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Sagittarius A (Sgr A) is a complex radio source at the center of the Milky Way, which contains a supermassive black hole.It is located between Scorpius and Sagittarius, and is hidden from view at optical wavelengths by large clouds of cosmic dust in the spiral arms of the Milky Way.
Picture Galaxy Type Distance from Earth Magnitude Group Membership Notes Diameter (ly) Millions of light-years Mpc M m - Milky Way: SBbc 0.0265 (to the galactic center) [2] 0.008 [2] ...
It has been speculated that Omega Centauri is the core of a dwarf galaxy that was disrupted and absorbed by the Milky Way. [29] Indeed, Kapteyn's Star, which is currently only 13 light-years away from Earth, is thought to originate from Omega Centauri. [30] Omega Centauri's chemistry and motion in the Milky Way are also consistent with this ...
The discovery is quite surprising, since the black hole is five times more massive than the Milky Way's black hole despite the galaxy being less than five-thousandths the mass of the Milky Way. Some galaxies lack any supermassive black holes in their centers.
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The Black Hole at the Center of the Milky Way; The dark heart of the Milky Way; Animation showing orbits of stars near the center of the Milky Way galaxy; Zooming in on the center of the Milky Way; Dramatic Increase in Supernova Explosions Looms; APOD: Journey to the Center of the Galaxy; A Galactic Cloud of Antimatter; Fast Stars Near the ...
As with other voids, it is not completely empty; it contains the Milky Way, the Local Group, and the larger part of the Laniakea Supercluster. The Milky Way is within a few hundred million light-years of the void's center. [5] It is debated whether the existence of the KBC void is consistent with the ΛCDM model.
Three stellar components with varying scale heights can be distinguished within the disc of the Milky Way (MW): the young thin disc, the old thin disc, and the thick disc. [12] The young thin disc is a region in which star formation is taking place and contains the MW's youngest stars and most of its gas and dust. The scale height of this ...