The Wraparound Universe

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With the appearance of Einstein’s theory of general relativity in the twentieth century, our understanding of the universe and its history was revolutionized, and cosmology was born as a scientific discipline. This book provides an engaging overview of the history of the subject and the science behind it for the general reader, leading to a question at the very frontier of research: what is the overall shape of the universe? Could the universe be wrapped around and reconnected to itself, leading to mirage stars as light twists along repeated paths through space? As the author explains, this is a question that modern experiments have started to address.