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Ganymede Research Paper

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Recent research and observations have led to the conclusion that there is a vast underground ocean present on Ganymede, one of Jupiter's Galilean moons. The implications of this discovery are infinite. The presence of water suggests that life may be possible on Ganymede, which helps the search for habitable environments along. The discovery was made using the Hubble Space Telescope which observed the oscillations of Ganymede's aurorae in the ultraviolet spectrum, thus supplying pertinent information regarding the magnetosphere of Ganymede. Due to the numerous similarities between Ganymede and Europa, it may be possible that Europa also has water present or even an underground ocean much like Ganymede's. To come to a conclusion research will …show more content…
* Cassegrain reflector telescope [1]
* Orbits Earth [1]
* Is not hindered by the atmosphere [2] -Atmospheric distortion does not affect the findings of Hubble[2] -Can use wavelengths that are absorbed by the atmosphere [2] -Was able to oberserve Ganymede in the ultraviolet spectrum

The Aurora

* Interaction of solar wind and the magnetosphere [1]
* The magnetic field captures charged particles from the solar wind [2: pg 793]
* Some charged particles may then enter the atmosphere and the gas becomes ionised [2 : pg 793]
* The result is the emission of photons [1]
* Orange-red or green aurorae are produced with oxygen emission
* Blue or red aurorae are produced with nitrogen emission
* Aurorae on the surface of Ganymede have been observed

The Magnetosphere

* Magnetic fields of a planet or moon [1 : pg 271]
* Properties of some magnetospheres can be determined by the interaction of the solar wind and the magnetic field of the object [1 : pg 271]
* A weak magnetosphere was detected on Ganymede in 1996 [1 : pg 280]
* Magnetic fields can create electric currents, likewise electric currents can create magnetic fields [2 : pg 782] -Salt water has electrically conductive properties -This accounts for the creation of the magnetic field within the underground ocean on

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