On Monday, NASA released the complete set of science data from the Lunar Reconnaissance Orbiter Camera’s first six months of observations, consisting of more than 100,000 lunar images. Straight away, Phil Stooke from the University of Western Ontario began scanning the images to help find a "missing" Russian rover on the lunar surface, the Lunokhod 2. It didn't take him long to discover the tracks left by the lunar sampler 37 years ago after it made a 35-kilometer trek. "The tracks were visible at once," said Stooke.