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On Ganymede, Jupiter's moon, is located a vast ocean - VIDEO PDF Print E-mail
Sunday, 15 March 2015 21:00

NASA space telescope "Hubble" scientists gave evidence of a subsurface ocean of salt water on Ganymede, the largest of Jupiter's Moons. It is estimated that water reserves in the subsurface ocean may exceed the total reserves of water present on the entire surface of the Earth.

Ganymede is the largest natural satellites of the planets of the solar system and the only natural satellite of a planet having its own magnetic field. This magnetic field leads to the appearance of auroras, which are colored stripes of hot, electrified gas, observed near the poles of the Moons of Jupiter. Since Ganymede is located close to Jupiter, it is also covered by magnetic field lines of the giant planet. When Jupiter's magnetic field is changing, these changes lead to "jiggle" auroras on Ganymede.

Watching these "rockings" two different auroras on Ganymede, a new study, scientists have determined that under the surface of Ganymede has large reserves of salt water has a marked effect on the magnetic field of Jupiter's Moon.

A team of researchers led by Dzhoahimom Saur from the University of Cologne, Germany, used the space telescope "Hubble" to use it to look deep into the bowels of Ganymede.

According to scientific estimates made on the basis of these observations, the thickness of the subsurface ocean on Ganymede is about 100 kilometers (by comparison, the average depth of the oceans on Earth is about 4 kilometers), and the depth of the ocean beneath the surface of Jupiter's largest Moon is about 150 kilometers .

The study was published in Journal of Geophysical Research: Space Physics.


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