Carl Sagan .

"You Are Here on the  Pale Blue Dot ... on our tiny world, that small planet."

                                          This is a famous video by Carl Sagan

"Our posturing, our imagined self-importance, the delusion that we have some privileged position in this universe are challenged by this pale light, the pale blue dot, the only home we've ever known."

Carl Edward Sagan (/ˈseɪɡən/; November 9, 1934 – December 20, 1996) was an American astronomer, cosmologist, astrophysicist, astrobiologist , author, science popularizer, and science communicator. in astronomy and other natural sciences. He is best known for his work as a science popularizer and communicator.