Cosmos

Season 1 Episode 8

Travels in Space and Time

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Full Episode: Travels in Space and Time

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Full Episode Summary

What is a "Light Year"? Will we ever be able to tour the universe in spaceships, and if so, how will we do it? Is time travel possible and what would be its effects? Einstein's theory says that as a space ship moves faster, time onboard would slow down and the mass of the ship would become greater. Dr. Sagan also travels to Italy and introduces the young Einstein as he ponders beams of light and their speed.moreless
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More Info About This Show

Themes

Space Exploration, theoretical science, space travel, social issues, fate of the galaxy