26 thoughts on “How Early Could Life Have Appeared In The Universe?”
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100 millions years ABB for life seems to be contrary to the evidence. The first stars contained hydrogen, helium and a trace of lithium. No life from that. Early stars, would have had low metal content, to astronomers metal is anything heavier the helium. More than billions years ABB at least seems a much more probable earliest time for life. Its still a long time ago but much more realistic. There has to be enough carbon and oxygen.
The pure ignorance of the scientific mainstream community still makes me speechless. Why is it so hard to accept, that there were thousands of well documented and credible UAP sightings all over the world in the last decades? And still some scientist yak "where is everybody". Just imagine that they are already here, but do not want to interact with those violent apes running around the surface?
I grabbed a calculator and did some conservative numbers to see if these estimates of millions or billions of civilizations (or life at all) hold any water…
For starters I multiplied the 'higher end' of the estimated stellar population in the Milky Way by 5 (planets on average per star… assuming some stars are devoid and other systems are bountiful. )
I didn't bother with assumptions for planets free floating amidst the stars on their own.
So starting out with 2 trillion possible planets, I assumed most would be gas giants, ice worlds and super heated worlds too close to their stars… So considering all the exoplanets that are clearly not habitable by our standards, I figured one tenth of one percent would be good candidates within the habitable zones of their respective stars… and fairly earth like water rich worlds.
Now… if you eliminate Red dwarve stars (due to their flaring activity and tendency to have close in habitable zones which tidally locks any worlds within)… and account for earlier sun like stars that have already swelled into red giants, or cast off those layers into planetary nebulae… this reduces the number of candidates by a factor of 10 (eliminating red dwarves) and say by half of main sequence sun like stars (that have already left the sequence and swelled or cast off their layers.)
Finally… it took most of the 4.3 billion years to bring us here.
Arguably… you could say life came about within the first billion years (as simple microbes from abiogenesis of various protiens that got their own start from an amino acid rich soup)… it may well be this form of life is the most abundant kind at any given time in our universe.
Obviously it would be more interesting to discover an animal and plant rich world… Thinking of the Cambrian explosion… that brings us to when the earth was approximately 3.7-3.8 billion years old.
If you want 'intelligent life'… here that arose 'arguably' 250,000 years ago (approximate time our lineage has existed as Homo Sapiens… and Cromagnon man before.)
To calculate our fleeting existence as a percentage of the planet's age… divide 250,000 years by 4,300,000,000 years… then multiply this number by what you have left from the other reductions you've made.
To be fair… Homo Erectus man could be considered 'intelligent life' as this is our early forebearer… counting Homo Erectus… you could extend our timeline to about 800,000 years. Divide 800,000 years by 4.3 billion.
Assuming an average intelligent species exists for 10 million years… you could divide 10 million into 5.5 billion… whereby the earth like planet would start to lose it's life nurturing capability… due to the solar intensity increasing by about 25%, and the worlds magnetic field falling into decline… allowing for the atmosphere to first thicken, due to increased water vapour uptake, of a hotter world… as a runaway greenhouse effect unfolds and the solar wind starts stripping away high altitude volatiles…
Life will gradually cease due to the eventual autoclave like environment, followed by a gradual stripping of the atmosphere (and by extension… all surface water.)
The range in possible values for life as we know it in any of these scenarios… dramatically fall short of the 'millions and billions' of life rich worlds, as proposed to exist in our galaxy… and dramatically shrinks the number of possible occurrences of intelligent life to spring up.
This doesn't even suggest how many of these possible intelligent species would have likely advanced to our level (or exceeded us technologically) let alone become space faring creatures.
To succeed as a multi solar species… you have to be able to cross lightyears between stars… without succumbing to radiation or having your spacecraft hull eroded by micro-meteors, dust and even the sparse molecular gas out there… and within the creatures lifetime… unless multigenerational space arks are the way to go here. Light speed (or warp drives) may very well remain the stuff of sci-fi… which would dramatically limit the capability of any advanced civilization to become multi-solar.
