We keep finding the raw material of DNA in asteroids–what's it telling us?

6 hours ago

A paper announced the discovery of all four DNA bases on an asteroid, but this finding is not new as similar results date back to 2011.
The new study is significant for solving a previous mystery: earlier studies failed to detect these bases in the Ryugu asteroid despite their presence in other samples.
The research provides insights into how these DNA bases formed on asteroids, which is crucial for understanding the origins of life's raw materials on Earth.
DNA and RNA share a similar structure, including a backbone made of alternating sugars and phosphates, with bases attached to the sugars.
The four bases (A, T, C, G in DNA; A, U, C, G in RNA) give nucleic acids their genetic identity, and their order carries genetic information.
It is hypothesized that before life evolved, the order of bases in RNA molecules influenced the chemical reactions they could catalyze.

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