Discoveries and Breakthroughs

5+ hour, 11+ min ago   (25+ words) NASA’s Chandra X-ray Observatory has revealed a completely unexpected population of objects emitting extremely low-energy X-rays, so …...

1+ day, 8+ hour ago   (516+ words) An ancient star cluster is slowly coming apart in a galaxy 115 million light-years away. The thin trail it left behind is giving astronomers a new way to study dark matter beyond the Milky Way. Astronomers have identified the first stellar…...

1+ day, 22+ hour ago   (775+ words) New gravitational wave observatories could detect ancient black hole mergers and reveal how the first stars shaped the early universe. New generations of gravitational wave detectors could soon detect the hidden remnants of the universe’s first stars, according to a…...

3+ day, 4+ hour ago   (440+ words) Researchers found 84 so-called hypersoft X-ray sources in M101, Messier 31, and four elliptical galaxies Space scientists have revealed they've uncovered "mysterious objects" behaving in ways never witnessed before. Astronomers spotted them emitting remarkably low-energy X-rays while producing powerful bursts of ultraviolet radiation....

4+ day, 10+ hour ago   (1618+ words) What if a star simply disappeared from the sky? Astronomers have discovered a group of unusual white dwarf stars that suddenly became so heavily obscured that they appeared to vanish from view. The likely culprit isn't a disappearing star—but…...

4+ day, 13+ hour ago   (646+ words) Wednesday September 09, 2026 Astronomers have directly detected an extremely faint radio signal from hydrogen gas billions of light-years away, marking an important step toward using hydrogen to map the large-scale structure of the Universe. An international research team led by scientists…...

5+ day, 1+ hour ago   (719+ words) Galaxy clusters are the most massive gravitationally bound structures in the Universe. These colossal groupings of hundreds to thousands of galaxies span millions of light-years. They are held together by large concentrations of dark matter, which serves as the building…...

5+ day, 2+ hour ago   (864+ words) Galaxy clusters are the most massive gravitationally bound structures in the Universe. These colossal groupings of hundreds to thousands of galaxies span millions of light-years. They are held together by large concentrations of dark matter, which serves as the building…...

5+ day, 1+ hour ago   (762+ words) Scientists have uncovered a new approach to reading black hole signals, but the strange possibility behind the pattern remains one of the biggest mysteries. Black holes may hide structures that cannot be seen directly but could leave traces in gravitational…...

6+ day, 3+ hour ago   (161+ words) Each of the quiet black holes we've discovered this way has a small stellar companion. This means that in the past these were asymmetrical binaries, meaning that one of the stars was much larger than the other. The remnants of…...