University of Washington - Seattle Campus is one of the most popular schools in the country for getting a master's degree in astronomy and astrophysics. UW Seattle is a very large public university located in the large city of Seattle. This isn't the only ranking where the school placed. It's also #1 in quality for master's degrees in astronomy and astrophysics in Washington. More information about a master’s in astronomy and astrophysics from University of Washington - Seattle Campus