'LOEB IS AN ASTRONOMICAL SHERLOCK HOLMES' Washington Post
'A JOY IN CONJECTURE AND AN OMNIVOROUS SPIRIT OF INQUIRY. . . CARL SAGAN WOULD HAVE LIKED THIS BOOK' The Times

In 2017, Avi Loeb, Chair of Harvard's Astronomy Department, went public with a theory that shook the scientific community - our solar system has been visited by advanced alien technology. His provocative and persuasive argument (and internationally bestselling book Extraterrestrial) has opened thousands of minds to the existence of intelligent life beyond Earth. This book tackles the huge question of what happens next?

Long the stuff of science-fiction, here at last is the science fact. From advances in deep space probes to ongoing searches for extraterrestrial technology in our night sky, through the latest heated debates over the existence of Unidentified Aerial Phenomena, Interstellar offers a thrilling, front-row view of the technology and the ideas currently preparing us for contact with alien civilizations. Providing the first realistic and practical blueprint for how that might actually occur, Professor Loeb lays out the profound implications of our becoming - or not becoming - an interstellar species. In an urgent, eloquent appeal for more proactive engagement with the outer universe, he powerfully contends why we must seek out other life forms, and in the process, choose who and what we are within the universe.

Combining cutting-edge science, physics, and philosophy, Loeb takes us on a mind-bending journey through the furthest reaches of science, space-time, and the human imagination. Interstellar is an eye-opening, necessary look at our future that proves, once again, that scientific curiosity offers the key to our survival.

'Loeb is surely correct. . . scientists studying the vastness of the cosmos should entertain risky ideas more often, for the universe is undoubtedly more wild and unexpected than any extremes conjured by the human imagination' Economist
'A COMPELLING ARGUMENT FOR A MORE OPEN-MINDED APPROACH TO SCIENCE - A COMBINATION OF HUMILITY AND WONDER' New Statesman

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Praise for Extraterrestrial:

Compelling . . . The book is not so much a claim for one object as an argument for a more open-minded approach to science - a combination of humility and wonder

"Skeptics should take seriously the meticulous defense of the alien origin story offered in Extraterrestrial . . . You don't have to share his conviction to be impressed by the breadth of his argument" - Washington Post

"[Avi Loeb is] the world's 'Leading Alien Hunter'." - CNN

"Readers of grand speculations by the likes of Freeman Dyson and Stanislaw Lem will find nothing in Interstellar to make them blink . . . Loeb, who has spent a career writing about black holes, dark matter and the deep time of the universe, argues that unless we go looking for extraterrestrials, we're never going to find them. His dating metaphor grew on me: are we to be cosmic wallflowers, standing around on the off-chance that some stranger comes along? Or are we going to go looking for things we'll never spot without a bit of effort?" - New Scientist