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Do aliens exist? Almost certainly, yes. What's more, there may well be many inhabited worlds, because the universe is infinite, and in an infinite universe, absolutely everything, including life, is not only possible but inevitable.

John Willis, a Canadian astronomer and science populariser, discusses where extraterrestrial life might be hiding and how to search for it. Drawing on classic works of astrobiology and analysing the latest discoveries made by the Kepler telescope, the Curiosity rover, and the New Horizons probe, Willis explores the prospects for detecting life in our galaxy. He offers a glimpse beneath the icy caps of Mars, invites us to dive into the sub-surface oceans of Europa and Enceladus, encourages us to imagine alternative chemistry that could support life on Saturn's moon Titan, and weighs the chances of finding a "second Earth" among the billions of exoplanets outside the solar system.

"All These Worlds Are Yours" is a thorough book that covers everything science knows today about the search for alien life.