"The fact that this chain of life existed [at volcanic vents on the seafloor] in the black cold of the deep sea and was utterly independent of sunlight—previously thought to be the font of all Earth's life—has startling ramifications. If life could flourish there, nurtured by a complex chemical process based on geothermal heat, then life could exist under similar conditions on planets far removed from the nurturing light of our parent star, the Sun."
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Original Language: English
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Sources
Robert Ballard, in Peter D. Ward, Donald Brownlee, Rare Earth: Why Complex Life is Uncommon in the Universe (Springer, 2003), p. 1
https://en.wikiquote.org/wiki/Planet
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Planet
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