It's Carl Sagan's birthday! Time to party like the starstuff that we are.Robbie Gonzalez11/09/12 5:14pmFiled to: carl saganAstronomyastrophysicsSpacecosmologyScienceSciThis is awesomeBad astronomyBrain pickingsUniverse TodaytorIt's okay to be smarttweetFb18EditPromoteShare to KinjaToggle Conversation toolsGo to permalinkHappy birthday, Carl Sagan! The legendary astronomer, astrophysicist, cosmologist and science educator would have been 78 today. To celebrate, we've rounded up a handful of our favorite Sagan posts and curated some stellar content from other websites that are honoring him today. Feel free to contribute in the comments!This recorded message from Sagan to future explorers of Mars will cold-cock you right in the touchy feeliesShareTweet Kinja is in read-only mode. We are working to restore service.