Does alien life exist? Is time travel possible?How did the Universe begin and how might it end?Is the future pre-determined?These are just some of the fascinating questions posed in this richly illustrated book, which stretches across physics, biochemistry and cosmology. Each chapter considers a separate question and ends either with an answer, or if there is insuf?cient evidence for an answer, the author gives his ‘best guess’ answer. This new second edition, apart from being updated, also includes answers given by the ChatGPT arti?cial intelligence chatbot.For every question, be it time travel, multiple Universes, inter-galactic travel, or the end of the world, the author has tried to cover all possibilities before arriving at a conclusion. Everyone will have their own opinion but one thing is certain-Mysteries of the Universe will fascinate, educate, and stimulate. And as a free gift to readers, the author has included an original science ?ction short story at the end of the book.