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Astrophysics & Cosmology
Black holes, dark matter, gravitational waves, and the big‑picture universe.
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Large Physics Survey Finds No Majority Backing for Dark Matter or Quantum Gravity Answers
2+ hour, 18+ min ago (792+ words) A large survey of views on open questions in fundamental physics found that most of the answers a general reader would assume are settled do not command a majority among the people who work on them. The standard model of…...
Astronomers had only 116 observations of the jet erupting from blazar 3C 345 across 27 years. An AI system turned them into the highest-resolution continuous reconstruction yet—and revealed features appearing to travel 10–13 times faster than light.
3+ hour, 42+ min ago (929+ words) A neural-field reconstruction joined 116 VLBA epochs into a continuous model of 3C 345, mapping apparent superluminal motion while exposing important interpolation limits. By Deep Field · Edited by Lachlan Brown Published September 15, 2026 · How we edit Astronomers did not film the jet of 3C 345 continuously…...
If Black Holes Have Hair, We Will See It in the Ringdown of Their Mergers
3+ hour, 44+ min ago (39+ words) Researchers have found that if black holes have certain features, known as "hair," then we could prove it by observing the gravitational ringdown of merging black holes. Future studies could test the no-hair theorem of general relativity....
ALMA is Watching a Massive Binary Star System Form
4+ hour, 2+ min ago (319+ words) Astronomers used 8 years of observations to create a 3D image of a very young, very massive binary star as it forms. The image shows that the disks in the system are all misaligned. Those misalignments, together with the orbit, are clues…...
Active Supermassive Black Holes Actually Trigger Star Formation in Nearby Galaxies
3+ hour, 59+ min ago (518+ words) Recent research led by astronomers at the Center for Astrophysics | Harvard & Smithsonian suggests that actively growing supermassive black holes may actually boost star formation in their host galaxies rather than suppress it. Published in The Astrophysical Journal, the study analyzed…...
Black Holes May Be Building Galaxies Instead Of Destroying Them, New Study Reveals
4+ hour, 34+ min ago (633+ words) New observations reveal that active supermassive black holes may help shape star formation across their host galaxies. The research team used the VLT/MUSE instrument to create detailed three-dimensional maps of gas movements and energy sources inside the galaxies. These…...
Tachyon Drives That Reverse Time?
6+ hour, 57+ min ago (826+ words) Exploring the controversial claims of Michael Salla regarding tachyon drives, reverse time travel, and alleged secret space programs, examining the intersection of fringe science and geopolitical speculation.(Visited 3 times, 3 visits today) Tachyon Drives That Reverse Time? Unpacking Claims of Tachyon…...
Fast Radio Bursts Map Cosmic Gas Across the Universe
5+ hour, 18+ min ago (824+ words) A new Nature Astronomy study uses 114 fast radio bursts to trace cosmic gas and test how stellar and black-hole feedback reshapes matter around galaxies. A fast radio burst lasts only a fraction of a second. Then it is gone, leaving…...
NASA’s Chandra Discovers a Mysterious New Class of Cosmic Objects That Could Solve Two Longstanding Mysteries
6+ hour, 51+ min ago (512+ words) A new class of cosmic object observed by NASA’s Chandra X-ray Observatory could hold the key to unraveling two long-standing mysteries, astronomers say. In a recent paper published in Nature Astronomy, researchers described these new cosmic objects as having high…...
Why Do Galaxies Collide If the Universe Is Expanding?
8+ hour, 18+ min ago (622+ words) The universe is expanding, yet galaxies still merge. The answer lies in gravity, local motion, and the difference between cosmic expansion and a galaxy’s neighbourhood. The phrase “the universe is expanding” can sound as though every galaxy must move away…...