The Known Unknowns

The Unsolved Mysteries of the Cosmos

By: Lawrence M. Krauss

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eBook | 11 May 2023

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Internationally known theoretical physicist and bestselling popular science writer Lawrence Krauss explores cosmology's greatest unanswered questions.

Three of the most important words in science are 'I don't know'. Not knowing implies a universe of opportunities – the possibility of discovery and surprise. Our understanding of cosmology has advanced immeasurably over the last five hundred years of modern science, yet many fundamental mysteries of existence persist. How did our Universe begin, if it even had a beginning? How big is it? What's at the bottom of a black hole? How did life on Earth arise? Are we alone? Is time travel possible?

These mysteries define the scientific forefront, the threshold of the unknown. To explore that threshold is to gain a deeper understanding of just how far science has progressed. In The Known Unknowns, internationally known theoretical physicist and bestselling popular science writer Lawrence Krauss explores cosmology's greatest known unknowns. Covering time, space, physical law, life and consciousness, Krauss introduces readers to the topics that will shape the state of science of the next few decades, and invites us to ponder and appreciate the universe in which we live.

About the Author

Lawrence M. Krauss is an internationally known theoretical physicist and the author of the New York Times bestselling books, The Physics of Star Trek and A Universe from Nothing, and The Physics of Climate Change. He has made significant contributions to our understanding of the Universe and has received numerous awards for his research and writing. He is currently President of the Origins Project Foundation and host of the Origins Podcast with Lawrence Krauss. He tweets @LKrauss1.