/sci/ - Science & Math

[Anonymous No.16066632]

Where are all the Aliens !?

[Anonymous No.16066678]

>>16066632
More data is required in order to reduce the unknowns in the Drake Equation (DE), so it is premature (or at least it isn't science) to speculate about where the aliens are. We have already made progress on a few of the variables since the DE was written down: likelihood of terrestrial planets, procaryotic life, eucaryotic life. I would like to see samples collected from the ocean moons in the outer solar system, and the Oort Cloud, to find out if such objects are sterile or contain (frozen) microbes. Either result would be huge. Also, a bigger telescope than Webb could survey the sky for star-sized infrared objects (candidate Dyson spheres).

[Anonymous No.16066723]

>>16066632
i think the frermi paradox underestimates how rare alien life is
>planet
>outside of a specific star type
>at a certain habitable distance
>with plenty of avaliable carbon and / or oxygen and minerals and no nasty chemicals (like a flourine atmosphere)
>with a warm ocean for life to develop in (lots of water from somewhere)
>with all the building blocks of life
>that must then evolve into bacteria
>that then must have the supposedly super rare event of gaining mitochondria
this kickstarts evolution
from there
>life must evolve into complex multicellular organisms (this took 2 billion years btw)
>that then must travel to land (this part took another billion years btw)
>that then must miraculously develop hands from paws and hoofs
>then develop language
>that then must develop large brains
>that then must take thousands of years of scientific advancements
>that doesnt die to nuclear war, famine,
>to then form a peacefull and scientific community
>to go to space
>THEN
>travel across the universe, if there is no ftl travel this is very slow
even if aliens checked up on earth every 50,000 years, they could see multicellular animals 10,000 times but could miss humans entirely if we destroyed ourselves withtin the next 30,000 years
imagine if there was no Europe, or humans had 30 less iq points, or we never left africa, or we went extinct as there were only 160 humans at one point, none of it would matter

[Anonymous No.16066727]

>>16066723
this also assumes that aliens aren't genocidal maniacs too
it also assumes that any animal with arms would develop toolmaking
there are 500 other monkey species that never went anywhere but eat banana and swing from tree

[Anonymous No.16066729]

>>16066723
Meaningless when all P are undefined. They have zero clue how life began and all P we can point to are effectively impossible. This implies current chemical and biological theories are bunk.
We live in a star wars universe btw. All life arises concurrently, ± k generation of each life form.

[Anonymous No.16066732]

>>16066729
can you explain what P and ± k means?
or atleast something that is googleable

[Anonymous No.16066734]

we obviously don't have enough data yet, but there is reason to presume that our moon is unusual, as it's very large for the size of our planet due to it being a result of collision and not a captured object. the extreme tidal forces created by the moon appear to have been pivotal selective pressures in the history of life on earth. if our understanding of the age of the universe is true as well as our understanding of how long it took for intelligent life on earth to develop, there are perfectly good reasons to believe that we might be the first intelligent life to develop in our galaxy.

[Anonymous No.16066748]

Abiogenesis is the most ridiculous of all the crackpottery to come out of the Darwinian cult. Life cannot ever come from non-life. Life was created here on earth, obviously. Did the Creator also make life elsewhere? Maybe, who knows, but I doubt He’d do that and not mention it to us, given all the other things He’s taught us or warned us about.

[Anonymous No.16066758]

>>16066732
Probability
k is related to mean time to offspring for a given life form. In this context, this would be the most advanced lifeforms on a given planet. It doesn't really matter, each common ancestor jumped through similar filters and each progeny face the same great filter.

[Anonymous No.16066782]

>>16066748
>Life cannot ever come from non-life
>muh arbitrarily set line
everything obeys laws of this universe. you can at most talk about complexity. don't give a fuck about what YOU decided life is or isn't, you fucking imbeciles. reality does not give a single flying fuck about what you consider or not life is or isn't, you utter morons

[Anonymous No.16066862]

>>16066727
>swing from tree
Their hands are specialized for locomotion, while human hands are specialized for tool use. Something a bit unusual happened in human evolution to get from one specialization to the other. See https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1571064/