Mount Wilson: The Mountain That Changed How We See the Universe #california 5,710 feet above Los Angeles sits Mount Wilson, home to one of the most important scientific sites in American history. In the early 20th century, astronomers built the Mount Wilson Observatory to take advantage of the clear skies and steady air. From here, Edwin Hubble discovered that the Milky Way is just one galaxy among many and revealed that the universe is expanding. At the same time, Mount Wilson became the broadc