drake eqn

Obviously theres other life out there among the ever expanding universe, Duh. Derp derp we are super spethal and are the only things to exist evar

Drake equation is fucking stupid/useless.

>>202431979
Problem with drake eqn is: we have only very vague guesses for the variables in it.

seeing as we developed optical data storage, fusion energy and certain new-age alloys all from discovered alien space ships which had crash landed on earth. i'd say its pretty logical to say they exist.

also you post a picture of a real alien with your post.. so yeah.. duh

There is probably life out there. The question is whether or not they are intelligent, or have intelligence similar to ours. We always like to imagine meeting aliens and only needing to overcome a language barrier to understand them, but that's a little ignorant. Our brains are the result of millions of years of evolution, and any other planet that has conditions different than ours would have yielded vastly different results. Life on other planets may not have evolved intelligence the same as our abstract reasoning; they may not need intelligence at all. Intelligence is not the end-all, be-all of life; it's just a series of steps we took as a species that made us unique and gave us an advantage.

Some crazy-ass life might be out there.

Based on three variables 1. The size of the universe, 2. The probability of a planet falling within the "comfort zone" that allows for life to perform its necessary functions (exchange of gases, diffusion of water out of the cell etc) that are necessary for all life found on earth, and 3. The time it took for evolution to produce the cephalic "head" that we are familiar with (the cranium that contains a large brain), I believe that life, if it exists at all, will undoubtably be far inferior to our idea of intelligent life. There is a theory that archaebacteria could exist on Venus, but this is highly unlikely. Any further thoughts?

ALIENS ARE PROBABLY MONKIES

Actually, we wouldnt be able to imagine aliens. Why would they possess ANY of the themes of Earthly life? Legs? Lungs? Look at how different deep sea creatures are from land creatures.

Extra-terrestrial life wouldnt even be recognized as life

>>202434004
If its alive (i.e. has systems to sustain itself) wouldn't it be recognized as life?

>>202434343

We dont even know if Viruses are technically life, and they developed HERE

>logic
>4chan

wat

>>202434343

My computer can sustain itself.

>>202434004
aliens are just 3ft tall gray humans with no hair and big eyes silly

If there is, it's probably not carbon-based life, but maybe nitrogen-based or something else, who knows. Anyways, we'll all die before knowing, and humans will cease to exist before iscovering it. In due time, all life anywhere will dissapear.

>>202434421
Viruses arent technically considered alive, they change the host cell and use it to replicate.

Alien life likely exists. Though it would be so different from earth life we might not even recognize it as life at first. Though it would be describable from non-life. I would give anything for the chance to study it.

If only 1 out of every million star has a planet, and if only 1 out of every million of those planets is in the habitable zone, and if only 1 out of every million of those planets has the necessary ingredients for life, there are still literally billions of possible planets in he universe where live could exist.

>>202434678

>>202434421
Virii can be life, if we change our definition. "Life" isn't some inherent property, it's subjective, and up to us to define.

universe is infinite, infinite possibilities.

>>202434928
yeah like rocks could be alive if we just said 'rocks are alive'

>>202435124
well thats as dumb as saying niggers are alive

>>202435124
Well, yes. But that would be stupid. However, changing the definition of life to include virii wouldn't be nearly as stupid as that. So way to miss the point.

There must be other life out there, people who think there isnt obviously dont know just how big the universe is. Like >>202433739 said, there are only certain planets that can support life, and we have not found another planet that can yet, but like I said, the universe is a big fuckin place.

The thing is, we'll probably never meet or even find out if there is other species in the universe. If the speed of light was obtainable, then it would still take longer than our life span to travel to other solar systems or galaxies that could support life, so its kind of a pointless argument.

>>202434893
You mean an infinite number

dont listen to the wonderkilling fags, they are trying to give the impression of intelligence by being boring and angry, the universe has no limits and it wouldnt be possible to measure them anyway, all of their "measurements" are subjective

>>202435451
No, there are not an infinite number of planets. What the fuck are you talking about?

