Space sailor Buzz Aldrin and the Florida Institute of Technology are planning to colonize Mars within 25 years.
More specifically, he's shooting for 2039, the 70th anniversary of his own Apollo 11 moon landing, although he admits the schedule is "adjustable".
He envisions using Mars' moons, Phobos and Deimos, as preliminary stepping stones for astronauts. He said he dislikes the label "one-way" and imagines tours of duty lasting 10 years.
"The Pilgrims on the Mayflower came here to live and stay. They didn't wait around Plymouth Rock for the return trip, and neither will people building up a population and a settlement" on Mars.
