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Time travel was once considered scientific heresy, and I used to avoid talking about it for fear of being labelled a 'crank.'

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Time travel used to be thought of as just science fiction, but Einstein's general theory of relativity allows for the possibility that we could warp s...more

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I think the human race doesn't have a future if it doesn't go into space.

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For millions of years, mankind lived just like the animals. Then something happened which unleashed the power of our imagination. We learned to talk a...more

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Even if it turns out that time travel is impossible, it is important that we understand why it is impossible.

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I'm not afraid of death, but I'm in no hurry to die. I have so much I want to do first.

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A zero-gravity flight is a first step toward space travel.