On Ganymede, Jupiter’s largest moon has an underground ocean. Hubble Space Telescope has provided evidence for the theory of the ’70s NASA scientists called the discovery of a milestone, especially since it has space telescope, not a sampler operating on the surface of the object.
Ganymede is the largest moon of Jupiter, but also the record holder in the solar system. Alone has its own dipole magnetic field that gives rise to the auroras, ribbons electrically charged gas to the north and south poles. Due to the proximity of Jupiter’s moon is subjected to a magnetic interaction of the planet. Changes in Jupiter Ganymede cause a reaction. On the basis of these fluctuations scientists to determine that the crust of the satellite is a large amount of salt water, which affects the magnetic field – explains NASA.
The idea of using the Hubble Space Telescope to study the structure of Ganymede, the team came up with Joachim Saura at the University of Cologne. The researchers discussed how to look “into” the moon using a telescope. The answer was to observe the magnetic field. “If you know the magnetic field, you will learn something about the interior of the Moon” – Saur said.
Scientists estimate that an underground ocean on Ganymede has a depth of 100 km, which is 10 times deeper than Earth’s oceans. It is located 150 km below the surface of the moon, consisting mainly of ice.
The hypothesis that the largest moon in the Solar System is the water formed in the 70s of the last century. First provided data supporting the theory in 2002. Galileo spacecraft. However, the measurement was too short to unambiguously determine the estoppel. The new observations are carried out under ultraviolet light by the Hubble Space Telescope.
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Jupiter’s moon Ganymede is discovered by Galileo in January 1610. It is the largest moon in the Solar System. Exceeds the size of the planet Mercury.
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