Safely look at the Sun and its features—such as sunspots and prominences—through a special set of filters on our telescope.
Take a closer look at the Sun
The Observatory is open to museum visitors every Saturday from 1:00 PM to 4:00 PM, weather permitting. Admission is included with Science Center admission.
Phone 410-545-2999 after 12:00 PM on Saturdays to find out if the Observatory will be open that day.
This WETA TV 26 production explores the history, mission and daily operations of Arlington National Cemetery, the final resting place for more than 400,000 Americans. This revered place honors the dead and brings great meaning to the living.Learn more →
Author Sue Eisenfeld discusses the creation of Shenandoah National Park, which involved displacing thousands of longtime residents from Virginia's Blue Ridge mountains.Watch now →
On a snowy night in 1965, Hyattsville, Maryland's DeMatha Catholic High School defeated Lew Alcindor's Power Memorial Academy in what many call the greatest high school hoops game ever played.Learn more →