Fox then travelled to the University of Berlin in 1905 for graduate studies in astronomy, before returning to Chicago, where he worked as an assistant astronomer at Yerkes Observatory and earned a Ph.D. in astronomy from the University of Chicago.
Fox then travelled to the University of Berlin in 1905 for graduate studies in astronomy. This was before. Fox then was returning to Chicago. He worked as an assistant astronomer at Yerkes Observatory. He earned a Ph.D. in astronomy from the University of Chicago.