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Black Holes

What are black holes, and are they real? How can we observe them if their gravity is so strong that not even light can escape?

From the
POTD Archive

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Too Close for Comfort
Marcia Smith

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Kimmel
Robert Mann

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I See No Ships
Geoff Stamp

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Up Close
Ed Mattis

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Rusty Anchors
susie peek-swint

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