New data captured by NASA's Juno probe shows further evidence of subsurface oceans on Ganymede, one of Jupiter's moons.
New observations of the Jovian moon Ganymede have uncovered further evidence that subsurface oceans could exist on the large moon. The detection was made during a flyby of Ganymede that Juno made in July of 2021 when it analyzed the moon using the probe’s Jovian Infrared Auroral Mapper spectrometer. These observations further increase the evidence pool scientists have gathered, suggesting a salty subsurface ocean can be found on the Jovian moon.
Jupiter's moon Ganymede Extensive water-rock interactions could cause this activity, the authors explain in their paper, and it would be “consistent with the presence of sodium salts as an independent indicator of aqueous alteration” inside of the moon. However, it is also possible that something else has caused these organics to appear on the surface of Ganymede.
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