Scientist Ed Stone of CalTech and formerly of the Jet Propulsion Laboratory explains the significance of the Voyager mission that was blasted off in 1977 for what was hoped to be at least a four year mission that would be able to photograph two out the outer planets (Jupiter and Saturn) but is still going strong nearly four decades later, passing Neptune and Uranus and has just almost left the solar system and entered interstellar space, and is still sending back information.

Stephen Colbert interviews Stone about this amazing engineering feat.

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