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Occams razor - they're simply too far away even for advanced travel.
* Meeting or surpassing the Speed of Light is impossible (which doesn't make interstellar exploration/colonization impossible, just slower)
* Intelligent Life is rare (we're the only ones in ~3B years of Life, or at least the only ones to prosper)
* FTL Communications are impossible, also.
It's entirely plausible that some subspecies of dinosaurs became advanced enough to create things such as screws before dying out. After a few hundred million years, there would not be a lot left from our own culture either. Organics rot, metals rust.
Given stable enough conditions, it will evolve toward intelligence.
I agree with you in suspecting abundant life, but I'm not so sure that intelligence is at all common.
Next is to observe exoplanets and measure things like oxygen, which could betray a presence of life.
This is a quite interesting topic to think and BS about.
It’s sort of like the Fermi paradox, but with more physics.
More amazing are these huge "methane oceans" hundreds of miles wide at the bottom of the Gulf of Mexico. The dense methane forms a clearly visible basin which splashes as eel species dart in and out of it. The basin is bordered by huge colonies of mussels who use the methane. The mussels allow for starfish and other simple life to thrive there.
It's interesting to think none of these forms of life were thought to exist 30 years ago. I remember reading about them when discovered, but seeing all this in depth with deep water cameras is astonishing.
We can define civilization as accumulation, storage, and transmission of information - this is what we have been doing in past. At some point perhaps humans will not be needed for that, if we build intelligent machines. At that point (besides us losing any reason for existence), perhaps flight of a few hundred years to next stars becomes OK as the machines will not be subjected to aging. May be what we see as UFO's is something of that type - automated probes from closest stars.
OK, this idea is kind of far out (pun intended) but might it be possible to transmit self-replicating information without physical machines as space probes?
Maybe just the right pattern of cosmic rays or other electromagnetic or gravitational wave has the potential to land somewhere and cause a reaction capable of starting life, or maybe creating something capable of gathering yet more information from subsequent transmissions, building on itself.
I think FTL is impossible however, or we'd have been visited by a least probes or some other object(s). Perhaps on a regular basis like several per year, unless many Fermi Filters are in place to make life very rare and very far apart.
I think FTL is impossible however, or we'd have been visited by a least probes or some other object(s). Perhaps on a regular basis like several per year,
At least we are getting close to FTL communications, once that happens a lot of other techs will rapidly advance.
RC2006 saysAt least we are getting close to FTL communications, once that happens a lot of other techs will rapidly advance.
FTL communications will not happen, until you believe in communication backward in time.
https://phys.org/news/2017-08-bell-prize-scientists-spooky-quantum.html
* FTL Communications are impossible, also.
OK, this idea is kind of far out (pun intended) but might it be possible to transmit self-replicating information without physical machines as space probes?
Do intelligent civilizations wipe themselves out before achieving Intersolar Spaceflight?
Is Intelligent life rare?
Are the civilizations "Hiding"?
Are the civilizations using something other than radio transmissions?
What do you think?
#Science #FermiParadox