If Mt. Everest is 8848 m (5.5 miles) high and the deepest part of the ocean is the Challenger Deep at 11 km (7 miles) then Europa's ocean at 100 km (62 miles) is reeeeeal deep indeed for sure!
That's like climbing Mt. Everest 11 times!! Gives me a whole new meaning to the word "Titanic" I tell ya. But what's really is what lurks at those depths?? Probably some huge god almighty beast or something!
Scary indeed for sure!!
Europa
I was expecting, “That’s what she said…”.
Oh, well.
That critter looks like the buggers I used to find on the beach in the wet sand. Dig ’em up, they’d bite/pinch you, jump off, and burrow back down into the sand.
Europa is definitely an interesting place and worth investigating. It would be nice to see a poll of how many people expect life to be there. I am in the "I don't think so camp".
Earth has lots of intelligent life, and much of it is on the surface of the planet.
I think if a planet or a moon has intelligent life, it will be easily visible on the surface of the planet or moon.
Also, on Earth, you need plants and animals for intelligent life.
Plants have to receive light from a sun (or star), so if a planet or moon doesn't have plants on its surface, there will be no intelligent life on that planet or moon.
Is that deep enough for you? 
this was interesting. 100km deep ocean anywhere = scary as SH*T. how could there not be life? I don’t know…
These?
I do not see any pictures here. :-(
Well, unless that deeeeeep white area to scroll down is what it is about. :-D
So deep it put that a$$ to sleep…. Deep?
Don’t forget Jeff, an extraterrestrial who lives in the subway. And do remember the Arrakis sandworms.
Are you saying out of all that vastness, we are the only ones?
Fermi allegedly said suddenly, “But where is everybody?”
This is the generation that grew up on Star Trek and Star Wars sci-fi. No doubt, science fiction has deeply affected the beliefs of society on this subject. By comparison, the people of 100 years ago would have considered the idea of life on other planets utterly absurd.
Obviously, as science advances and new discoveries are made, we learn more about the universe. But science hasn’t uncovered sufficient evidence of life on other planets. So the broad-based belief that life exists elsewhere is virtually entirely attributable to science fiction… and the operative word there is “fiction.”
I’m not saying whether there is or is not life on other planets. I don’t know. None of us can know. No reason not to look for some, of course. I’m just observing the root cause of the popular mindset, fwiw.
Personally, in the past month I’ve watched all of the episodes of The Mandalorian and also Picard. Enjoyed them both… other than being somewhat disgusted at the ‘deus ex machina’ (or should I say ‘machina ex machina’?) theatrical device that brought Picard back to life as a golem. Better if the old coot had stayed dead IMO. 
Hmmm… is there any intelligent life in Hollywood? I wonder….
ALL THESE WORLDS
ARE YOURS EXCEPT
EUROPA
ATTEMPT NO
LANDING THERE
USE THEM TOGETHER
USE THEM IN PEACE
So far, that is what humans on Earth have observed. 
If you want to believe in something for which you have absolutely no evidence, that's your right to, but I'm not gonna do it.
You’ll finde aliens in H.G. Wells’ War of the Worlds (1898). And IIRC, Jules Verne mentiones people on the moon some decades earlier.
There’s thus far nothing that supports or contradicts the theory of life ex earth, and it will probably take a lot of time to have a closer look at the Venus atmosphere.
It boils down to the chance for ‘growing’ those long molecules that became the precursor of DNA. Everything has to be in place I presume, and then there might be the requirement of one or more events that supported this process. We have no idea currently.
I’m, again, with you here. But the thread turned out interesting nontheless.
For years, science thought that the canals on Mars had no natural causes.
You must have heard of the phrase: life as we know it.
That would mean: carbon based, so depending on oxygen and water.
But is our planet the only that makes something like you and me possible?
What if another form of life is based on silicon, or maybe even pure energy?
Why have tribes all over the world more or less the same saga and tales?
Of chariots riding the sky.
In contradiction of what I mentioned before, that would indicate life as we know it.
So walking on two extremities, with a few onther extremities to carry things.
With stereoscopic sight, and hearing.
Like you said, there are more than one kind of belief for things that are not (yet) proven.
That’s why it is called believing.
We road horses and buggies not so long ago. What we are able to observe and understand is probably an indication of our own limited abilities. Rocket travel will become the new horse and buggy.
Rocket travel when the scale of things is in light years wont get you too far. Actually, an automobile can travel longer distances on earth when you compare things relatively.