" I have a message in a time bottle for the candidate who wins the 2016 election for the U.S. presidency. There’s opportunity to make a bold statement on the occasion of the July 2019 50th anniversary of the first humans to land on the moon: “I believe this nation should commit itself, within two decades, to commencing American permanence on the planet Mars. "

― Buzz Aldrin , Mission to Mars: My Vision for Space Exploration