Solving The Size Of The Milky Way
The results, outlined in a new study, show that the Milky Way is about 60 percent larger than previously thought, and they also reveal a rippling pattern, which raises intriguing questions about what sent wavelike fluctuations rippling through the disk. Instead of extending nearly 100,000 light-years from one side to the other, it would be more like 160,000 light-years wide. This brings the Milky Way’s size up to that of Andromeda. The Milky Way’s small radius in comparison to Andromeda’s larger radius has always puzzled astronomers, because the two galaxies have roughly the same mass.
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