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The book, which was completed by his family after his death, provides answers to questions that Hawking said he received most often during his stay on Earth.
Among other bombs left by the British scientist to his readers, there is the belief that extraterrestrial life exists, that artificial intelligence could outmaneuver humans and that time travel can not be ruled out.
"There is no God, no one directs the universe," he writes in "Brief Answers to Big Questions".
"For centuries, it was believed that people with disabilities like me lived under a curse inflicted by God," he adds. "I prefer to think that everything can be explained in another way, by the laws of nature."
Hawking has suffered from Amyotrophic Lateral Sclerosis (ALS), a neurodegenerative disease also known as Lou Gehrig's disease, for most of his adult life.
The scientist died while he was still working on the book, which his family and colleagues finished with the help of his extensive personal archives.
& # 39; Looking more and more inside & # 39;
If Hawking spoke of his lack of belief in God during his life, many of his other answers are more surprising.
"There are intelligent life forms out there," he writes. "We must be careful not to answer until we have developed a little further."
And it leaves open the possibility of other phenomena.
"A trip back in time can not be ruled out according to our current understanding," he says. He also predicts that "over the next hundred years we will be able to travel anywhere in the solar system".
"He realized that people just wanted him to answer those questions," Lucy Hawking, the daughter of the scientist, who helped to make the book, told CNN.
Hawking saw the world on the verge of a "profound change in depth" when he died, she added, adding, "He is asking us not to go blindly into the future." What is the performance of the race? human in the use of technological advances for the sake of ordinary people? "
In an address prepared by Hawking and aired Monday in London, the scientist also turned to the world that he was leaving.
"With Brexit and Trump exerting new strengths in immigration and educational development, we are witnessing a worldwide revolt against experts, including scientists," Hawking said.
His biggest concern, said his daughter, "is the division we have become," adding, "He comments on how much we seem to have lost the ability to look outward and we are turning more and more to ourselves ".
Hawking's latest message to readers, however, is optimistic.
Attempt to answer the question "How are we shaping the future?" In the last chapter of the book, the scientist writes: "Do not forget to look at the stars and not at your feet."
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