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NASA study finds life-sparking energy source and molecule at Enceladus

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Re: NASA study finds life-sparking energy source and molecule at Enceladus

#161

I really, really, really hope we will discover life on another planet, preferably in another solar system. Right now we have a sample size of one so a lot of thinking about the origin is speculation. I hope this will change.

Your Amazon Prime membership includes a variety of space shipping benefits, including several space shipping options if you need to expedite your discovery.

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#162

Earlier quoted context omitted.

What made the demiurge?

If we're just having fun here, then I'd say it doesn't have a creator. Which is not a concept humans are capable of understanding. It could be the demiurge is eternal, forever and always. The concept of time may have been an invention by such a creator.

Sure, but time isn’t necessary for a causal chain. Even if from the perspective of the demigurge it has always existed, in some causal (or anti-causal depending on the laws outside our reality) way it must have spontaneously come in to being (Or, if the demiurge was created from another being, eventually the chain of causation comes back to some being spontaneously coming into existence). You can’t avoid the “something came from nothing” reality, even if what came into being first came into being in a way that from a human perspective seems timeless.

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#163

The fact that there is something, just something can drive me crazy. Why is there something and not just nothing.

There is this super cool phenomenon where pairs of matter and antimatter will spontaneously come into existence in a vacuum and then neutralize itself. I always liked to intuitively connect that with an equation that looks really complicated, but just comes out to 0 = 0 when you simplify it. Add to that cellular automata that based on extremely simple rules can show mindblowing outcomes. I feel these things together give an intuitive feeling about a possible origin of this something we are looking at. I think Steven Wolfram voiced similar thoughts. Of course one might go further and ask why laws of physics exist at all...

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#164

Earlier quoted context omitted.

I always like to daydream about the various solutions to the Fermi Paradox. If we're not early, if life isn't rare, and there are intelligent species [1], what might most of it look like? I don't think most of them would match the techno signatures we're familiar with. Factories, gas emissions, etc. are an industrial age thing. What if they're really smart? What does that look like? What kind of signals might we dete…

"I also imagine they've found a way to escape the limitations of intelligence and death, perhaps by becoming computers of some kind." I am 100% convinced that this is in our future, not even very far out. Why put up with our flawed bodies if we don't have to? First we will probably replace parts of the body with something better until eventually the whole body has been replaced.

I think it's most likely we won't get "upgraded", but rather cloned into computers. I think the essence of ourselves, the original, will stay within the vessel of our body - and doomed to the flaws therein. But, our personalities will be able to be carefully cloned (likely using a ton of questions fed to AI, or otherwise) in essentially infinite AND limitless computers.

It's a scary thought, to be sure. That, no matter how close a computerized copy of me is to me; I'm still stuck in this body, in this own brain, and its inevitabilities.

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#165

This is intriguing and I’m very happy this exploration is being done. But, for decades, I’ve been reading reports of the discovery of evidence for the trappings of life elsewhere: water and organics and “habitable” exoplanets. These are valuable discoveries, but the tone of the reports suggest they imply life is about to turn up. It’s worth remembering that there is not one single shred of evidence that life has ever…

I would turn your logic around and say, everywhere we are able to look, we find evidence that life is more likely than expected. Until the 1990's it was an open question whether any other star had planets; as soon as we got the tools to test that, we found they were ubiquitous. As soon as we got the right instruments to Mars, we found signs of moving water, methane sources, and complex organic molecules in what is ba…

"we find evidence that life is more likely than expected"

But only after we really lowered our expectations in the first place. I have an old book, about the Viking Mars lander, describing the technical details, before the rover succesfully landed on mars. It is full of optimism and a strong expectation, that it will find evidence of at least bacteria.

And before we had strong telescopes and rockets, there was a strong expectation, that Mars has developed life.

We know, that bacteria can survive in stasis mode on asteroids - yet we have not found life on any other planet.

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#166

Earlier quoted context omitted.

I would turn your logic around and say, everywhere we are able to look, we find evidence that life is more likely than expected. Until the 1990's it was an open question whether any other star had planets; as soon as we got the tools to test that, we found they were ubiquitous. As soon as we got the right instruments to Mars, we found signs of moving water, methane sources, and complex organic molecules in what is ba…

"we find evidence that life is more likely than expected" But only after we really lowered our expectations in the first place. I have an old book, about the Viking Mars lander, describing the technical details, before the rover succesfully landed on mars. It is full of optimism and a strong expectation, that it will find evidence of at least bacteria. And before we had strong telescopes and rockets, there was a stro…

Those original expectations weren’t based on evidence though.

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#167

Earlier quoted context omitted.

I would turn your logic around and say, everywhere we are able to look, we find evidence that life is more likely than expected. Until the 1990's it was an open question whether any other star had planets; as soon as we got the tools to test that, we found they were ubiquitous. As soon as we got the right instruments to Mars, we found signs of moving water, methane sources, and complex organic molecules in what is ba…

“England has developed a hypothesis of the physics of the origins of life, that he calls "dissipation-driven adaptation."[3][5] The hypothesis holds that random groups of molecules can self-organize to more efficiently absorb and dissipate heat from the environment. His hypothesis states that such self-organizing systems are an inherent part of the physical world.[7]” If Jeremy England’s hypothesis is true, then life…

>> better turn low entropy into high entropy.

I took a double take and thought you'd made a typo, because I've never heard that assessment before.

I see what you're saying about dissipating heat and work... but life organizes. Most of that wasted heat from any organism is the result of its processing, consolidating and transmitting information. Which is probably the only counter-entropic (extropic) process we can observe in the universe. My view has always been that life fights against entropy.

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#168
post #75

Earlier quoted context omitted.

Great comment! Indeed there is a recent Nature paper that's causing a lot of discussion that is investigating that missing link between the physics of matter and the emergence of the natural selection and evolution processes that give rise to life. this is a really fascinating area! https://www.nature.com/articles/s41586-023-06600-9

That link (going from basic chemical to bootstrapped evolution) is an entire field of research. Not one paper now and then. Labs, money, researchers building on each other's work... Just want to point out.

Any good (starter) books on this?

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#169

This is intriguing and I’m very happy this exploration is being done. But, for decades, I’ve been reading reports of the discovery of evidence for the trappings of life elsewhere: water and organics and “habitable” exoplanets. These are valuable discoveries, but the tone of the reports suggest they imply life is about to turn up. It’s worth remembering that there is not one single shred of evidence that life has ever…

The math is the evidence. The math is not in your naysaying favor.

I can't even conceive what evidence maths could provide!

Re: NASA study finds life-sparking energy source and molecule at Enceladus

#170

This is intriguing and I’m very happy this exploration is being done. But, for decades, I’ve been reading reports of the discovery of evidence for the trappings of life elsewhere: water and organics and “habitable” exoplanets. These are valuable discoveries, but the tone of the reports suggest they imply life is about to turn up. It’s worth remembering that there is not one single shred of evidence that life has ever…

What you are touching upon, imo, is the idea that science is NOT actually some independent, objective means of understanding the world, in contrast to religious thinking. Whereas the reality is that science is actually a belief based system, that cloaks itself in a (thin) veneer of objectivity. The scientific method is venerated but not applied personally.

So, the reality is that adherents accept a reality intermediated for them by priests/scientists (and journals, trusted sources). Adherents talk about truth/reality while having little or no personal experience of the matter at hand. It is group behaviour, evidence is paid lip service to but there is very little critical thought or assessment of said 'evidence' by any individual adherents. When the scientific authorities make a pronouncement, this is simply accepted.

Religion. Believers.

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