“…Maybe the reason civilizations don’t get around to colonizing other planets is that there’s a narrow window when they have the tools, population and will to do so, and the window usually closes on them. “In 1970 everyone figured we’d have humans on Mars by now, but we haven’t taken the opportunity,…We should it do soon, because colonizing other worlds is our best chance to hedge our bets and improve the survival prospects of our species. Sooner or later something will get us if we stay on one planet. By the time we’re in trouble and wish we had that colony on Mars, it may be too late.”

You could argue that he’s being too pessimistic about space exploration…” Full Slice

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