On the surface of the Moon were found several giant “traces”, unlike the human and very surprising astrophysicists. Throughout history, only a dozen astronauts visited the natural satellite of the Earth, so scientists do not understand who could inherit the moon.
One of the last people who visited the Moon was an American astronaut Harrison Schmitt, a member of the Apollo 17 mission. As a geologist by profession, Schmitt managed to collect more than 700 samples of soil natural satellite, making the longest lunar walk. Using the lunar rover, Schmitt and his colleague Eugene Cernan rolled more than twenty miles on the moon, leaving many traces that can still be seen on the surface of the satellite.
Traces of Schmitt and Cernan were recorded on the moon in 2009, when the satellite was mapped by the probe Lunar Reconnaissance Orbiter. Looking at the traces, preserved in large numbers, the astronauts joked that the moon as if someone had visited long before people.
But at some point, it was not a joke – NASA noticed strange traces in thirty miles from the landing site of Apollo 17. Huge footprints are not very similar to the human ones, so the version that they were left by Schmitt and Cernan, who deviated from the route, was immediately discarded. The only possible explanation is that the strange footprints indicate the existence of a lava tube under the surface where the molten rock flowed billions of years ago.