Saturdays June 22 and 29; July 20 and 27; August 17 and 24: Visitors to the Center can listen to nationally recognized space expert and Scottsdale resident Mr. John Kula as he talks about The Amazing Moon. His presentations are at 10:30 a.m. and 1:00 p.m. Free with Center admission. General admission is $4/adults; $3/children and seniors.

The Challenger Center, along with the recently announced McCall Museum of Art, is the only Smithsonian Institution affiliate in the metropolitan Phoenix area, is located at 21170 North 83rd Avenue, north of Union Hills, just off Loop 101. With the completion of Loop 101, there is easy access from the entire East Valley. The Center is on 83rd Avenue, between Beardsley and Deer Valley roads, adjacent to the campus of Sunrise Mountain High School. Information: 623-322-2001