The many wonders of the Red Planet will be explored July 16, 2004 when the National Air and Space Museum celebrates Mars Day! with a host of activities at the museum’s flagship building on the National Mall in Washington and the new Steven F. Udvar-Hazy Center in Chantilly, Virginia. The annual Mars Day! festivities give the public a chance to learn the latest about our “next-door neighbor” from the staff of the museum’s Education Division, Space History Division and Center for Earth and Planetary Studies (CEPS).