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Possible Exploration to Europa in 2015
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37 / F / Fort Meade, MD
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Posted 6/26/07
The cracks are formed from the extreme push pull with jupiter and the other satellites.

Ok... to answer the Hypothetical

I think that Jupiters gravity and Radation would "evaporate" the planet if it were an ocean world. So all that would be left is a tiny little core that would plunge headlong into Jupiter - possibly creating another red spot!
Posted 6/26/07
I can't find the article, but I once read that Europa's color is difficult to reproduce inorganically, and that they've discovered bacteria on Earth that could survive over there that match the color almost exactly.

I will be really sad if they don't find water or bacteria.
killar 
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Posted 6/26/07
Okay I guess I'll jump on this (finally an intelligent thread)

I think the cracks and opening in the surface happen by tidal-like pulls from Jupiter. When large chunks of ice move they always crack. This happens on Earth, just look at any glacier. They always have cracks that can be miles deep.

Also do you guys think if Jupiters radiation is enough to destroy our probes and shit that it's enough to prevent life on Europa? I would think so but I sure hope not.

Another thing that confuses me is the fact that Jupiter also has Io which is hella hot in the same orbit. So one is hella cold and the other is crazy hot, maybe if they collided it would form something cool.
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Posted 6/26/07
^guess you missed my black hole theory topic killar. Owell Europa`s distinct differences make it so such a commodity in our solar system. From its young icy surface thats the brightest in the solar system. From possibly being a water planet. Also possibly altering the beliefs that their is life in places beside earth. So based on this observation Europa overshadows its satellite breatheren. I guess we can say thank you Galileo
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37 / F / Fort Meade, MD
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Posted 6/26/07
Random tidbit of info about galileo....

after he came forth with the information about Europa, Io, Ganymede, and Callisto, he feared persecution from the Church, since his discovery was saying that the Moons were orbiting Jupiter, which was contrary to church writings. He was considered the founder of Modern Science, and henceforth became the great debate... Science or God... Even though Galileo was only trying to prove the exsistance of God through Science, to learn and know God...

So there ya go.. .random scientific facts about the discoverer of Europa.

He was actually more interested in Io, and Callisto, since they were larger..

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Posted 6/27/07
isn't that moon europa named after a large amazing beautifully and is also have the same name for Europe - random nugget of info

about Jupiter's radiation wouldn't be that great because of th plantets gravity meanng the radiation can not advance up to a certain point meaning that europa may no be radiated by jupiters radiation

Also when europa rotates over Jupiter its magnetic field changes meaning that something in the water conducts electricity my be that substance is saltwater and its oceans are compared to the arctic showing striking similarities and Europa is the second of the four main moons of Jupiter. They are called the 'Galilean moons' because Galileo first spotted them through his telescope in 1610 and the water must have a heat source because sunlight can not reach it and if there was no heat source the whole planet would become ice this means that life on the planet is a real possiblity

the next section i have copied of a website

Europa is just one of many moons that revolve around the planet Jupiter. Jupiter's huge gravity holds it in orbit. But Europa also feels a pull from the other moons around the planet. Different forces, all pulling in different directions, yank Europa's surface out of shape as it travels through space. These are called 'tidal forces'.

These tidal forces heat up the moon's core. If the forces are strong enough, then the core could heat up enough to melt the frozen water surrounding it.

It's even possible that the ocean floor may contain hotspots called 'hydrothermal vents'. These are cracks in the ground that spout warm, nutrient-rich water. Hydrothermal vents on Earth harbour many simple life-forms. Could Europa be as fertile?
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37 / F / Fort Meade, MD
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Posted 6/27/07
Thank you, I said Fumeroles in my other thread but I was meaning Hydrothermal vents...
It's really been awhile since oceanography...

Isn't that interesting about the tidal pulls?

Imagine in about 100 billion years... the orbit of Jupiter will be significantly closer to the sun, causing tremendous tidal pulls on Europa...
Maybe this is what happened with earth? Maybe the formed theory and the comet theory (for earth's moon) is wrong. Maybe Earth was at one time a huge gas giant and it slowly orbited in causing drastic changes in the environment for the life, and that's the instigator for evolution! Maybe the giant leaps in the evolution were caused by planetal shifts! we're not talking the simple little procession here we're talking panet SHIFT. .like as in it's moving closer to the sun, it's orbit deteriorating because of the loss of burnt up gases from it being a gas giant... I"m rambling now.. and This post probably won't make any sense, but my fingers dont' type as fast as my brain works... so you get the jumblesd up mess of my brain.

<--- note the beer kiss!
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Posted 6/27/07
well this info (core heating up because of tidal pull)means that senbons 'hypothetical question' could actually happen
your theory is very elaborate and to me seams like it *could* be possibly how the earth was created

but it seems that europa now shows even more potential of life on it , but what would happen if the amount of moons increased orbiting jupitor would the moon over heat and become a full water moon and expand where it is being pulled
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37 / F / Fort Meade, MD
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Posted 6/27/07
If the tidal pull does become greater due to captures satellites, then the ice crust may thin down, and even begin evaporating, who knows with that evaporation, it might even create an Atmosphere. If there is enough nitrogen in the water under the ice crust, or even IN the ice crust... it might even be BREATHABLE air.
However, the amount of captured satellites in our system is getting lower and lower.
But in a few billion years it could happen!
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Posted 6/27/07
well in a billion years the big bang might happen again but there isnt much of a chance of that happening (some scientists believe that the big bang is a continuous cycle) and then the chance that there is enough nitrogen in the air is quite slim and the chance that the sun may blow up which mean that the odds of the planet gaining an atmosphere is very slim.

I WANNA SEE OTHER LIFE FORMS NOW!!!!!! sorry when a little overboard
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37 / F / Fort Meade, MD
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Posted 6/27/07
even if they are just little squishy things?
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Posted 6/27/07
Is it possible that the ice on Europa could be composed of water, ammonia, and methane much like Neptune and Uranus? Europa does not have the same slow gravitational contraction, which heats up the nucleus of both Jupiter and Saturn, and would lack the amount of heat these planets naturally generate due to this (only 1 short step away from a thermonuclear reaction that make stars really).
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37 / F / Fort Meade, MD
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Posted 6/27/07
^^ what do you mean gravitational contraction?
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42 / M / US
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Posted 6/27/07
Jupiter has an extremely high gravitational pull (as you stated in your previous post) this causes a very slow gravitational collapse of the planet. If it were just a bit more (in the cases of Saturn and Jupiter) it is possible that a thermonuclear reaction could occur and ignite the gases of those planet to form stars. This takes tremendous energy, which Saturn and Jupiter already create (creating more energy then they actually get from the sun). The heat would have to reach about 15 mil kelvin (give or take a few mil maybe). If the planets were a bit more massive, the gravitational contraction could possibly be great enough to cause a thermonuclear reaction.

I may be mistaken about this, I read a lot, but my info could very well be off. It's been years since I actually did any research or even leisure reading on this subject.

Edit:
Deleted redundancies

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37 / F / Fort Meade, MD
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Posted 6/27/07
^When I get home from work, i'll check into that.

Edit:
to below - Yeah not a prob...Will do!
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