Below is a link to a great article at CNN about the possibility of 100 billion earth-type worlds in the galaxy.
That’s galaxy, not universe. Extrapolate from 100 billion in our galaxy to encompass the billions of galaxies in the universe and the number is mind-blowing!
Which means there could be thousands of intelligent civilizations in the galaxy. Not Klingons or Vulcans or Cylons, but something beyond what our imaginations could possibly conceive.
How exciting is that! The possibility that we truly are not alone in the universe. Sci-fi nerd that I am news like this just sets my geeky heart a flutter. *grin*