Ask Ethan: Why don’t we shoot Earth’s garbage into the Sun?
Ethan Siegel
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What’s the current cost per pound to get cargo to Mars?

Elon Musk wants to colonize Mars, which I think is a poor proposition. In addition to getting out of earth orbit, you need to safely accelerate and decelerate to achieve Martian orbit then safely descend to the surface. That’s gotta be expensive.

I think colonization of Mars a poor prospect. There is nothing on Mars of any value which we don’t possess here on earth. There is no available food, water, nor atmosphere on Mars to sustain life. There are no concentrated raw materials available on Mars. Almost all terrestrial mineral resources are concentrated by water (gold, bauxite, iron, etc). Finally there is no available energy.

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