I've calculated as little as 2 life rich worlds (with intelligent life) in our galaxy. We are certainly one of them… but the question is… is the other less advanced… more advanced (or even at our level) or did they go extinct (disease, nuclear war, other…)
If we are the only (or one of 2, or at least less than a dozen… or even one of a few hundred) intelligent species with radio technology etc in this galaxy… that would explain the great silence out there. Galaxies are too far away, and if warp drive and multi-solar colonization is prohibitively difficult or near impossible… that's also why we haven't encountered or witnessed any super advanced alien species yet… and may never.
You said that life like ours could've arisen between 100 and 500 million years after the Big Bang, because that was when the chemicals were present, but were these chemicals present in significant quantities for life back then? The quantity of heavier elements arose slowly over millions/billions of years.
We have no idea because a) the Webb telescope has shown star/galaxy formation happened much sooner than our models predicted, and b) we have no model for abiogenesis, so even if a suitable environment developed we have no clue how quickly life could emerge because we have no idea how life emerged.
I'm struck by the assumption that other more technologically advanced civiisations must exist, or have existed, and that the lack of detectable radio signals is reason to question the existence of any such life. It could simply be that, within the Milky Way, there is 1000s or even 10s of 1000s of light years between Earth and our nearest intelligent neighbor, and that our respective technological advancement is only within some negligible space of time (100s or 1000s of years). If true, there simply wouldn't have been enough time for signals to travel far enough to reach the other. The same of any light that might be analyzed that would reveal the tale-tell markers of life and/or industry. When looking beyond the Milky Way, any such light/signals would have to be millions or even billions of years old and still strong enough (radio) and not red-shifted enough (light) to obliterate or obfuscate any signs of intelligence.
I am hopeful that the mystery will one day be solved. Though I would love for that discovery to happen in my lifetime, I highly doubt it will be.
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RNA only? Like viruses then.
hello @historyoftheuniverse I think you might want to read the book: the immortality key ;D
100 millions years ABB for life seems to be contrary to the evidence. The first stars contained hydrogen, helium and a trace of lithium. No life from that. Early stars, would have had low metal content, to astronomers metal is anything heavier the helium. More than billions years ABB at least seems a much more probable earliest time for life. Its still a long time ago but much more realistic. There has to be enough carbon and oxygen.
I think this video ignores any and all known encounters with humanoid life forms and acts like it must not exist and so is total BS
Why your video is so long
The pure ignorance of the scientific mainstream community still makes me speechless. Why is it so hard to accept, that there were thousands of well documented and credible UAP sightings all over the world in the last decades? And still some scientist yak "where is everybody". Just imagine that they are already here, but do not want to interact with those violent apes running around the surface?
In the Beginning, no quality timepieces existed. God spontaniously ejaculated, and created the online porn industry.
You don't have enough data to come even close to attempting to answer this question.
About 6188 years ago, give or take.
I grabbed a calculator and did some conservative numbers to see if these estimates of millions or billions of civilizations (or life at all) hold any water…
For starters I multiplied the 'higher end' of the estimated stellar population in the Milky Way by 5 (planets on average per star… assuming some stars are devoid and other systems are bountiful. )
I didn't bother with assumptions for planets free floating amidst the stars on their own.
So starting out with 2 trillion possible planets, I assumed most would be gas giants, ice worlds and super heated worlds too close to their stars… So considering all the exoplanets that are clearly not habitable by our standards, I figured one tenth of one percent would be good candidates within the habitable zones of their respective stars… and fairly earth like water rich worlds.
Now… if you eliminate Red dwarve stars (due to their flaring activity and tendency to have close in habitable zones which tidally locks any worlds within)… and account for earlier sun like stars that have already swelled into red giants, or cast off those layers into planetary nebulae… this reduces the number of candidates by a factor of 10 (eliminating red dwarves) and say by half of main sequence sun like stars (that have already left the sequence and swelled or cast off their layers.)
Finally… it took most of the 4.3 billion years to bring us here.
Arguably… you could say life came about within the first billion years (as simple microbes from abiogenesis of various protiens that got their own start from an amino acid rich soup)… it may well be this form of life is the most abundant kind at any given time in our universe.
Obviously it would be more interesting to discover an animal and plant rich world… Thinking of the Cambrian explosion… that brings us to when the earth was approximately 3.7-3.8 billion years old.
If you want 'intelligent life'… here that arose 'arguably' 250,000 years ago (approximate time our lineage has existed as Homo Sapiens… and Cromagnon man before.)
