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Episode 42: Dwarf Galaxies

Play Jun 22•4:15

Our Milky Way belongs to a cluster of about a dozen galaxies known as the Local Group. New discoveries keep increasing that cluster's number. Astronomers are finding more of the small dwarf galaxies that hover around our Milky Way. These dwarf galaxies, hidden among the stars, gas and dust of our own galaxy, are difficult to detect. But a new survey of the sky is helping astronomers pick out mo...

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