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The sea beneath Jupiter’s moon Ganymede was discovered by the Hubble space telescope. The largest moon in our solar system apparently hides the ocean beneath the surface.
Since the 1970s, scientists have speculated if Ganymede has an ocean below its surface. To date, the evidence gathered is during a short crossover flight using a Galileo spacecraft in the early 2000s.
Hubble Confirms Ocean Under Jupiter’s Moon Ganymede
The Hubble Space Telescope provides data on how uroto light dances around Jupiter’s moons. The existence of a sea below the surface of Jupiter Ganymede allows this planet to be potentially habitable.
According to the bbc.com site, for the 2030s, European Juice robot research will be conducted to orbit the moon. NASA’s Galileo mission will show the moon with a width of 5,3000 km has a hidden sea.
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Damping Effect
Hubble managed to track the properties of Ganymede’s magnetic field. How the field attracts space particles. So that around the north and south poles of the satellite produce ultraviolet rays.
The researchers used the wobble model of the objects observed by Hubble. So they can draw conclusions about the internal structure of the moon. However, the intrinsic magnetic field is intertwined between the auroral rocks and Jupiter, as a result of their interactions.
The model results show that the aurora only swayed two degrees from time to time. So there is no ocean presence. It should be a six degree wobble. Because Jupiter’s field induces a salty water secondary field and will offset the influence of this largest planet.
Magnetic Interaction
Aurora is a colorful result of charged particles, which will then interact with the atmosphere. So the presence of aurora does not necessarily indicate the existence of the sea under Jupiter’s moon Ganymede.
The presence of a conductive and salty ocean will lock the aurora in an electrically stable position. Indeed the ocean will change the behavior of the aurora. The aurora would sway about six degrees around the moon as it orbited the planet Jupiter, if there were no ocean on Ganymede.
Ganymede is almost as big as Mars. However, it is the only moon in the Solar System that has its own magnetic field. The atmosphere is thin and rich in oxygen.
The thickness of the ocean is 100 km with the salt contained in it about 5 grams per one liter of water. But it could be that the ocean is only 10 km long but the number of grams is 10 times more.
The idea of whether there is an ocean beneath Jupiter’s moon Ganymede is an interesting one. Because water is a source of life. However, it still requires other energy sources and some complex carbon chemistry.
One of the main goals of the European Space Agency’s Juice robot is to understand the ocean. The robot weighs billions of pounds and will arrive on Ganymede in 2030.
To understand Ganymede’s magnetic field in more detail, the orbiter is equipped with sensitive magnetometers and radar instruments. So you can see the position of the bottom of the ice crust. In addition, this robot will also perform gravity measurements.
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Hidden Oceans
The sea below the surface of Jupiter’s moon Ganymede is probably 100 miles away. It is possible that Ganymede does not have a hydrothermal system like Enceladus. So this place is not ideal for life.
Information from Hubble has represented the best evidence for Ganymede’s hidden ocean. This is a statement from Heidi Hammel, of the Association of Universities for Astronomical Research, Washington DC.
Previous research from Galileo suggested if there is a volume of water. However, there is some ambiguity involved.
However leaving some ambiguity in the data to confirm the existence of oceans by NASA scientists. Then scientists were able to collect more than seven hours of data using Hubble, so that they could study the auroras in the moon’s thin atmosphere.
Ganymede is one of the objects in our Solar System and hides the ocean beneath its surface. These include Pluto and Ceres, Saturn’s moons Enceladus, Titan and Limas, and Neptune’s moon Triton which is considered to have a sea of water. So our solar system looks like a pretty wet place.
For the next mission, the robot Juice will take a closer look at Jupiter’s moons. Then observe whether there is an ocean under Jupiter’s moon Ganymede. (R10/HR Online)
Publisher: Jujang
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