To calculate our fleeting existence as a percentage of the planet's age… divide 250,000 years by 4,300,000,000 years… then multiply this number by what you have left from the other reductions you've made.
To be fair… Homo Erectus man could be considered 'intelligent life' as this is our early forebearer… counting Homo Erectus… you could extend our timeline to about 800,000 years. Divide 800,000 years by 4.3 billion.
Assuming an average intelligent species exists for 10 million years… you could divide 10 million into 5.5 billion… whereby the earth like planet would start to lose it's life nurturing capability… due to the solar intensity increasing by about 25%, and the worlds magnetic field falling into decline… allowing for the atmosphere to first thicken, due to increased water vapour uptake, of a hotter world… as a runaway greenhouse effect unfolds and the solar wind starts stripping away high altitude volatiles…
Life will gradually cease due to the eventual autoclave like environment, followed by a gradual stripping of the atmosphere (and by extension… all surface water.)
The range in possible values for life as we know it in any of these scenarios… dramatically fall short of the 'millions and billions' of life rich worlds, as proposed to exist in our galaxy… and dramatically shrinks the number of possible occurrences of intelligent life to spring up.
This doesn't even suggest how many of these possible intelligent species would have likely advanced to our level (or exceeded us technologically) let alone become space faring creatures.
To succeed as a multi solar species… you have to be able to cross lightyears between stars… without succumbing to radiation or having your spacecraft hull eroded by micro-meteors, dust and even the sparse molecular gas out there… and within the creatures lifetime… unless multigenerational space arks are the way to go here. Light speed (or warp drives) may very well remain the stuff of sci-fi… which would dramatically limit the capability of any advanced civilization to become multi-solar.
I've calculated as little as 2 life rich worlds (with intelligent life) in our galaxy. We are certainly one of them… but the question is… is the other less advanced… more advanced (or even at our level) or did they go extinct (disease, nuclear war, other…)
If we are the only (or one of 2, or at least less than a dozen… or even one of a few hundred) intelligent species with radio technology etc in this galaxy… that would explain the great silence out there. Galaxies are too far away, and if warp drive and multi-solar colonization is prohibitively difficult or near impossible… that's also why we haven't encountered or witnessed any super advanced alien species yet… and may never.
Almost binned dis vid bkoz of nut job title art. Glad I didn't bkoz ye done good!!
You said that life like ours could've arisen between 100 and 500 million years after the Big Bang, because that was when the chemicals were present, but were these chemicals present in significant quantities for life back then? The quantity of heavier elements arose slowly over millions/billions of years.
This is the video I was watching when I realized youtube is just the latest acquisition of main stream media and shit ass commercials.
RIP Klaus Schmidt
I love the conversation about what it means to be alive and in the definition given a.i could be condisered as alive, as well as npcs in certain games
At the moment God made it. OK that was easy
Pillar man theme starts playing
The probability of intelligent life appearing on earth is 1
We have no idea because a) the Webb telescope has shown star/galaxy formation happened much sooner than our models predicted, and b) we have no model for abiogenesis, so even if a suitable environment developed we have no clue how quickly life could emerge because we have no idea how life emerged.
I'm struck by the assumption that other more technologically advanced civiisations must exist, or have existed, and that the lack of detectable radio signals is reason to question the existence of any such life. It could simply be that, within the Milky Way, there is 1000s or even 10s of 1000s of light years between Earth and our nearest intelligent neighbor, and that our respective technological advancement is only within some negligible space of time (100s or 1000s of years). If true, there simply wouldn't have been enough time for signals to travel far enough to reach the other. The same of any light that might be analyzed that would reveal the tale-tell markers of life and/or industry. When looking beyond the Milky Way, any such light/signals would have to be millions or even billions of years old and still strong enough (radio) and not red-shifted enough (light) to obliterate or obfuscate any signs of intelligence.
I am hopeful that the mystery will one day be solved. Though I would love for that discovery to happen in my lifetime, I highly doubt it will be.
Kinda difficult to ignore David Grush an co.
Thanks for making this sleeping ASMR video
This was awesome mate. Appreciate your work.
Whether a celestial body air bursts or impacts the earth is EXTREMELY dependent on the individual bodies composition…..
Great vid! 😊