On colonizing another planet: I agree, along with Carl Sagan, that we should eventually become a two planet species. Life is too precious to place on a single planet. But I also think we should explore new ways to drive down the cost of space travel. instead of costly booster rockets, maybe we should think of laser/microwave driven rockets, or space elevators. Until then, the cost of space exploration will limit our ability to explore the universe. I think a colony in space will take much longer than sci fiction writers think. It costs $10,000 to put a pound of anything into near earth orbit. That is your weight in gold. It costs about $100,000 a pound to put you on the moon. And it costs $1,000,000 a pound to put you on Mars. -Michio Kaku
Posted on: Thu, 24 Apr 2014 17:33:53 +0000
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