Wikiquote:Quote of the day/November 9, 2011

KT-impact.jpg   Comet-sym.svg

Since, in the long run, every planetary society will be endangered by impacts from space, every surviving civilization is obliged to become spacefaring — not because of exploratory or romantic zeal, but for the most practical reason imaginable: staying alive.

~ Carl Sagan ~

Pioneer plaque (transparent).svg

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