My vision is for a fully reusable rocket transport system between Earth and Mars that is able to re-fuel on Mars - this is very important - so you don't have to carry the return fuel when you go there.
You can't 'control' a Mars mission from Earth. The Mars mission is going to have to be controlled by the people on Mars... There is just too much involved that is out of sight of Earth.
Yes, the money could be better spent on Earth. But would it? Since when has money saved by government redlining been spent on education and cancer research? It is always squandered. Let's squander some on Mars. Let's go out and play.
We only went to the moon for military reasons. The space enthusiasts of the day kept saying, "Oh, we're on the moon; we should be on Mars in ten years." That's if it was driven by exploration, but it's never been driven by exploration.
Chemical propulsion is obsolete to go anywhere other than the moon. Three days - that's acceptable. But for Mars, we need propulsion technologies to get us there in, say, 60 days - then spend whatever length of time we want to spend and return when we want to come home.
We're going to go to the moon. We're going to go on to Mars. We're going to set up a base on the moon. OK, but no money to pay for it, nothing in the budget for it. And so the decision made at that time was to cancel the whole shuttle program to save money, which I think was very, very short sighted.
President Bush wants to build a space station on the moon. And from the moon, he wants to launch people to Mars. You know what this means. He's been drinking again.
I think if Elon Musk asked me to go to Mars as a musician, to sing for people, I think I might just do that. A return ticket would be a nice incentive, though.
In my space journey, I felt vulnerable because we did not have anyone with medical background. When we make that big trip to Mars, we would need a doctor on board.
What comes after the moon? I think you can guess: Mars.
I think a Moon base is not necessary to get to Mars, but I think it will be helpful. It would give you a chance to develop and mature some systems; long duration, deep space stuff; and you're close enough to get some help, via radio from Earth.
President Bush announced we're going to Mars, which means he's given up on Earth.
Land on Mars, a round-trip ticket - half a million dollars. It can be done.
The space program needs a goal, and the goal should be humans to Mars.
Astronauts will remain the explorers, the pioneers-the first to go back to moon and on to Mars. But I think it's really important to make space space available to as many people as we can. It's going to be a while before we can launch people for less than $20 million a ticket. But that day is coming.
President Obama is launching a new $6 billion space policy that will ultimately take astronauts to Mars. Of course, it's $6 billion and $45 if the astronauts have a carry-on.
I personally think going to Mars, if it takes two years or two and a half years, that's doable. Certainly, the first people who go there, that's going to be a big motivator, being first getting to Mars.
I'm trying to get to Mars before everyone else.
In August 1994, I was invited to have dinner with House Minority Whip Newt Gingrich. At that time, I was a senior engineer working for Martin Marietta Astronautics in Denver, where I had been responsible for inventing a new plan called 'Mars Direct.'
People keep talking about how we have to go to Mars. We may want to go to Mars sometime.
I'd love to go into space again if there were a mission to Mars. I'd also love to go to a completely different planetary system, out of our solar system.
President Bush announced a billion dollar mission to the moon and Mars. He came up with a snappy new slogan - to drill where no man has drilled before.
[On President Bush's plan to get to Mars in 10 years] Stupid. Robots would do a better job and be much cheaper because you don't have to bring them back.
I'm never going to go to Mars, but I've helped inspire, thank goodness, the people who built the rockets and sent our photographic equipment off to Mars.
I hope I'm still alive to see an expedition set off for Mars.