Dwarf Satellite Galaxy
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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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Astronomers Spot New Cosmic Explosions 100 Times Brighter Than the Sun
Astronomers have discovered a new class of cosmic explosions, known as 'millinovas,' which are 100 times brighter than the Sun. These events, first identified in 2023, were observed in the Large and Small Magellanic Clouds, two satellite galaxies of the Milky Way. The millinovas are thought to occur when white dwarfs feed off a companion star, prod...
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Faintest Satellite Galaxy Of Milky Way Discovered
Scientists have detected a dwarf satellite galaxy, believed to be the faintest yet found in the halo of the Milky Way, a discovery that provides important insights into galaxy formation and how dark matter contributes to it.
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9 Dwarf Galaxies Found Orbiting the Milky Way
Astronomers from the University of Cambridge have discovered nine dwarf satellites orbiting the Milky Way, the largest number ever discovered at once.
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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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Astronomers Spot New Cosmic Explosions 100 Times Brighter Than the Sun
Astronomers have discovered a new class of cosmic explosions, known as 'millinovas,' which are 100 times brighter than the Sun. These events, first identified in 2023, were observed in the Large and Small Magellanic Clouds, two satellite galaxies of the Milky Way. The millinovas are thought to occur when white dwarfs feed off a companion star, prod...
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Faintest Satellite Galaxy Of Milky Way Discovered
Scientists have detected a dwarf satellite galaxy, believed to be the faintest yet found in the halo of the Milky Way, a discovery that provides important insights into galaxy formation and how dark matter contributes to it.
-
9 Dwarf Galaxies Found Orbiting the Milky Way
Astronomers from the University of Cambridge have discovered nine dwarf satellites orbiting the Milky Way, the largest number ever discovered at once.
