In 1919, Edwin Hubble (1889-1953) accepted a staff position at the Mount Wilson Observatory, then home to the world's largest telescope. Using stars called Cepheid variables, he determined the distance to mysterious nebulae, providing critical evidence that they are not wisps of dust inside the Milky Way but independent galaxies. Observing these galaxies' spectra, he then determined that the farther away a galaxy is located, the faster it appears to move away, a principle known as Hubble's Law. Hubble studied mathematics and astronomy at the University of Chicago. He was one of the first Rhodes Scholars at Oxford University, where he studied law. After serving briefly in World War I, he returned to the University of Chicago and earned his doctorate degree in 1917.
This enduring work is the closest we can get to Edwin Hubble's personal thoughts as he broke open the boundaries of the universe in the early twentieth century. In this compelling summary of his historic observations of myriad galaxies swiftly moving outward in space-time, we see both his awe--and his doubts--over the new and surprising cosmos he had revealed. A true classic of scientific literature. --Marcia Bartusiak, MIT, author of The Day We Found the Universe <br><br>--Marcia Bartusiak