天体化学

New analyses of Hayabusa2 material show asteroid samples contain genetic building blocks — all five canonical nucleobases — but key gaps remain before we can say space made life. 三月 28, 2026

A bright, short radio burst—called a 'mega‑laser'—was detected by South Africa's MeerKAT and traced to a merging galaxy 8+ billion light‑years away. Astronomers say the signal i... 三月 23, 2026

This week scientists revisit Viking data from 1976 and argue that positive signals in early life-detection experiments may have been wiped out by the very tests designed to find... 二月 17, 2026

A rare interstellar visitor, 3I/ATLAS, has produced an unexpected sunward glow that has left scientists baffled. New multi‑telescope data shows unusual chemistry and morphology;... 二月 17, 2026

Scientists report ribose and glucose in pristine samples from asteroid Bennu, along with salts, phosphates and amino acids — findings that sharpen theories about how life’s ingr... 二月 06, 2026

Hubble observations show the Neptune-sized exoplanet GJ 3470b leaking a giant hydrogen cloud and shedding mass at a record rate. Astronomers say the planet may be on a long path... 一月 19, 2026

NASA’s Europa Clipper and other spacecraft have returned ultraviolet views of the interstellar comet 3I/ATLAS, validating flight hardware and mapping gas and dust while coordina... 一月 09, 2026

NASA's SPHEREx mission has completed a full-sky survey in 102 infrared bands, producing a multilayered cosmic atlas that scientists say can turn a flat star chart into a 3D map ... 十二月 20, 2025

New observations of interstellar visitor 3I/ATLAS have revealed an odd chemistry, strange light-scattering and sunward jets — and a debate between natural explanations and calls... 十一月 18, 2025

A fresh analysis of Cassini’s ice-grain samples reveals freshly ejected organic intermediates and strengthens the case for hydrothermal chemistry in Enceladus’s subsurface ocean... 十一月 17, 2025

Observations with JWST’s MIRI instrument reveal multiple complex organic molecules embedded in ice around a protostar in the Large Magellanic Cloud, marking the first solid-stat... 十一月 15, 2025

An unusually large and fast interstellar object, 3I/ATLAS, is generating debate after a Harvard researcher suggested it may be artificial and urged attention to forthcoming obse... 十一月 13, 2025