This exhibition reveals why a good clock is crucial to navigation -- for 18th-century mariners to current-day GPS users -- and how increasingly accurate timekeeping has influenced how we find our way.

This gallery features famous "firsts" and record-setting aviators during the 1920s and 30s.

Explore the achievements and challenges of human spaceflight in the United States during the space shuttle and space station era.

On view are six aircraft -- Military Unmanned Aerial Vehicles (UAVs).

This exhibition traces the history of commercial air transportation in the U.S. from 1914 to today and discusses how technological innovations have revolutionized air travel .

This exhibition presents the Wrights' technical achievements and examines the cultural impact of early powered flight.

This outdoor exhibition brings to life the great distances between the planets through a scale model of our solar system at one ten-billionth actual size .

Learn what scientists think our universe is like, how the present scientific view of the universe came to be, how our universe is being shaped today, and what mysteries remain.

This exhibition traces the competition in space between the U.S. and the former Soviet Union from its origins in the 1950s to the recent international cooperation.

This interactive gallery explains the basic principles of air and space flight through hands-on activities.

This gallery features the emergence of air power in World War I and reexamines the reality and  the romantic image of this war.

This exhibit features the Voyager, the first aircraft to fly around the world without landing or refueling.

This gallery traces the development of technology for viewing Earth from balloons, aircraft, and spacecraft.

Americans were wild about aviation in the 1920s and '30s, the period between the two world wars that came to be known as the Golden Age of Flight.

This gallery illustrates the first 40 years of jet aviation (1939-1979), including the evolution of commercial and military jet aircraft.

The early history of the airplane from antiquity through the first decade of powered flight is told.

This model of the starship Enterprise was used in the filming of the Star Trek TV show, which ran from 1966 to 1969.

This exhibition highlights the history and achievements of planetary exploration, both Earth-based and by spacecraft.

This exhibition traces NASA's manned space program from 1961 to 1972.

This exhibition gallery highlights NASA lunar surface exploration.