After the hugely successful crowd sourcing venture Galaxy Zoo, the creator Oxford astrophysicist Chris Lintott is calling out to citizen scientist once again to take part in his latest project Moon Zoo.
The aim of Moon Zoo is to provide detailed crater counts for as much as the Moon's surface as possible. Volunteers are also asked to identify boulders, measure the craters and generally classify what is found in the images, and even spacecraft debris such as remnants of Apollo landings.
Moon Zoo uses about 70,000 high resolution images gathered by the NASA's newest lunar spacecraft, the Lunar Reconnaissance Orbiter, which captures the lunar surface with details as small as 50 centimeters across.
You you wish to take part in the classification of lunar surface features or just want to sift through the high resolution images, jump right in. After a quick sign up process (if you have signed up for Galaxy Zoo, you can use the same credentials) you will undergo a brief tutorial where you will be taught what to look for and how to identify craters.
You can read more about the project in their FAQ section and the Explore the Moon section provides some interesting read about the natural satellite.