Life came to earth on a comet?
…or on a block of rock and ice that spends billions of years floating through space at near absolute zero until it finally blunders into a solar system and plummets into a planet and explodes with the heat of thousands of nuclear weapons? 😀
That is exactly what a great number of physicists think how life came to earth, all the water on earth came here on comets and you need liquid water for life:D
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