Paul Markham

Mars One estimates the cost of bringing the first four people to Mars at US$ 6 billion. This is the cost of all the hardware combined, plus the operational expenditures, plus margins. For every next manned mission including hardware and operations, Mars One estimates the costs at US$ 4 billion.

At $1400 per gram, one hundred kilograms (220 pounds) of helium-3 would be worth about $140 million. One hundred kilograms constitutes more than enough fuel to potentially power a 1000 megawatt electric plant for a year when fused with deuterium, the terrestrially abundant heavy isotope of hydrogen.

So if they can mine, extract, bring back a ton of helium-3 they can't break even.

Like I said, what's on Mars to justify spending 4-6 $billion a trip?

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