Found: A Batch of DNA Molecules That Seem To Have Originated in Space

In what appears to be seriously big news from a team of NASA-funded researchers, scientists have found evidence that some building blocks of DNA--including two of the four nucleobases that make up our genetic code--found in meteorites were created in space, lending credence to the idea that life is not homegrown but was seeded here by asteroids, meteorites, or comets sometime in Earth’s early lifetime.

This is big news, of course, because if the ingredients for life were brought here from some external source, there’s always the possibility that the same thing has happened elsewhere in the universe--possibly many times over.

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