Video: NASA ships bring messages to aliens still active

NASA's Voyager 1 and 2 train duo continue to transmit data to Earth after 40 years of flying into space despite the distance.

Voyager 2 ship.

Voyager 2 departs August 20, 1977 and Voyager 1 takes off on September 5, 1977. Each ship carries a recording of the sounds on Earth, photos and messages to aliens.

"None of us expected the two spacecraft to remain active and continue their pioneering journey when launching the ship 40 years ago," said Ed Stone, a Voyager scientist at the Caltech Technology Institute in Pasadena, California, USA, share.