All articles tagged with #ryugu
Researchers analyzing asteroid Ryugu samples discovered all five canonical nucleobases—adenine, cytosine, guanine, thymine, and uracil—in roughly equal amounts, the first time these DNA/RNA letters have been found together in a single extraterrestrial material, reinforcing the idea that prebiotic molecules were common in the early solar system and could have been delivered to Earth by meteorites.
Analysis of Ryugu samples from JAXA’s Hayabusa2 mission finds all five nucleobases—uracil, adenine, guanine, cytosine, and thymine—the DNA/RNA building blocks, suggesting primitive asteroids can form and preserve prebiotic molecules and potentially deliver them to Earth, though this does not imply life existed on Ryugu; similar organics were found in Bennu samples, underscoring the ubiquity of these building blocks in the solar system.
Researchers analyzing asteroid Ryugu samples found the five DNA/RNA nucleobases (adenine, guanine, cytosine, thymine, uracil) plus ammonia, suggesting primitive solar-system chemistry could seed life's ingredients on Earth; a German study shows a bacterial consortium can degrade several phthalate esters used in plastics via cross-feeding; and new Hubble images captured the breakup of Comet C/2025 K1 (ATLAS) as it left the solar system, with Engadget recapping other notable science stories from the week.
A Nature Astronomy study confirms all five DNA/RNA nucleobases—adenine, guanine, cytosine, thymine, and uracil—are present in Ryugu asteroid samples, suggesting primitive space rocks can carry the building blocks of life and revealing a correlation with ammonia that points to a novel nucleobase formation pathway.
Analysis of asteroid Ryugu samples from JAXA’s Hayabusa2 mission revealed a complete set of canonical nucleobases (adenine, guanine, cytosine, thymine, uracil), suggesting carbonaceous asteroids can carry DNA/RNA building blocks and may contribute to prebiotic chemistry across the solar system; findings align with previous Bennu results and meteorites, though they do not indicate life on Ryugu.
New analysis of asteroid Ryugu samples detected all five canonical nucleobases—adenine, guanine, cytosine, thymine and uracil—showing DNA/RNA building blocks may be widespread in the solar system and could have seeded Earth’s prebiotic chemistry, with Bennu and meteorites providing supporting comparisons.
Two samples from asteroid Ryugu returned by JAXA’s Hayabusa2 contain the five nucleobases adenine, guanine, cytosine, thymine and uracil—the building blocks of DNA and RNA. The find suggests these compounds can form in space without life and may have been distributed across the early solar system, with Ryugu showing different base concentrations than Bennu and meteorites, hinting at diverse formation histories and a wide cosmic availability of life's chemical ingredients.
New analysis of Ryugu asteroid samples finds all five canonical nucleobases—adenine, cytosine, guanine, thymine, and uracil—in both samples, completing the set previously observed on Bennu and suggesting carbon-rich asteroids could have delivered prebiotic molecules to early Earth.
A Nature Astronomy study analyzing Hayabusa2’s Ryugu samples found all five nucleobases—the DNA/RNA building blocks—supporting the idea that asteroids delivered the ingredients for life to early Earth. The researchers note Ryugu has roughly equal amounts of purine and pyrimidine bases, unlike some meteorites, and that ammonia concentration may influence nucleobase formation, suggesting such molecules could have been more widespread in the early solar system.
Two Ryugu aggregates contain all five canonical nucleobases (adenine, guanine, cytosine, thymine, uracil) plus related N-heterocycles, supporting extraterrestrial delivery of basic life-building blocks. The study finds purine/pyrimidine ratios that correlate with ammonia levels and differ from Bennu, Orgueil, and Murchison, suggesting different parent-body chemistries but a shared formation pathway for nucleobases on primitive Solar System bodies and implications for Earth's prebiotic inventory.
Scientists analyzing samples from asteroid Ryugu found evidence that liquid water once flowed through its interior, suggesting a more prolonged presence of water in asteroids than previously thought, which could have implications for Earth's water origins.
Scientists found evidence suggesting that the asteroid Ryugu once contained flowing water billions of years after its formation, challenging previous beliefs about water's longevity in space and implying that water-rich asteroids could have contributed significantly to Earth's oceans.
New research suggests that the asteroid Ryugu may have once contained flowing liquid water billions of years after its formation, challenging previous beliefs that water only existed in asteroids during the early solar system. Microscopic analysis of samples indicates that water persisted much longer than expected, possibly due to a collision heating the asteroid, which has implications for understanding how Earth and other planets acquired water.
Scientists discovered that liquid water flowed on the asteroid Ryugu's parent body much later than previously thought, indicating that water may have persisted in asteroids for over a billion years, which could have implications for Earth's water origin and planetary formation theories.
Two grains from asteroid Ryugu, brought to Earth by Hayabusa2, contain unique minerals, including a rare phosphide mineral called hydrated ammonium magnesium phosphorus (HAMP), which may shed light on the early Solar System and the origins of life on Earth.