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There are no ALIENS from outer space visiting earth, lolol


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52 minutes ago, jasson621 said:

There are aliens and there is other life in the universe, they haven't visited Earth though. 

The nearest planets that could sustain life are millions of light years away.  Unless someone can prove Einsteins’s Theory of Relativity is wrong, no matter can travel faster than the speed of light.  That would mean it would take millions of years at top speed just to get here.  People who believe aliens have been here either think they know more than Einstein or don’t understand physics.

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11 minutes ago, MonkeyF0cker said:

The nearest planets that could sustain life are millions of light years away.  Unless someone can prove Einsteins’s Theory of Relativity is wrong, no matter can travel faster than the speed of light.  That would mean it would take millions of years at top speed just to get here.  People who believe aliens have been here either think they know more than Einstein or don’t understand physics.

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10 minutes ago, MonkeyF0cker said:

The nearest planets that could sustain life are millions of light years away.  Unless someone can prove Einsteins’s Theory of Relativity is wrong, no matter can travel faster than the speed of light.  That would mean it would take millions of years at top speed just to get here.  People who believe aliens have been here either think they know more than Einstein or don’t understand physics.

Millions of light years? cmon - the milky way - our galaxy is supposedly 30 or 40,000 light years across, holding perhaps 200 billion stars with trillions of planets, we can only detect planets(through their orbital wobble) out to a distance of maybe 15 light years. Even then we can only detect large mass planets that are unlikely to be habitable.

So we've "examined" maybe a couple hundred planets out of 200 billion plus.

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Another candidate around saturn.

Cassini Finds Global Ocean in Saturn’s Moon Enceladus

NASA

NASA

Sep 15, 2015
RELEASE15-188
 
Illustration of the interior of Saturn's moon Enceladus showing a global liquid water ocean between its rocky core and icy crust
Illustration of the interior of Saturn’s moon Enceladus showing a global liquid water ocean between its rocky core and icy crust. Thickness of layers shown here is not to scale. Credits: NASA/JPL-Caltech

A global ocean 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 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 vapor, 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. The research is presented in a paper published online this week in the journal Icarus.

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, Ithaca, New York, and lead author of the paper.

Cassini scientists analyzed 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,” he said.

The mechanisms that might have prevented Enceladus’ ocean from freezing remain a mystery. Thomas and his colleagues suggest a few ideas for future study that might help resolve the question, including the surprising possibility that tidal forces due to Saturn’s gravity could be generating much more heat within Enceladus than previously thought.

“This is a major step beyond what we understood about this moon before, and it demonstrates the kind of deep-dive discoveries we can make with long-lived orbiter missions to other planets,” said co-author Carolyn Porco, Cassini imaging team lead at Space Science Institute (SSI), Boulder, Colorado, and visiting scholar at the University of California, Berkeley. “Cassini has been exemplary in this regard.”

The unfolding story of Enceladus has been one of the great triumphs of Cassini’s long mission at Saturn. Scientists first detected signs of the moon’s icy plume in early 2005, and followed up with a series of discoveries about the material gushing from warm fractures near its south pole. They announced strong evidence for a regional sea in 2014, and more recently, in 2015, they shared results that suggest hydrothermal activity is taking place on the ocean floor.

Cassini is scheduled to make a close flyby of Enceladus on Oct. 28, in the mission’s deepest-ever dive through the moon’s active plume of icy material. The spacecraft will pass a mere 30 miles (49 kilometers) above the moon’s surface.

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