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New research suggests the Milky Way galaxy's half-light radius is 19,000 light-years and has a more complex radial structure.
New research in Nature Astronomy by Yunnan University and international institutes suggests the Milky Way galaxy may be larger than previously thought, with a more complex radial structure.
Stellar spectroscopic surveys were used to construct a radial density distribution of stars, revealing the Galactic disk structure in the outer region follows a classical exponential distribution, while the inner region is nearly flat.
The Milky Way's half-light radius is now estimated at 19,000 light-years, in line with nearby galaxies of similar mass.
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Una nueva investigación sugiere que el radio de media luz de la Vía Láctea es de 19.000 años luz y tiene una estructura radial más compleja.