President John F. Kennedy gets a lesson on the Saturn launch system from Wernher von Braun (center), a German rocket scientist who championed America's space exploration program, during a visit to Cape Canaveral on Nov. 16, 1963.
President Richard Nixon (right) and NASA Administrator Thomas O. Paine, aboard the USS Hornet, watch the Apollo 11 astronauts walk from the recovery helicopter to a quarantine facility on the ship on July 24, 1969.
Making an extremely long-distance call, President Ronald Reagan (seated at center) speaks with the crew of the second space shuttle flight from Houston in November 1981. He jokingly asked if they could stop by Washington en route to their California landing site so he could come along with them.
NASA Administrator Robert Froscoch (right) shows a model of the space shuttle to President Jimmy Carter, first lady Rosalynn Carter and daughter Amy during their visit to the firing room of the Launch Control Center at Cape Canaveral in October 1978.
Confined to a quarantine chamber aboard the USS Hornet after returning from the moon, Apollo 11 astronauts Neil Armstrong (from left), Michael Collins and Edwin Aldrin speak to President Richard Nixon on July 24, 1969.
From the roof of the Launch Control Center, President Bill Clinton and Hillary Clinton watch the launch of space shuttle Discovery on Oct. 29, 1998. Astronaut and Sen. John Glenn was on the flight, his second to space.