Millions of invisible ‘mirror stars’ may exist in the Milky Way, and astronomers know how to find them

There may be an invisible universe of stars, nebulae and galaxies made up entirely of black matter. And astronomers now know how to find it.

Simply put, dark matter is a mystery. Astronomers have many independent lines of evidence that all point to the existence of some form of matter in the universe that is effectively invisible. It does not interact with light. But it has the influence of gravity on normal matter. Dark matter keeps galaxies stuck together despite their high spin rates, keeps cluster gas together despite its high temperature, bends the path of background light throughout the universe, and more. shapes the largest structure of the universe.

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