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Can We Time Travel?

Can We Time Travel?

Season 1 Episode 1
54:40
Are We Alone?

Are We Alone?

Season 1 Episode 2
54:41
Why Are We Here?

Why Are We Here?

Season 1 Episode 3
54:41
Where Did the Universe Come From?

Where Did the Universe Come From?

Season 1 Episode 4
54:41
What Are We?

What Are We?

Season 1 Episode 5
54:41
Where Are We?

Where Are We?

Season 1 Episode 6
54:11
Episode 5: The Calling

The Calling

Season 4 Episode 5
53:05
When Whales Could Walk

When Whales Could Walk

Season 51 Episode 1
53:31
Tuberculosis: The Forgotten Plague

Tuberculosis: The Forgotten Plague

Season 6 Episode 5
26:49
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Genius by Stephen Hawking

How Far Apart Are the Moon and the Earth?

The volunteers are given scale models of the moon and Earth. They must guess the distance between the two and then work out how to find out the correct answer. They use the moon in the sky to find the distance between their two models.
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Where Are We?
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54:11
Season 1 Episode 6
Where Are We?
Can three volunteers measure the solar system and universe to find out where we are?
What Are We?
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54:41
Season 1 Episode 5
What Are We?
Three volunteers set out to find an amazing realization about the nature of life itself.
Where Did the Universe Come From?
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54:41
Season 1 Episode 4
Where Did the Universe Come From?
The group experiments with cars and balloons to understand the origin of the universe.
Why Are We Here?
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54:41
Season 1 Episode 3
Why Are We Here?
The volunteers pose an important question about our role in the universe.
Are We Alone?
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54:41
Season 1 Episode 2
Are We Alone?
Three volunteers set to find out how likely it is that aliens exist.
Can We Time Travel?
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54:40
Season 1 Episode 1
Can We Time Travel?
Stephen Hawking sets three challenges to find out if we could be time travelers.
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