How long until extraterrestrial life reaches back?

Subscribe to Dark5 ► http://bit.ly/dark5

Presenting Humanity's 5 Farthest Reaches into Space by category, including crew of the Apollo 13, the farthest humans ever from Earth, the Voyager I spacecraft and its golden record, the first man-made objects to leave the solar system, gamma-ray burst GRB 090423, humanity's farthest ever observation, the Marconi and "Morse Message" radio transmissions, possibly the farthest radio signals ever sent, and the TV broadcast of 1936 Olympic Games Opening Ceremony, possibly the first video of Earth that aliens will see.

More Dark5 Space Videos:
5 Most Mysterious Objects in the Solar System ► https://www.youtube.com/watch?v=ni0GtB5UugI
5 Most Mysterious Signals from Space ► https://www.youtube.com/watch?v=My02OrCHxVw
5 Most Mysterious Photos from Mars ► https://www.youtube.com/watch?v=JpNg8Z75sEs

Like Dark5 on Facebook: facebook.com/dark5tv
Follow Dark5 on Twitter: @dark5tv

Music:“The Comeback” by Frantz

Intro: "The Machine Thinks"
By Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
https://creativecommons.org/licenses/by/3.0/