How Do We Find Dark Matter?

Physicists are on the hunt for dark matter, but how do they detect it?
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NASA Finds Direct Proof of Dark Matter
“Dark matter and normal matter have been wrenched apart by the tremendous collision of two large clusters of galaxies. The discovery, using NASA's Chandra X-ray Observatory and other telescopes, gives direct evidence for the existence of dark matter.”
What Is Dark Energy?
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“More is unknown than is known. We know how much dark energy there is because we know how it affects the Universe's expansion.”
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