Credit: NASA/JPL-Caltech/KSC The National Academies’ Committee on Planetary Protection is hosting a virtual meeting that will inform NASA’s efforts to develop a prioritized list of factors that contribute to the

Close-up of a sample particle from asteroid Bennu. Credit NASA/Scott Eckley The same particle analyzed with X-ray computed tomography scanning. This specimen shows the most common types of

The researchers focused on exceptionally well-preserved sedimentary rocks deposited on ancient seafloors in what is now southern Sweden. Credit Unil How can we measure time more than 500 million years

Slime mould Dictyostelium discoideum protein complex Q55DI5 (AF-0000000066503175), annotated as a transcription elongation factor. The single chain looked disordered, but modelling the homodimer revealed that two chains intertwine, each contributing

Comet K1, whose full name is Comet C/2025 K1 (ATLAS) – not to be confused with interstellar comet 3I/ATLAS – was not the original target of a recent Hubble study.

F187N image showing Pa𝛼 emission line flux (MJy/sr), which can be treated as a proxy for FUV radiation. The dark blue regions have flux of the order 100 MJy/sr, and

Astrochemistry Status Report astro-ph.GA March 18, 2026 (Left) Depiction of the hemibonded CN radical adsorbed on a 14 H2O cluster. (Right, Top) Parallel geometries for the approach of C2H2 and