There were no certainties when it came to Apollo 11. President Nixon knew this of course, and according to The Daily, had his writers prepare this speech just in case the astronauts did not return. Fortunately, he never had to give it.
Since the beginning of the Space Age, astronomers and astronauts have searched for planets in the solar system that could support life much like Earth does. Now, astronomers in Europe believe that they've discovered just such a planet...