Placo
Life and Death
- Feb 14, 2024
- 725
As the title suggests, do you believe in the existence of extraterrestrial civilizations?
An interesting hypothesis is that of ancient aliens, which would explain the origin of religions for example, but at the moment it is considered pseudoscience.Yes. I don't know if they've ever visited us, whether there have ever been genuine UFO sightings, or if they even know of us or can visit us. However I think it would be rather egotistical to believe that out of the entire universe, we are the only inhabited planet, and that humans are the only intelligent lifeform out there.
Exactly! That's my thinking too. Like, c'mon the math even estimates there are like idk thousands of possible places out there just in our galaxy (something like that don't quote me).There are 100s of billions of galaxies, each with 10s of billions of stars, which each could have multiple planets.
There's no way that this little rock we are on is the only one where life happened
Could be, but the processes that led to life on earth look common.I'm not sure, though I feel like the evolution of complex multicellular life forms is likely rare (though I don't know for sure).
Aliens (speculatively, of course) are hypothesized to have a broader range than life forms on earth do – at least from viruses to whales in size, and individuals and societies at least as complex as humans and our civilization.Yes, however, I don't really think about it much. Probably it is a very different form of life and I do not believe we ever contacted aliens or that they ever contacted us. In this sense, it doesn't affect me in any way if they exist or not.
Everything we smell, see, hear, taste, or touch is just decorations as far as we know.No, all the galaxies are just decorations as far as we know. Statistical chances are not proof they exist.
I suspect that the speed of light is a limiting factor for biological visitors, but I would be surprised if life never crosses interstellar space.I am skeptical of FTL travel, and pretty sure that if it can be done, the shortcut through space can itself only propagate at the speed of light.It may not be practical to traverse the cosmos using general relativity in the standard model. You can use time dilation, you can hope for wormholes, you can imagine generation ships. But it may require a distinct theory of physics. Or, the universe may be slowly traversable. If we were just a little more advanced than we are now, but with the same physics (just applied on a larger scale), we could cross to the nearest stars in a few tens of thousands of years. That would be quite doable for machines, or for spacecraft carrying sperm and eggs and artificial wombs, and potentially for humans in suspended animation. Or, if we solve aging, what's a few tens of thousands of years in a very long life?(master replacing mitochondria, and then reverse engineering what our original embryonic stem cells were and replicating them to replace defective cells in our bodies. That would set the foundation for editing our own genomes as well as for immortality).A very important question is: what do you consider aliens?
I think we can all agree that there are most likely simple organisms in the universe.
It would be very strange if there were no organisms in such a vast space.
"Intelligent" animals (we are animals too) are a different topic.
At this point we cannot rule out various options.
Space is gigantic and we still don't know the answers to some questions.
Maybe we are the most advanced civilization? We cannot rule it out completely.
Maybe there are many civilizations like us, but we will never meet each other because we are too far apart.
Maybe there are civilizations that can destroy us in a split second and from our perspective they are Gods, but they are just very advanced.
We can multiply and multiply theories.
Let us remember that even if by some miracle we can travel at the speed of light, it still does not guarantee us a comfortable galactic journey.
The distances are simply too great.
So if there is a civilization that can travel very fast, it means that there may be technologies that for us humans at this point are something like magic.
Overall, I believe that there are most likely other animals in the universe.
It's a pity that I probably won't find out the answers to many interesting questions.
Theoretically, a civilization can get electronics before they get a steam engine.I feel like there must be life out there somewhere. Just how developed it is would depend on how their planets developed I guess. It's weird to think about though. Are there other beings out there also wondering if we exist? Would we get on if we met?
We do not know if the local (observable) universe is truly infinite. Infinity exists as a mathematical concept. We do not know if it exists as a physical reality.Considering how the universe is infinite, I believe that there must be life somewhere other than earth. However, I don't think that they would look like how they're depicted in movies
As far as we know, in this universe they will still be stuck with the same toolkit.There are other life forms out there, chemistry and physics is the the same everywhere in the observable universe. Even if there's only 1 civilization (or any kind of simple life forms) per galaxy then the universe can be considered to be full of life.