As for the Milky Way, there should be few civilisations at humanity's level of technology, and at least one transcending it.

>>202435301
idk

rocks that contain iron can steal electrons from surrounding shit and are attracted to magnets

seems as lifelike as a virus

>>202435635
the universe is infinite, therefore the number of planets contained in it is also infinite.

>>202435778
Hardly the same thing. But eh, still.

Also, sort of related:

http://www.youtube.com/watch?v=VoLYqcorW58

>>202435970
1. universe isn't infinite
2. well that about covers everything, but planets take time to form, and so even near the edges of the universe, you have little matter, and no planets yet.

>>202436132
Yes, it is infinite.

>>202436245
STOP TROLLIN ME

Here's a heavy dose of LOGIC for all of you >UFO< lunatics out there.

---

The amount of energy that a spacecraft traveling at the speed of light (or more) would emit would be ENORMOUS. We would have been able to detect any objects traveling at such a velocity YEARS (centuries even) before said object reached Earth.

Basically we would have been able to see any U.F.O's centuries before they even arrived to our planet, because of the incalculable energy required for speed of light travel.


We haven't.

U.F.O's are hoaxes.

Get over it.

Alien life will probably share many traits with terrestrial life; we can tell this by things that both convergently evolve, and have evolved independently upon different environs upon the earth.

One example is eyes; they're "Easy" to evolve, do so within a short span, and have evolved upon separate branches of the evolutionary tree several time in the span of Earth's history. The same can be said of a skeletal structure, though "exo" or "endo" is a good question; maybe creatures with both, like the earth.

All life evolves, so given that it will have evolved, generally the same strategies would arise; parasitism, altruism, pack hunting, herding, etc. etc.

This as well as defenses and means of transportation; limbs are efficient compared to most other means so expect to see those.

Though carbon offers the best prospect for life's construction as we know it, it's -possible- that there's life with another foundation, such as silicon. Also, the "humanoid" shape would likely not be around, given its lack of independent or convergent evolution upon the earth over 4 billion years.

>>202436245


No. No it's not.

>>202436514
Which energy would that be, by the way? The energy that travels faster than the speed of light, perhaps?

HOLY FUCK

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go here

>>202436787
Yes, it is.

>>202436514
>we would be able to detect something going the speed of light before it got here
>going the speed of light or more

Well, first, no ship could ever go the speed of light, and definitely not more than it.

And, if something WERE going to speed of light... somehow, we would not be able to detect it before it arrived, since information cannot travel faster than the speed of light.

Learn your physics man.

>>202436012
>>202436012
pretty fukin cool

reminds me of spore


my thoughts:

life is hard to define
is a sperm considered life in everyday life? not usually (otherwise masturbation would be genocide)
eggs usually arent either
but the sperm and the egg together sometimes are

and certainly a developed fetus is alive
however both the egg and sperm are considered alive by some

well take this back a couple million billion gillion years and you have some elements that eventually somehow become the basic parts of life which develop into more advanced things (like a fertilized egg becoming a fetus)

so where is the line drawn?
are atoms alive?

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P.S. 4chan mods = fags.
19812.6220703125

This whole thread is like this.

>>202436789

I think what he's trying to say is that any energy signatures created by ufos traveling at the speed of light would be abundantly obvious for centuries - and we have never detected such an energy signature.

>>202436516

The likelihood of life, and intelligent/sentient life, and ET civilization, are all indeterminate, though the first is likely prolific given the presence of much water in the universe + the number of exoplanets we can estimate to orbit the stars in our milky way alone (discounting the other 200 billion galaxies with their own hundreds of millions to trillions of stars each), and how many of those would be terrestrial, and within the star system's "goldilox" zones enabling liquid water to exist on the planets surface.

