All 5 genetic “letters” of DNA and RNA discovered in a 4.5-billion-year-old asteroid
www.sciencedaily.com
Scientists have discovered all five essential nucleobases used in DNA and RNA in pristine samples from asteroid Ryugu, revealing that key ingredients for life existed in space billions of years ago. The remarkable finding adds to growing evidence from other asteroids and meteorites that these molecules were widespread throughout the early Solar System.

tldr: five main nucleobases are adenine and guanine (known as purines), as well as cytosine, thymine and uracil (known as pyrimidines) on something older than earth

cross-posted from: https://sopuli.xyz/post/54208679

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