The exciting and captivating narrative about a milestone period in human history, the discovery of the astonishing size and true nature of our universe.

On New Year's Day 1925, young Edwin Hubble announced his discovery that our universe was much larger than previously believed, with the revised estimate of its size being a thousand trillion times larger than before. This announcement caused a tremendous upheaval in the scientific community. Six years later, in a series of meetings at Mount Wilson Observatory, Hubble and other scientists convinced Albert Einstein that the universe is not static but instead expanding. In this book, Marsha Bartusak reveals the protagonists, the clashes of opinions, the ingenious ideas, the amazing technology, the radical research, and the wrong choices of the early sky researchers in their quest to uncover what many consider one of the most significant discoveries in the history of science.