LRO: Apollo 17 Landing Site Lithograph

Astronaut Buzz Aldrin, lunar module pilot, walks on the surface of the Moon.

Virtual tour of the Radiation Effects Laboratory at NASA’s Goddard Space Flight Center in Greenbelt, Maryland.

Katherine Johnson and other "Human Computers" played an integral role in the early days of America's space program.

Astronaut David R. Scott, right, commander of the Apollo 15 mission, gets a close look at the sample referred to as "Genesis rock."

Lunar Orbiter 1 new of the Moon and crescent Earth. This is the first good image of the Earth taken from the vicinity of the Moon, 380,000 km away.

Ranger 9 was the last of the Ranger series of spacecraft launched in the 1960s to explore the moon and was designed to image and impact the moon's crater Alphonsus. Includes imagery from the onboar...

This view of the rising Earth greeted the Apollo 8 astronauts as they came from behind the moon after the lunar orbit insertion burn.

Lunar Orbiter 1 view of the Korolev basin on the far side of the Moon.

Video: Scientists have discovered that water is being released from the Moon during meteor showers.

Mosaic of images taken by the robotic lunar lander Surveyor 7

This visualization of patterns of daylight and shadows at the Moon's poles over a period of two lunar days.

NASA's LADEE mission came to an end as the spacecraft executed a planned de-orbit into the surface of the Moon at nearly three thousand, six hundred miles per hour.

Apollo 8 Launch

Astronaut John W. Young, commander of Apollo 16, leaps from the lunar surface as he salutes the United States flag.

A view of the Apollo 11 lunar module "Eagle" as it returned from the surface of the Moon to dock with the command module "Columbia".

Oblique view of Copernicus crater from Lunar Orbiter 

This photograph of astronaut Neil A. Armstrong, Apollo 11 commander, was taken inside the Lunar Module (LM) while the LM rested on the lunar surface.

Engineers prepare NASA's Lunar Atmosphere and Dust Environment Explorer (LADEE) spacecraft for acoustic environmental testing.

Researchers hope "LADEE" will solve a mystery that has been puzzling them since the days of Apollo.

This graphic highlights locations on the moon NASA considers "lunar heritage sites" and the path NASA's Gravity Recovery and Interior Laboratory spacecraft will take on their final flight.

Converting stereo images from the Lunar Reconnaissance Orbiter into 3D maps of the Moon's surface.

View of a lightning bolt during the launch of Apollo 12

Topography of Earth's moon generated from data collected by the Lunar Orbiter Laser Altimeter, aboard NASA's Lunar Reconnaissance Orbiter, with the gravity anomalies bordering the Procellarum regio...

Connecting the history of Apollo 17 to NASA's current Lunar Reconnaissance Orbiter mission through the eyes of astronaut Harrison Jack Schmitt.

First full-frame image of the Moon taken by the Ranger 8 camera A from a distance of 2,573 km.