58+ min ago   (476+ words) A sub-threshold Einstein Probe X-ray flash was found after ZTF spotted supernova SN 2025wkm. Researchers link the signal to shock breakout and a possible magnetar-powered engine. EP250827b was a soft X-ray flash that lasted more than 1,000 seconds. Spectral fits put its peak…...

22+ hour, 43+ min ago   (251+ words) Tiny minerals inside one of the most pristine meteorites ever found still carry a record of magnetism from the solar system’s first 200,000 years. Tiny mineral grains inside an Antarctic meteorite may preserve the oldest evidence yet of a magnetic field…...

2+ day, 15+ hour ago   (924+ words) Hubble has found a growing ten-sided atmospheric wave around Saturn’s south pole—the first large regular-sided jet seen there. Saturn has long been known for a strange shape in its clouds. A vast hexagon circles the planet’s north pole, holding…...

2+ day, 17+ hour ago   (1203+ words) Twenty-seven faint objects beyond Neptune are giving astronomers a rare look at the planet-building material that survived when the outer solar system stopped growing. The outer solar system is not empty. Beyond Neptune, in the cold region known as the…...

2+ day, 18+ hour ago   (1153+ words) The objects are unusually soft in X-rays but bright in extreme ultraviolet light—exactly the combination that makes them difficult to find and potentially important to the history of stars and galaxies. A galaxy can be full of powerful objects…...

2+ day, 20+ hour ago   (636+ words) Look into the middle of N44 and the most striking feature is what seems to be missing. A vast opening interrupts the glowing gas, while stars crowd the surrounding scene. What could carve a cavity this large—and what happens to…...

2+ day, 21+ hour ago   (374+ words) What might happen when the ingredients of life have an entire landscape in which to react? On Titan, NASA hopes to investigate that question by flying from one patch of ground to another. The update also highlighted the name of…...

3+ day, 19+ hour ago   (556+ words) A brilliant X-ray source is not automatically a black hole. Matter falling toward a neutron star can also become intensely luminous, and some neutron stars have surprised astronomers by producing far more radiation than expected. Identifying the object requires evidence…...

3+ day, 20+ hour ago   (511+ words) Venus can reach its greatest brilliance while a telescope shows only a crescent. A nearly full Venus exposes more of its sunlit hemisphere, yet that does not necessarily deliver more light to Earth. The missing part of the explanation is…...

3+ day, 21+ hour ago   (495+ words) giving astronomers a new counterpart to the planet’s famous northern hexagon. The southern pattern appears to be evolving, raising a question that a single striking image cannot answer: will it become another enduring feature of the planet’s weather? A study…...