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Mars is the only place in the solar system where it's possible for life to become multi-planetarian.

Mars is much closer to the characteristics of Earth. It has a fall, winter, summer and spring. North Pole, South Pole, mountains and lots of ice. No one is going to live on Venus; no one is going to live on Jupiter.

I am confident that life once thrived on Mars and may well still exist there today.

If Mars formed life, then life on Earth could have been seeded by life on Mars, making every life form on Earth descended from Martians.

As far as whether there is life there on Mars or whether there was actually ever life there, I don't know. It would be great to find out, though.

When we get there, if we don't find any life on Mars, from that point on there will be life on Mars because we'll bring it there, whether it's germs and leftover urine bags, whatever it is.

Mars is key to humanity's future in space. It is the closest planet that has all the resources needed to support life and technological civilization. Its complexity uniquely demands the skills of human explorers, who will pave the way for human settlers.

The society of life on Mars, or the challenge of making Mars more livable, will have significant benefits on our attempts to modify and change in some ways the environment here on Earth.

Of course, it's a dream to go to Mars. I want to find out whether there was life there or not. And if there was, then why did it die out? What sort of catastrophe happened?

I don't take Mars One seriously at all.