3+ hour, 16+ min ago   (878+ words) What happens to Webb’s mysterious little red dots as the universe ages? The Saguaro galaxy’s red nucleus offers a way to explore their hidden surroundings. When the James Webb Space Telescope began finding tiny, intensely red sources in the early…...

23+ hour, 31+ min ago   (378+ words) The small moons inside Neptune’s rings may be the surviving debris of a much larger moon system destroyed when Triton was captured billions of years ago. Neptune’s smallest moons look like minor members of the solar system. They are difficult…...

3+ day, 22+ 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…...

4+ day, 21+ 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…...

5+ day, 32+ min ago   (493+ words) Twenty-seven faint objects beyond Neptune have emerged from a deep James Webb Space Telescope survey, extending the search for the solar system’s building blocks to worlds only kilometres across. Hubble observations of part of the sample add a second clue:…...

1+ week, 2+ hour ago   (624+ words) A neutron star is what remains after the core of a massive star collapses. It is not a small ordinary star. It is the crushed core of a dead one, compressed until protons and electrons are forced together and most…...

1+ week, 5+ day ago   (373+ words) Researchers have completed one of the largest computer simulations of cosmic history yet assembled. Called ASTRID, it follows the growth of galaxies and black holes from the universe’s early days to the present, giving astronomers a virtual laboratory for testing…...

1+ week, 5+ day ago   (447+ words) Two stars once considered promising Dyson sphere candidates have now been removed from the list. Follow-up observations with NASA’s James Webb Space Telescope showed that the infrared glow did not come from enormous artificial structures around the stars. It came…...

1+ week, 5+ day ago   (821+ words) A quasar is a distant galaxy with a brilliant active centre. Here is how a feeding supermassive black hole can outshine every star around it. What is a quasar? The short answer is a distant galaxy with an extraordinarily bright…...

2+ week, 1+ day ago   (266+ words) Before your next upload Clean image metadata before you share. Remove EXIF, GPS and common AI metadata before you share. Your file stays in your browser. Free · no account Carbon dioxide is also unevenly distributed. Solid CO2 is enhanced around the…...