Astronomers discovered the Milky Way sits within a vast flat sheet of dark matter stretching over 32 million light-years, explaining why most nearby galaxies drift away instead of being pulled toward the Local Group. Scientists discovered that the Milky Way functions as a component of a massive flat dark matter sheet, which extends through space for more than tens of millions of light-years. The study solved a decades-long cosmic mystery because all but one of th... [1040 chars]
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