Together with brilliant scientists I have always been fascinated by scientists popularizing science.
Pale Blue Dot or Pale Blue Dot is a famous photograph of the Earth taken by the Voyager-1 probe from a distance of 5.9 billion kilometers. Many even call it the most important photograph in the history of mankind. The name and the very idea of ​​making such a picture belongs to Karl Sagan , one of the most famous popularizers of science. ')
In 1994, the book of the same name, “Pale blue dot: a vision of the human future in space,” was published, and in 1996, Karl Sagan gave his opening speech. I suggest you to listen to her.
Original (Voice of Sagan on video hosting put on a lot of different pictures, and a lot of similar videos)