TED-Ed

View full lesson: http://ed.ted.com/lessons/the-search-for-other-planets-olivier-guyon Billions of stars. Billions of galaxies. A thousand years just to count all of the stars in our galaxy and then another thousand to count the galaxies in the universe. At TEDYouth 2012, Olivier Guyon examines the possibility of finding other planets within these astronomical numbers, some potentially rife with life. Talk by Olivier Guyon.