than aluminium too. You need to add zinc to make it conductive, which makes it less transparent.

Conductive metal would be good for LED's and solar panels if they out-perform indium tin oxide

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