Big Questions about the Universe

How big is space, where does it end, and more thought-provoking questions. The questions in this book were curated by the staff at London´s Royal Observatory, to address all the most common - and a few uncommon - things that children want to know about space. Planets, moons, exploration and even some 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?´.