Carl Sagan

Carl Sagan was an American astronomer, cosmologist, astrophysicist, astrobiologist, author, science popularizer, and science communicator in astronomy and other natural sciences.
Pale Blue Dot - Cosmos, A Spacetime Odyssey (2014)
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Pale Blue Dot

Watch Carl Sagan deliver his now famous Pale Blue Dot speech for the very first time to a live audience.

PIA00452 Edited • Why are we here?
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Why are we here?

In 1977 a team of NASA scientists sent two spacecraft into the distant reaches of our universe.