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Hayabusa2’s Ryugu Samples Contain All Five DNA/RNA Bases

A JAMSTEC-led paper in Nature Astronomy echoes Bennu findings and strengthens the case that carbon-rich asteroids delivered prebiotic molecules to early Earth.

Overview

  • Researchers report the full suite of nucleobases in Ryugu material returned by JAXA’s Hayabusa2 mission.
  • About 20 milligrams of sand were processed using water and hydrochloric acid to extract organic compounds.
  • Amino acids and urea were also identified in the same samples, indicating a diverse organic inventory.
  • Comparable molecules have been detected in NASA’s Bennu samples and in certain meteorites, reducing the likelihood of terrestrial contamination.
  • The peer-reviewed study, published March 17, interprets the organics as products of early solar-system chemistry that could have been supplied to Earth.