How big is the universe? What would it be like to live on Venus? Is there life on another planet? What was the Big Bang? How does space travel work? Find out the answers to these and many more questions in this interactive lift-the-flap fact book. Embark on an epic journey through space and see the amazing Milky Way, find out what life is like for astronauts and take a closer look at life outside our galaxy ...could aliens really exist?