It Came from Outer Space: "Prebiotic molecules came from extraterrestrial sources"

Could life on Earth as we know it have come from outer space? New research from Lawrence Livermore National Laboratory scientists shows that comets that crashed into Earth millions of years ago could have produced amino acids - the building blocks of life. Amino acids are critical to life and serve as the building blocks of proteins, which are linear chains of amino acids.
“There’s a possibility that the production or delivery of prebiotic molecules came from extraterrestrial sources,” Goldman said. “On early Earth, we know that there was a heavy bombardment of comets and asteroids delivering up to several orders of magnitude greater mass of organics than what likely was already here.

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