A family photograph has been on the moon's surface for more than 40 years.
Charles Duke - an astronaut on the Apollo 16 - left behind the picture on April 23, 1972 on his final mission.
On the back of the photograph, he wrote: "This is the family of Astronaut Duke from Planet Earth. Landed on the Moon, April 1972."
The image itself features Duke, his wife and their sons Thomas and Charles.
The photograph, which was taken with a Hasselblad camera, was discovered in the Project Apollo Image Archive.
It was reported late last year that NASA's Curiosity rover may have made an important discovery on Mars.