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-Elizabeth Landau
Andromeda is the nearest large galaxy to the Milky Way, and it is a spiral galaxy slightly larger than the Milky Way. It resides 2.5 million light-years from our own galaxy, which is considered very close, given the broader scale of the universe. Stargazers can see Andromeda without a telescope on dark, clear nights. It features a dominant source of high-energy X-ray emission. NASA's NuSTAR (Nuclear Spectroscopic Telescope Array) mission has pinpointed...click here to continue!
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