This is of course predicated on the idea that Abiogenesis (life from non-life) is a simple enough phenomenon that there is a vast array of suitable conditions for it to arise

If this is not the case and the Earth happened to strike it lucky in that the environmental conditions to foster the in this case vastly improbable beginning of life just so happened only once upon its surface, unique in all the universe thanks to the extremely specific conditions under which life can begin, then we're looking at the Earth being not only the only civilized planet in the galaxy, perhaps the whole universe, but also the only one bearing life. I doubt it though.

>>202436514
Just because we suck ass at space travel doesnt mean the rest of the universe does

>Logical conversation on the possibility of extraterrestrial life
>Logical conversation
>Logic

i never believed it until i thought about it from a logical point of view

1. universe is infinite
2. there is a specific probability of evolving into life forms (1 in X)
3. in an infinite span, anything with a probability can happen infinite times (infinity / X = infinity)

thus, there's extraterrestrial life

1. Amino acids can survive in space, leading us to the possibility that the building blocks of basic life can move between planets under the correct conditions.

2. Gaia Hypothesis (in short): life modifies the environment to suit itself. This raises the probability that once life starts, it will continue.

3. There are billions of galaxies, many with billions of stars. That's a lot of potential places for life.

>>202437258


>since information cannot travel faster than the speed of light.

>Learn your physics man.

>>202437841
Sam?

>>202437577

Finally, if we're taking the Earth as our example of the incidence of sentience/civilization, then we've many examples of sentience (think: sensitivity and self-awareness; dolphins, hominids, etc.), but only one of civilization (us!), so it's likely there would be at least some sentience on a planet or other location with biodiversity comparable with the Earth, but since we've only one example of civilization, there's no telling how often it comes about, or how long it lasts, etc.

Which leads to the Fermi paradox!

If there's so many alien civilizations out there, where are they? Why haven't we seen them yet, and why haven't they contacted us?

>>202437856
And... yes, that's a completely accurate statement. Some processes propagate faster than c, but cannot carry information.
>>202437841
Again, universe floats your boat.

>>202437641

Unless extraterrestrials are able to bend the laws/properties of the universe at will - no alien race has visited Earth (for ~2 million years at least)

Let's assume for a moment that Earth is relatively young in comparison to some older planets, or that on another similar planet, certain extinction cycles didn't happen, etc. Say a species is, hmmm, several hundred million years old, that evolved sorta similar to human life (i.e. sapient, constructive, "intelligent' life). Say that they reached the point we are at now, hmm, even just 5000 years ago. How much more advance than we do you think that race might be? What if they got to the point we are 100,000's of years ago, or even millions? :O

>>202438205

There's lots of resolutions to this paradox, and naturally until we discover ET life we'll likely not find an answer to it. I find most promising simply the idea that civilizations are spread so distantly in time (we've only been around 10,000 years, which on the span of universal history isn't even a drop in the ocean of time!) that they hardly if ever find each other when they do arise. Even if we last a billion years we'd have only been around for 1/16th of the universes history (though admittedly a larger proportion of the time second-generation stars have been around, which can form star systems containing the element of iron and heavier elements; only created during supernovae and thus unavailable until the first generation of stars went boom. Life as we know it needs these heavier elements to form and evolve). So in the end it's likely if there are alien civilizations, unless they're fucking HUGE and have some mass means of communication that could reach us, and that we could understand, then we're not likely to run into any.

As for life, microbial to larger and even sentient; well, we'd have to actually look on other planets, since there's be little to no detectable signature of life even if we found a planet with suitable prospects, such as being terrestrial and in the goldilox zone of its star system.

>>202438357
Who's to say light speed is the pennical of space travel? If dark matter could be proven to be true instead of hypothetical, and we bend it behind a ship we could possibly reach speeds greater then light speed.

>>202439321
Nope. That... no. Really.

maybe well find a planed full of super teligent dolphin walking around

If god exists then there are Aliens because god is not born on this earth.

>>202438476
what makes you believe that we will be around for that long?

