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Life is durable and Earth-like planets aren’t rare. So where are all the aliens?
Potentially habitable planets are more plentiful then we once thought: there are trillions in the Universe, and an estimated million in the Milky Way alone. Looking inward at our own small life-sustaining planet, we’ve also discovered that life isn’t nearly as delicate as we had imaged: lifeforms exist buried in the Earth’s crust and deep underwater, in extreme heat and extreme cold. So why, in every search for intelligent life elsewhere in the Universe, have we come up so utterly empty?
Video by Kurzgesagt
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Astronomy
The remarkable innovations inspired by our need to know the night sky
5 minutes
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Physics
To change the way you see the Moon, view it from the Sun’s perspective
5 minutes
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Space exploration
The rarely told story of the fruit flies, primates and canines that preceded us in space
12 minutes
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Physics
The rhythms of a star system inspire a pianist’s transfixing performance
5 minutes
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Physics
What does it look like to hunt for dark matter? Scenes from one frontier in the search
7 minutes
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Physics
Imagining spacetime as a visible grid is an extraordinary journey into the unseen
12 minutes
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Physics
The abyss at the edge of human understanding – a voyage into a black hole
4 minutes
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Cosmology
Tiny, entangled universes that form or fizzle out – a theory of the quantum multiverse
11 minutes
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Astronomy
The history of astronomy is a history of conjuring intelligent life where it isn’t
34 minutes