If only Sagan were around today to learn of the fascinating insights we have discovered since his untimely death. Since his death we have discovered more than 4,000 exoplanets, we have discovered numerous candidates for harboring extraterrestrial life in our solar system alone (*cough* Europa *cough*), coinciding with that we have discovered that numerous minor planetary bodies have oceans of liquid water inside them, with some (*cough* Europa *cough*) even possessing the right chemical mix for complex life to occur on them, not merely simple life, but complex life, I`d be willing to bet that there are fully fledged animals inside Europa’s oceans.
Sagan would be amazed by what we have discovered since his death. He would be 83 years old today. The work he had done in popularizing science to the masses remains uncontested, he inspired millions of future scientists with his works, he was truly a gift from the gods. Rest in peace, Carl, you have earned it.