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Near-Earth asteroid whose sample, returned to Earth in 2023, was reported to contain all five DNA and RNA nucleobases and 14 of 20 biological amino acids.
No evidence-backed relationships are recorded.
An ETH Zurich lab measured iron, titanium and chromium in its share of the OSIRIS-REx return and found the same dust reservoir that produced Ryugu and the rare CI meteorites, a composition matching neither the inner nor the outer solar system.
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A preprint from University College London's Lewis Pinault and colleagues argues the airless Moon has archived interstellar dust for billions of years, and puts the sample needed to test that idea at one cubic meter of regolith.
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Kyoto University's analysis of two grains puts nitrogen chemistry in the last fluid to dry inside Ryugu's parent body, and the team is careful to say it inferred that sequence rather than watched it happen.
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Paul Sanchez's group at Colorado Boulder pulled pairs of simulated boulders apart until the fine grains cementing them gave way, and found that grain angularity belongs in the strength law alongside grain size.
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A Live Science tally puts the off-Earth inventory at all five DNA and RNA nucleobases and 14 of 20 biological amino acids. The gaps are now the interesting part.
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