Captivating experiments, passionate debates, and thrilling dialogues! "Not only on Earth, but also in the heavens, there can be no emptiness, for an empty space would be useless, and one would then be forced to believe in the useless works of God in nature." The book brings to life a tumultuous decade of science. Researchers like Galileo Galilei, Gasparo Berti, Evangelista Torricelli, and Blaise Pascal embark on a quest for the vacuum. They conduct experiments that are among the highlights of scientific history. The deeper they delve into the wonder of the vacuum, the more fiercely the opponents of a vacuum resist. The researchers battle with experiments while the opponents take refuge behind Aristotle. The philosopher had taught: Nature abhors a vacuum, tolerates no emptiness - in Latin: horror vacui! Does a new understanding contradict this?.