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All Five DNA and RNA Building Blocks Found in Asteroid Ryugu Sample
Japanese researchers confirmed all five nucleobases in Ryugu samples, supporting widespread presence of life's building blocks on carbon-rich asteroids, as published in Nature Astronomy.
- Laboratory analyses of Ryugu samples show all five nucleobases, as reported in Nature Astronomy, with samples returned by JAXA's Hayabusa2 mission.
- To probe origins, the team compared Ryugu with Bennu, Murchison, and Orgueil to map nucleobase abundance and study carbon-rich asteroids’ role in early Earth’s prebiotic chemistry.
- Chemical analysis showed Ryugu had roughly equal amounts of purines and pyrimidines, notably detecting thymine and contrasting with Bennu and meteorites skewed toward one family.
- Implications include support for the RNA World hypothesis, as the finding strengthens the idea that ingredients for life may be common in the Solar System and could have been delivered to early Earth.
- With Ryugu now analyzed, researchers note this makes two sampled carbonaceous asteroids with full nucleobase sets, filling Ryugu's earlier gap after Bennu's full-set discovery.
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Total News Sources44
Leaning Left9Leaning Right4Center11Last UpdatedBias Distribution46% Center
Bias Distribution
- 46% of the sources are Center
46% Center
L 37%
C 46%
R 17%
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