Notes

On cover: Everything you need to travel through space and time.
Summary: Have you ever wondered how the universe began? Or what it takes to put humans on the moon -- or even on Mars? What would you do if you could travel through space and time? Embark on the adventure of a lifetime in this collection of up-to-the-minute essays by the world's leading scientists including Professor Stephen Hawking himself, plus mind-blowing facts and out-of-this-world colour photographs.