Buzz Aldrin

Being first outside the spacecraft would bring much more responsibility, and I really wasn't looking for that. ”

Mars has a bit of air pressure; maybe we can build up that atmosphere to be a bit more accommodating to humans. ”

I think the climate has been changing for billions of years. ”

For the future, primarily, we must educate people in science, engineering, technology and math. ”

As someone who flew two space capsules and twice landed in the ocean, I can attest from personal experience how much logistics work is needed to get you home. ”