25 years ago today, Voyager I turned around to take a photo of Earth on its way out of the Solar System. You are looking at it. Our planet—6 billion kilometers (3.7 billion miles) away from the spacecraft—is that tiny pale blue dot, "a mote of dustsuspended in a sunbeam." It is one of the most important photos ever.
I have seen countless science fiction movies and documentaries about the future of humanity. None of them were as inspiring, beautiful, and realistic as this extraordinary short film by Erik Wernquist, narrated by Carl Sagan. Watch it and get ready for goosebumps.
The Pale Blue Dot—a book that should be mandatory for every single student in the world—is a vision of the cosmos that will inspire you to be a better human being. It's full of memorable passages but this is the best—the one that gives its title to the book.
NASA's Cassini spacecraft has just captured another Pale Blue Dot image while orbiting Saturn. The difference is that, in this view, unlike the one from July 19, 2013, that featured Earth, the blue orb is Uranus, imaged by Cassini for the first time. So that tiny dot hanging out there in the blackness of space is…
The spacecraft was a long way from home.