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Is time travel possible?

A video looking at the physics behind time travel.

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Is Sex in Space Still Just a Fantasy?

A video explainer looking at the issues with doing the business in space.

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Hits: 2597

What does sound look like?

See sound waves travel through the air using a clever photographic trick called Schlieren photography.

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Hits: 764

Space-time for beginners

A quick guide to help you get to grips with Einstein’s concept of gravity and space-time.

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Hits: 924

What Space Does to Each of Your Five Senses

Commander Hadfield explains in five short videos what happens to your senses in space.

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Hits: 3792

Einstein Inspires Dr. Mallett's Dream of Time Travel

A great video explaining Einstein's theory of relativity and how it alter how time runs.

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Hits: 1458

Horrible Histories Explains the Space Race in Four Minutes

Great short video from Horrible Histories about the space between the Americans and the USSR.

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Hits: 830

Why astronauts appear weightless in space

Deep inside an astronomer's head, a parasite (voiced by Alan Tudyk) taps into his brain to learn about...science! Specifically, about why astronauts appear weightless in space. Wil Wheaton co-stars.

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Hits: 372

The structure of Earth

Find out how we know the structure of the Earth from the way Earthquakes travel round the world.

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Hits: 371

Why is glass transparent?

How is it that something so solid like glass lets light pass through. It's all due to the space in between the atoms.

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Hits: 804

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