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Jun 21, 2025, 1:34 pm280 ptsTop
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It's not dark matter, writes Space.com. But astronomers have discovered "a vast tendril of hot gas linking four galaxy clusters and stretching out for 23 million light-years, 230 times the length of our galaxy. "With 10 times the mass of the Milky Way, this filamentary structure accounts for much of the…
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