The Andromeda Galaxy is the most distant object regularly visible to the naked human eye, at roughly two million loght years away. Now, using the Chandra X-Ray Observatory, astronomers have found 26 new black holes in Andromeda, bringing the total so far discovered there to 35.
Like many, if not most, galaxies, Andromeda has a supermassive black hole at its center, so astronomers have expected to find many, smaller black holes there, too. Those found so far are probably only the beginning.
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