"If the dinosaurs had a space programme, they'd still be around." ~~Carl Sagan
Carl, was a pioneer in the field of exobiology, the study of the possibility of extraterrestrial life.
Carl, never said "billions and billions". That came about from his appearance on the Johnny Carson television show when Carson--not Carl-- said "billions and billions"in a quip but as we say today, 'it went viral'.
All this came about from our present space capsule that is circling the moon that took a picture and sent back to earth of that amazing little "blue dot" we call home like the one earlier astronauts took. Carl had some interesting thoughts about that "The Blue Dot" that came about. Now, after all those years, the image is raising some very interesting questions that Sagan had written about. The man was religious and believed that God did exist but maybe had been under or over estimated in early writings thousands of years ago--- not disbelieving that God created the Earth, but a question pro and con on maybe not the 400 billion starts in the galaxy beyond our own. Something to that nature. The point is---There is so much we do not know about the universe and through exploration some of those questions can still be answered. Most recently, Harvard Physicist Lisa Randall's new book "Knocking on Heavens Door" says she thinks an extra dimension may exist close to our familiar reality, hidden except for a bizarre sapping of the strength of gravity as we see it. That article in greater detail is from the Smithsonian Magazine, December 2011 by Robert Irion.
So, as we work on how to change the course of a space rock big enough to house the Empire State Building from not hitting us, those space programs that Carl referred to was 'right on critical thinking' and maybe, we won't be wiped out like the dinosaurs demise because they didn't have one of those space programmes where as, we do today.
