The questions in this book were curated by the staff at the Royal Observatory Greenwich, in London, to address all the most common - and a few uncommon - things that children want to know about the universe and about outer space. It covers a mixture of basic questions about planets, moons, human exploration and the origins of the universe, as well as tackling really BIG questions such as 'How do black holes work?', 'Is it worth going to space?' and 'What's going to happen at the end of time?' Jo ...