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14 Feb, 2022 18:01

IDU: What is a black hole?

Black holes remain one of the most fascinating astronomical objects in the universe. Their gravitational pull is so strong that nothing...Not even light...Can escape it. Surely you’ve heard of them? But do you know what exactly a black hole is? NASA’s chief scientist Jim Green joins William Shatner on this week's episode of "I Don't Understand" to explore the topic of black holes.

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