Single greatest picture ever taken

Pale blue dot

"With this great distance, Earth may not seem particularly interesting. But for us it is different. Think about that point again. It's here. It's home. That's us. On her, all you've ever loved, everyone you know, everyone you've ever heard of, every human being that ever lived, lived out their lives here. The aggregate of all our joys and sufferings, thousands of confident religions, ideologies and economic doctrines, every hunter and collector, every hero and coward, every creator and destroyer of civilization, every king and subject, every young couple in love, every mother and father,every inventor and explorer, every teacher of morals, every corrupt politician, every superstar, every supreme leader, every saint and sinner in the history of our species, lived there on a mote of dust, suspended in a sunbeam.

This si a wery powerful quote by Carl Sagan about a picture which was taken by Voyager 1 space probe on february 14, 1990 from a distance of about 6 billion kilometers from Earth.

Voyager 1 is a spacecraft launched on September 5, 1977 by the NASA with the task of exploring the outer part of the Solar System, and later interstellar space. Working for over 40 years by this date, the spacecraft regularly receives commands and transmits data back to Deep Space Network. Travelling at 64,000 km/h (40,000 mph) It is the first probe that has left the Sun's system and is also the farthest object from Earth that man has created.

Source: various sources on internet, Carl Sagan book - Pale Blue Dot: A Vision of the Human Future in Space