This structure consists of depressions, distributed almost concentrically on the surface of this moon of Jupiter. Through images obtained from probes 1 e Voyager 2 and Galileo, Japanese researchers from Kobe University have suggested that in fact this structure is an impact crater. If this is true, then we are talking about the biggest such crater identified in the solar system.
In addition to images, the researchers conducted a comprehensive simulation on the supercomputer of the National astronomical Observatory of Japan. The data indicates that, most likely, Ganymede was faced with a huge asteroid, with a diameter of 150 kilometers at a speed of 20 kilometers per second. That is, this concentricity structure is actually the remains of kratia.
More detailed data will be able to confirm this theory, scientists will be when the probe JUICE of the European space Agency will reach this mysterious moon in 2029 (if the launch will take place as planned, in 2022).
