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All five genetic letters found in ancient asteroid Ryugu

So, scientists have detected all five nucleobases that make up the genetic letters of DNA and RNA in pristine samples from asteroid Ryugu. Japan’s Hayabusa2 mission brought the samples back to Earth in 2020, where researchers carefully analysed them to avoid contamination. The discovery adds to evidence from other asteroids that these ingredients for life may have formed throughout the early Solar System. And here's the exciting possibility: asteroids may have delivered some of this ancient chemistry to early Earth.
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