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Episode 101: HubbleWatch for May 2007

Play May 24•4:55

Where scientists find galaxies, they find blobs of dark matter. Recently, astronomers discovered something unique - a ring of dark matter within a cluster of galaxies. Scientists believe the ring formed when galaxies smashed into one another. It's the first time scientists have observed dark matter reacting to gravitational forces, just like normal matter. Did Hubble find water vapor on a plan...

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