Jupiter's moon Ganymede Brine The Ocean Has More than Earth

Astronomy Science ~ By using the Hubble Space Telescope, scientists have discovered a salty ocean lurking beneath the surface of Jupiter...

Astronomy Science ~ By using the Hubble Space Telescope, scientists have discovered a salty ocean lurking beneath the surface of Jupiter's largest moon, Ganymede.

Sea in Ganymede - buried under a thick crust of ice - can contain more water than all the water on Earth's surface when in combination, according to NASA officials. Scientists think that the sea has a depth of about 60 miles (100 kilometers), 10 times deeper than Earth's oceans, NASA added. The new Hubble findings also could help scientists learn more about the potential of an aqueous object in the solar system.

"The solar system now looks like a pretty wet," said Jim Green, director of NASA's planetary science, said in a teleconference. Scientists are particularly interested in learning more about the world of watery because life as we know it depends on water to thrive.

Illustration of Ganymede moon orbiting Jupiter. Hubble Space Telescope to detect the aurora in the month which is controlled by the magnetic field of Ganymede. Pictures released March 12, 2015./
Illustration of Ganymede moon orbiting Jupiter. Hubble Space Telescope to detect the aurora in the month which is controlled by the magnetic field of Ganymede. Pictures released March 12, 2015.
The scientists also found that the surface of Ganymede shows signs of flooding. The younger part of Ganymede is seen in the video map may have been formed by water overflowing from the interior of the moon through the fault or cryo-volcano at some point in the history of Ganymede, said Green.
Ganymede Interior
Ganymede Interior

Scientists have long suspected that there are oceans of liquid water beneath the surface of Ganymede - the largest moon in the solar system, has a diameter of about 3,273 miles (5,268 kilometers). Galileo craft measuring the magnetic field of Ganymede in 2002, provides some data to support the theory that the moon has an ocean. Evidence has just announced from the Hubble telescope is the most convincing data supporting the theory of ocean beneath its surface, according to NASA.

Scientists using Hubble to monitor the aurora Ganymede, the band of light at the poles created by the magnetic field. Aurora month was also influenced by Jupiter's magnetic field due to its proximity.

When the magnetic field of Jupiter changed, as well as Ganymede. The researchers were able to see two aurora that sways back and forth with the Hubble. Aurora Ganymede not sway as much as expected, so as to monitor the movement, the researchers concluded that under the ocean's surface may be responsible for changes dampen aurora created by Jupiter's Ganymede.

Hunting aurora in the world has the potential to help identify alien planet rich in water in the future, said Heidi Hammel, executive vice president of the Association of Universities for Research in Astronomy, said during the teleconference. Scientists may be able to search for exoplanets wobble aurora in potentially have water using lessons from Hubble observations on Ganymede.

Astronomers may be able to detect exoplanets near the ocean in magnetically active parent star by using a method similar to that used by Saur and his research team, said Hammel added. "By monitoring the auroral activity on exoplanets, we may be able to infer the presence of water on or in an exoplanet," Hammel said. "Now, it will not be easy as Ganymede and Jupiter. This may require a much larger telescope Hubble.

Jupiter's moons are popular targets for space missions in the future. The European Space Agency plans to send a spacecraft called JUICE - Jupiter Icy moons Explorer - to Jupiter and its moons in 2022. JUICE designed to examine Europa, Callisto and Ganymede. NASA also has an eye on the Jupiter system which plans to send a spacecraft to Europa in the mid 2020s.

NASA also will celebrate its 25th anniversary this year Hubble telescope.

"This discovery marks an important milestone, highlighting what Hubble can achieve," said John Grunsfeld, assistant administrator for NASA's science missions, said in the same statement. "In 25 years in orbit, Hubble has made many scientific discoveries in our solar system. A deep ocean under the ice crust Ganymede open the possibility that more attractive for life beyond Earth."
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Astronomy Science: Jupiter's moon Ganymede Brine The Ocean Has More than Earth
Jupiter's moon Ganymede Brine The Ocean Has More than Earth
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