echo ''; Clamorworld » In everyday life every one of us comes across various experiences, incidents which we either don’t share with anyone or share with family members and friends. Print media, electronic media and various medium shows the news, but its ends up showing one sided of the story. We never come to know the other side of story. With so much happening every day, every second across our neighborhood, society, and world it’s difficult for the news media to cover all the news. Many times we have felt wish we could share our voice, opinion, thoughts with the world. Many a times we have felt the frustration, anger and helplessness for not being able to do anything about an incident. Have you ever felt, for a good cause, you need support, but don’t know how to garner the support and attention. So, now you have an option “www.Clamorworld.com“. This is a platform to share everything you want to. A website 100% runs by the people for the people. The world is waiting to listen to your voice, the voice which has kept you suppressed so far. If you do not want to share the incident, event personally, please send it to us at contact@clamorworld.com, and we will share it on your behalf and assure to keep your name confidential. Let’s make this world a peaceful and a happy place to live. » Global’ ocean containing vast liquid water reservoir found in Saturn’s moon: Nasa

Global’ ocean containing vast liquid water reservoir found in Saturn’s moon: Nasa

 

WASHINGTON: A ‘global’ ocean containing a vast liquid water reservoir lies beneath the icy crust of Saturn’s geologically active moon Enceladus, according to new research using data from Nasa’s Cassini mission.

Researchers found that the magnitude of the moon’s very slight wobble, as it orbits Saturn, can only be accounted for if its outer ice shell is not frozen solid to its interior, meaning a global ocean must be present.

The finding implies the fine spray of water vapour, icy particles and simple organic molecules Cassini has observed coming from fractures near the moon’s south pole is being fed by this vast liquid water reservoir.

Previous analysis of Cassini data suggested the presence of a lens-shaped body of water, or sea, underlying the moon’s south polar region.

However, gravity data collected during the spacecraft’s several close passes over the south polar region lent support to the possibility the sea might be global.

The new results – derived using an independent line of evidence based on Cassini’s images – confirm this to be the case.

This was a hard problem that required years of observations, and calculations involving a diverse collection of disciplines, but we are confident we finally got it right,” said Peter Thomas, a Cassini imaging team member at Cornell University, New York, and lead author of the paper.

Cassini scientists analysed more than seven years’ worth of images of Enceladus taken by the spacecraft, which has been orbiting Saturn since mid-2004.

They carefully mapped the positions of features on Enceladus – mostly craters – across hundreds of images, in order to measure changes in the moon’s rotation with extreme precision. As a result, they found Enceladus has a tiny, but measurable wobble as it orbits Saturn.

Because the icy moon is not perfectly spherical – and because it goes slightly faster and slower during different portions of its orbit around Saturn – the giant planet subtly rocks Enceladus back and forth as it rotates.

The team plugged their measurement of the wobble, called a libration, into different models for how Enceladus might be arranged on the inside, including ones in which the moon was frozen from surface to core.

“If the surface and core were rigidly connected, the core would provide so much dead weight the wobble would be far smaller than we observe it to be,” said Matthew Tiscareno, a Cassini participating scientist at the SETI Institute, Mountain View, California, and a co-author of the paper.

“This proves that there must be a global layer of liquid separating the surface from the core,” said Tiscareno.

The mechanisms that might have prevented Enceladus’ ocean from freezing remain a mystery.

Thomas and colleagues suggest the possibility that tidal forces due to Saturn’s gravity could be generating much more heat within Enceladus than previously thought.

The research was published in the journal Icarus.

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