Is time travel possible? - Colin Stuart
View full lesson: http://ed.ted.com/lessons/time-travel-and-einstein-s-special-relativity-colin-stuart Time travel is a staple of science fiction stories, but is it actually possible? It...
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Have you ever daydreamed about traveling through time, perhaps fast forward in the centuries and seeing the distant future? Well, time travel is possible, and what's more, it's already been done. Meet Sergei Krikalev, the greatest time traveler in human history. This Russian cosmonaut holds the record for the most amount of time spent orbiting our planet, a total of 803 days, 9 hours, and 39 minutes. During his stay in space, he time traveled into his own future by 0.02 seconds. Traveling at 17,500 miles an hour, he experienced an effect known as time dilation, and one day the same effect might make significant time travel to the future commonplace. To see why moving faster through space affects passage of time, we need to go back to the 1880s, ...
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Have you ever daydreamed about traveling through time, perhaps fast forward in the centuries and seeing the distant future? Well, time travel is possible, and what's more, it's already been done. Meet Sergei Krikalev, the greatest time traveler in human history. This Russian cosmonaut holds the record for the most amount of time spent orbiting our planet, a total of 803 days, 9 hours, and 39 minutes. During his stay in space, he time traveled into his own future by 0.02 seconds. Traveling at 17,500 miles an hour, he experienced an effect known as time dilation, and one day the same effect might make significant time travel to the future commonplace. To see why moving faster through space affects passage of time, we need to go back to the 1880s, ...
