The Solar System’s gas giant and largest world
The Vera C. Rubin Observatory has begun the Legacy Survey of Space and Time, a 10-year program that will image the southern sky every few nights. The telescope has started regular operations from its Chilean mountaintop site and is already returning new detections, including thousands of asteroids and transient views such as Comet 3I/ATLAS.
Astronomers have detected helium escaping from LHS 1140b, a rocky 'super-Earth' 48 light-years away that orbits in its star's habitable zone. The finding has confirmed an atmosphere around a habitable-zone rocky exoplanet for the first time and has been published in Science; teams used ground-based infrared spectroscopy and modelling.
Scientists have captured the Sun’s surface at unprecedented resolution with the Daniel K. Inouye Solar Telescope and other instruments and have identified widespread Kelvin–Helmholtz vortices—500–2,000km spirals of magnetised plasma. The team has linked these instabilities to how magnetic energy cascades to smaller scales and feeds flares and coronal mass ejections that produce space weather.
Skywatchers have been treated to a string of September conjunctions and phases: Venus has paired with Spica, the Moon has aligned with the Pleiades, Mars and Jupiter, and a partial lunar eclipse has produced reddish tones across wide regions. Through October and November, the Pleiades, the Orionid and Leonid meteor showers, a planetary parade on 14 November and the Beaver supermoon on 24 November will provide more viewing opportunities.
Archaeologists uncover a mastaba at Saqqara dating to Egypt’s Fifth Dynasty, built for Yunmen, a high-ranking official, and his father Ity. The site includes two chapels, painted reliefs, and a false door, with colors well-preserved after more than 4,000 years. The find supports ongoing efforts to boost Egypt’s tourism through new discoveries.
Scientists have identified a 222‑metre‑wide, up to 43‑metre‑deep crater on the Moon formed in spring 2024 and first spotted in LRO images in 2025. The impact churned material across more than 100 km, produced a roughly 7‑km cold spot and has provided rare data scientists say will inform risk assessments for planned lunar bases.
Astronomers have detected radio waves from Beta Pictoris b that indicate a strong magnetic field, suggesting a magnetosphere outside our solar system. The finding, based on MeerKAT observations, marks a potential first in confirming exoplanetary magnetospheres and hints at conditions that could support life.