Astronomycast 145: Interstellar Travel

In science fiction it’s easy to hop into your spaceship and blast off for other stars. But the true distances between stars, and the limits of relativity make interstellar travel almost impossible with our current technology. What would it really take to travel from star to star, exploring the galaxy?

http://www.astronomycast.com/space-flight/ep-145-interstellar-travel/

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