DAYTON, Ohio -- Visitors can learn about gravity during Family Day on Sept. 17, 2011, at the National Museum of the U.S. Air Force. (U.S. Air Force photo by Tech. Sgt. Matt Gilreath) Learn about gravity during this month's Family Day at museum by Sarah Swan National Museum of the U.S. Air Force 8/31/2011 - DAYTON, Ohio -- Visitors can celebrate the beginning of fall by learning all about gravity during Family Day from 10 a.m.-3 p.m. on Sept. 17 at the National Museum of the U.S. Air Force. Throughout the museum, check out aerospace demonstration stations that explain and even allow visitors to experience the concept of gravity in a variety of different situations. One station will allow participants to try on a real parachute and sit in an actual B-2 ejection seat. "Storytime" begins at 11:30 a.m. and 1:15 p.m. in the Early Years Gallery. Preschool and primary-grade children are invited to sit under the wings of airplanes, listen to stories about flight and make and fly a paper gyrocopter. From 1:30-3 p.m., visitors are invited to build their own paper parachutes. This activity takes place in the event area between the Korean War and Southeast Asia War Galleries. All activities are free and available for visitors of all ages! No advanced reservations are necessary. The National Museum of the United States Air Force is located on Springfield Street, six miles northeast of downtown Dayton. It is open seven days a week from 9 a.m. to 5 p.m. (closed Thanksgiving, Christmas and New Year's Day). Admission and parking are free. For more information about the museum, visit www.nationalmuseum.af.mil. NOTE TO PUBLIC: For more information, please contact the National Museum of the U.S. Air Force Education Division at (937) 255-8048. NOTE TO MEDIA: For more information, please contact Sarah Swan at the National Museum of the U.S. Air Force Public Affairs Division at (937) 255-1283.