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Our World: Traveling to the Moon and Mars

This NASA video segment calculates the distance from Earth to the moon and from Earth to Mars. Drive time by car is used to help bring meaning to these distances. This video also analyzes the temperature and surface of other planets and explains why Mars is targeted for human exploration. The discussion of light years explains how long it would take to travel to the second closest star to Earth, Proxima Centauri.
Length: 03:56

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