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Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:35
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PBS Space Time

We Thought Black Holes Created Event Horizons. It Might Be the Opposite

Season 11 Episode 30

Don’t panic, but it's possible that an event horizon is forming right behind you right now. Don’t bother looking—you won’t see it. You won’t know that it’s growing to envelop you until it’s way too late. And it definitely won’t look like the classic picture of a black hole that you’re probably familiar with.

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Dark matter has eluded us for many decades but we may be able to discover more now.
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