Northern Arizona astronomy: Johannes and Elisabetha Hevelius - Williams News


Williams News

Northern Arizona astronomy: Johannes and Elisabetha Hevelius
Williams News
In 1639, at the age of 28, he became interested in astronomy, at the time a science which was almost entirely made up of well-to-do amateurs. Two years later, he constructed an observing platform, which spanned the roofs of three buildings he owned, ...