Using JWST's NIRSpec spectrograph, a team led by M. Ryleigh Davis has detected clay minerals on Neptune's small moons Larissa and Galatea and in its rings — the first such detection on any outer solar system body beyond Jupiter. Because these phyllosilicates form only through alteration by liquid water, they must have originated deep inside larger, warmer moons that were destroyed when Triton was captured. Neptune's inner moons may therefore be the exposed interiors of ancient icy worlds. Published in Science Advances.

Astronomers using ESO's Very Large Telescope Interferometer have discovered S301, the fastest known star in the Milky Way, orbiting the supermassive black hole Sagittarius A* at 25,000 km/s — over 8% of the speed of light — and completing an orbit in just 8.7 years. Published in Nature by the GRAVITY+ collaboration, the star passes close enough to feel the black hole dragging spacetime, making it the first star that could directly measure a supermassive black hole's spin — a key test of Einstein's general relativity.

A team led by Zhaodong Shi (University of Science and Technology of China) has proposed that the microquasar Cygnus X-3 — recently confirmed as the Milky Way's first "super-PeVatron" — is the cosmic accelerator powering the mysterious Cygnus Bubble, a gamma-ray structure thousands of light-years across. Their model reproduces both the bubble's brightness and shape if Cygnus X-3 channels just 1-3% of its power into particle acceleration. Published in The Astrophysical Journal Letters.

El orbitador lunar surcoreano Danuri ha capturado imágenes del antes y el después del cráter que una etapa superior de un Falcon 9 de SpaceX excavó al estrellarse contra la Luna el 5 de agosto de 2026. El cuerpo del cohete, de 4.000 kg, impactó a unos 8.690 km/h formando un cráter de hasta 27 metros. La agencia coreana KARI realizó ocho pasadas sobre el sitio, y desde España se habría captado el video de la eyección.