We keep finding the raw material of DNA in asteroids-what's it telling us?
Ars Technica • • science
Key Points:
- A recent paper confirmed the presence of all four DNA bases on the asteroid Ryugu, building on similar findings from meteorites and asteroid samples dating back to 2011, but earlier tests had initially failed to detect most bases on Ryugu.
- The study used more sensitive testing and larger sample sizes to detect all five nucleic acid bases (including those specific to DNA and RNA) on Ryugu, aligning it with other asteroids known to carry these critical biochemical precursors.
- Researchers found a correlation between the relative levels of purine and pyrimidine bases and the amount of ammonia in asteroids, suggesting insights into the chemical reactions that produce nucleotides in space.
- Understanding nucleotide formation in asteroids helps constrain the types of prebiotic
