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NASA's Hubble Images Show Binary Stars Can Shape the Evolution of Star Clusters
Astronomers studying the young star cluster Pismis 24 in the Lobster Nebula found many stars exist in binary systems
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Astronomers Find ‘Impossible’ Galaxy ACDG-2 With Virtually No Stars and a Massive Dark Matter Core
Astronomers have identified CDG-2, a faint galaxy in the Perseus cluster that appears to be composed almost entirely of dark matter. Located 300 million light-years from Earth, it was discovered by tracking globular star clusters using data from Hubble, Euclid, and Subaru telescopes. Scientists estimate that about 99% of its total mass is dark matt...
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Astronomers Capture First Detailed View of Hot Gas Swirling Around Black Holes
Japan’s XRISM X-ray observatory has delivered the first detailed maps of hot gas swirling around supermassive black holes in the Virgo and Perseus galaxy clusters. The data reveal intense turbulence, like cosmic storms driven by black hole jets. This churning heats the gas, stopping it from cooling and collapsing into new stars, explaining why cl...
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Hubble Reveals How Blue Straggler Stars Stay Young in Ancient Clusters
Astronomers using the Hubble Space Telescope have uncovered new clues to the mystery of blue straggler stars—unusually hot, bright stars found in ancient globular clusters. By studying ultraviolet light from 48 clusters, scientists discovered that blue stragglers are more common in sparse clusters, supporting the idea that they form through binar...
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NASA Finds Most Distant Calm Galaxy Cluster Ever Seen in Early Universe
Astronomers using NASA’s Chandra X-ray Observatory have discovered SPT-CL J2215-3537, a massive galaxy cluster located 8.4 billion light-years away. Nicknamed the “Champagne Supernova” cluster, it is the most distant relaxed cluster ever observed, showing no signs of recent collisions. Its calm structure and active star formation challenge ex...
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Astronomers Uncover the Vast Greater Pleiades Complex with 3,000 Hidden Stars
Astronomers analyzing Gaia and TESS data have discovered that the famed Pleiades is only the bright center of a much larger stellar complex containing over 3,000 stars. Spanning 2,000 light-years, this vast family reveals how young clusters form, travel, and disperse across the galaxy.
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James Webb Telescope May Have Spotted First Generation of Stars in the Universe
Astronomers using JWST may have discovered Population III stars in cluster LAP1-B, offering new insights into early galaxy formation and the universe’s first luminous objects. JWST observations suggest Population III stars may have formed 13 billion years ago, helping trace early galaxies. These stars might be building blocks for larger galaxies ...
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NASA Hubble Space Telescope Uncovers One of the Youngest Known Blue Straggler–White Dwarf Systems
Italian astronomers using the Hubble Space Telescope have discovered a white dwarf orbiting a blue straggler star in the globular cluster 47 Tucanae, located 15,300 light-years away. The rare system, among the youngest detected, sheds light on stellar mass transfer and offers vital clues to the evolution of binary stars in dense clusters.
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NASA's James Webb Space Telescope Captures Lobster Nebula’s Towering Spires and Massive Stars
NASA’s Webb Telescope imaged the Lobster Nebula (NGC 6357), 5,500 light-years away. Its young star cluster, Pismis 24, contains giant stars carving glowing gas pillars. Pismis 24-1, once thought to be one supermassive star, is a triple system with stars up to 74 times the Sun’s mass.
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Ursa Major III May Be a Star Cluster, Not a Dark-Matter Dwarf Galaxy
Astronomers have long thought Ursa Major III, also called UNIONS 1, was a dark-matter-packed dwarf galaxy. But new simulations suggest it may instead be a compact star cluster bound by black holes and neutron stars. Located 30,000 light-years away, Ursa Major III contains just ~60 visible stars yet shows puzzlingly high stellar velocities. The new ...
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NASA's Hubble Images Show Binary Stars Can Shape the Evolution of Star Clusters
Astronomers studying the young star cluster Pismis 24 in the Lobster Nebula found many stars exist in binary systems
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Astronomers Find ‘Impossible’ Galaxy ACDG-2 With Virtually No Stars and a Massive Dark Matter Core
Astronomers have identified CDG-2, a faint galaxy in the Perseus cluster that appears to be composed almost entirely of dark matter. Located 300 million light-years from Earth, it was discovered by tracking globular star clusters using data from Hubble, Euclid, and Subaru telescopes. Scientists estimate that about 99% of its total mass is dark matt...
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Astronomers Capture First Detailed View of Hot Gas Swirling Around Black Holes
Japan’s XRISM X-ray observatory has delivered the first detailed maps of hot gas swirling around supermassive black holes in the Virgo and Perseus galaxy clusters. The data reveal intense turbulence, like cosmic storms driven by black hole jets. This churning heats the gas, stopping it from cooling and collapsing into new stars, explaining why cl...
-
Hubble Reveals How Blue Straggler Stars Stay Young in Ancient Clusters
Astronomers using the Hubble Space Telescope have uncovered new clues to the mystery of blue straggler stars—unusually hot, bright stars found in ancient globular clusters. By studying ultraviolet light from 48 clusters, scientists discovered that blue stragglers are more common in sparse clusters, supporting the idea that they form through binar...
-
NASA Finds Most Distant Calm Galaxy Cluster Ever Seen in Early Universe
Astronomers using NASA’s Chandra X-ray Observatory have discovered SPT-CL J2215-3537, a massive galaxy cluster located 8.4 billion light-years away. Nicknamed the “Champagne Supernova” cluster, it is the most distant relaxed cluster ever observed, showing no signs of recent collisions. Its calm structure and active star formation challenge ex...
-
Astronomers Uncover the Vast Greater Pleiades Complex with 3,000 Hidden Stars
Astronomers analyzing Gaia and TESS data have discovered that the famed Pleiades is only the bright center of a much larger stellar complex containing over 3,000 stars. Spanning 2,000 light-years, this vast family reveals how young clusters form, travel, and disperse across the galaxy.
-
James Webb Telescope May Have Spotted First Generation of Stars in the Universe
Astronomers using JWST may have discovered Population III stars in cluster LAP1-B, offering new insights into early galaxy formation and the universe’s first luminous objects. JWST observations suggest Population III stars may have formed 13 billion years ago, helping trace early galaxies. These stars might be building blocks for larger galaxies ...
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NASA Hubble Space Telescope Uncovers One of the Youngest Known Blue Straggler–White Dwarf Systems
Italian astronomers using the Hubble Space Telescope have discovered a white dwarf orbiting a blue straggler star in the globular cluster 47 Tucanae, located 15,300 light-years away. The rare system, among the youngest detected, sheds light on stellar mass transfer and offers vital clues to the evolution of binary stars in dense clusters.
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NASA's James Webb Space Telescope Captures Lobster Nebula’s Towering Spires and Massive Stars
NASA’s Webb Telescope imaged the Lobster Nebula (NGC 6357), 5,500 light-years away. Its young star cluster, Pismis 24, contains giant stars carving glowing gas pillars. Pismis 24-1, once thought to be one supermassive star, is a triple system with stars up to 74 times the Sun’s mass.
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Ursa Major III May Be a Star Cluster, Not a Dark-Matter Dwarf Galaxy
Astronomers have long thought Ursa Major III, also called UNIONS 1, was a dark-matter-packed dwarf galaxy. But new simulations suggest it may instead be a compact star cluster bound by black holes and neutron stars. Located 30,000 light-years away, Ursa Major III contains just ~60 visible stars yet shows puzzlingly high stellar velocities. The new ...
