Jupiter’s Moon Has More Water Than All Of Earth’s Surface Water Combined, Believes NASA
Presence of human life elements at other places in the space have always fancied scientists at NASA and all other space enthusiasts. Likewise a salty subterranean water reserve is found to exist on the biggest moon in the space, Ganymede, of the Jupiter planet.
It is believed by the officials at NASA that the ocean under the crust of Ganymede probably has more water than all of Earth’s surface water combined. Quantitative analysis shows that the ocean is 60 miles (100 kilometers) thick, 10 times the depth of Earth’s oceans. These discoveries were made as a result of the latest findings by scientists working with the Hubble Telescope.
This situation maybe of special interest to all scientists who’re looking out for such elements of life outside earth. “The solar system is now looking like a pretty soggy place,” Jim Green, NASA’s director of planetary science, said during a news teleconference.
So this discovery didn’t come all of a sudden, it was suspected long ago that Ganymede has substantial water presence under its surface. It was during 2002 when The Galileo probe measured Ganymede’s magnetic field and the results supported the claim that the moon might have an ocean. The recent Hubble Telescope Discovery further reinforces the claim, says NASA.
A lot of magnetic field action comes into play when such discoveries happen. Ganymede is the only moon to harbor its own magnetic field. This magnetic field gives rise to aurorae, bands of hot electrified gas which circle the moon’s north and south poles. Since Jupiter embeds Ganymede in its core, so when Jupiter’s magnetic field varied, researchers were able to see the aurorae on Ganymede “rock” back and forth with the help of Hubble telescope.
But what basically indicated presence of a water reserve was the fact that Ganymede aurora didn’t rock as much as expected. It was concluded that the water content may have dampened (slowed) the Ganymede aurora created by Jupiter.
Aurora study has shown scientists another method to discover alien-planets rich in water resources, Heidi Hammel, executive vice president of the Association of Universities for Research in Astronomy, said during the teleconference. Astronomers might be able to detect oceans on planets near magnetically active stars using similar methods to those used by Saur and his research team, Hammel added.
“By monitoring auroral activity on exoplanets, we may be able to infer the presence of water on or within an exoplanet,” Hammel said. “Now, it’s not going to be easy—it’s not as easy as Ganymede and Jupiter, and that wasn’t easy. It may require a much larger telescope than Hubble, it may require some future space telescope, but nevertheless, it’s a tool now that we didn’t have prior to this work that Joachim and his team have done.”