Last year, China's Chang'e-4 mission delivered a rover called Yutu-2 on the far side of the Moon, the part that never faces Earth.
The robotic contraption has since been studying the satellite. And now, in a major development, it has sent images showing a strange kind of material, something that looks quite different from the surrounding lunar regolith.
To delve more into this material, scientists took Yutu-2 closer to the material, which appears to be located in the center of a crater on the far side.
The position of the substance made it difficult for the rover to reach close enough, but its obstacle-avoidance camera, which keeps the vehicle from bumping into obstacles, did manage to capture and transmit a few shots.