>>202439321

proving to be true is one thing
procuring and testing is a whole nother
using to power a space ship is.... another thing to the nth degree

>>202439321
Light speed is probably the fixed limit. But that doesn't mean that space is as 'flat' as we think, I think we can take shortcuts through space...same reasons why a faster ship could make the Kessel run in less than 12 parsecs.

>>202439321
you are grabbin for straws there my friend

>>202439269
>>202439269

Continuing on, even though nobody cares...


An interesting prospect is the Von Neumann probe, which is essentially a self-replicating (reproducing!) spacecraft. This would be a feasible technology within the bounds of currently known physics (or near enough, apparently), and would allow an ET civilization to scope out the galaxy in a fraction of the time of non-replicating vehicles, and not have to pioneer super-luminal travel or even travel that was any more than a small fraction of light speed.

So one potential way of searching for ET civilization is to simply look around for any objects in space that fit this description, though naturally any within our own solar system could lie dormant for periods beyond the span of our civilization, and then we'd likely never detect it.

Est. 150 billion galaxies.
Est. 100-400 billion stars per galaxy
Any number of planets per star.

Is there life on other planets? Almost definitely.
Will we ever encounter them? Almost definitely not.

You are all billions of years under evolved.

>>202440826

Depends how often life forms from non-life, so I'm in agreement with you, but we can't be certain until we know precisely how abiogenesis works.

tl;dr all arguments, but i see a bit of people saying that it takes time. What makes humans the first in the evolutionary chain?

This sucks. The thread was supposed to be about logically assessing the possibility of ET life, instead we get some idiot speculating on UFOs or some other pseudo-scientific bullshit...and people shooting them down.

>>202441045

With numbers that huge, over the massive amount of time the universe has existed, I don't think it matters much how unlikely the formation of life is, it must have happened, or will happen, somewhere else.

they still arent certain how life is created in the first place tho

not even just counting in the drank equation, think about simply how many planets are out there. how many variables are out there and how many possibilities come together. it's kind of stupid to think that we're alone. even travel near the speed of light is too slow to see the fun things :[

>>202439321
OP here
Why are we not talking about aliens? Shit.

Picture relevent

>>202441451

Humans as a species only took a tiny fraction of the sum of time life has been around on Earth to evolve. We're "number one" in nothing special bar our intellect and civilization. It's unlikely that other intelligences will look Humanoid, though it's a slight possibility, though from what I've read it'd be likely that an ET intelligence would have dexterous appendages like our hands, for manipulating objects in their world subtly (and hence being able to put that intellect to use, otherwise it goes to waste and is selected against by nature, since those who waste energy on making a smart brain without the capacity to use those smarts are just wasting energy).

Imagine life forms a billion times the size of earth floating in space

>>202441451

because we are the only form of life on this miserable rock with the potential to spread life throughout the galaxy. We might even be the only life form that ever existed with that chance... though we'll probably fuck it up before we become an extra-planatary species.

POSTIN ALIEMS!!!!!!!1

there is water on saturn's moons. Water = life = earth invasion

>>202441594

I agree, the only chance it's not happened more than once is if the Earth's a single unique instance; as in, life beginning is so vastly improbable as to only happen once in our universe and even THEN it was vastly improbable...

But that's not likely the case, so I'd say it's a very very high chance you're right.

>>20244204
Its........its scared

>>202442201

Rule 34 on Starship Troopers brain bug.

We have mapped out over 100, 000 different galaxies in the universe so far (the rest of the universe is most likely going to be dark energy / matter / background microwave radiation if it's indefinantly looped) so..come on. No life out there? Really?

LETS CHANGE THE SUBJECT

We have established that the possibility of life is probable. But lets talk about the possibility and if it were to happen the impact on your culture present and future.

>>202435040
We don't actually know if the universe in infinite yet, retard. Please research (or preferably) know what you're talking about before you post.

proof

>>202443004
Goku would totally kick Superman's ASS.

tl:dr:
It's a possibility.

The chances of life occuring are very slim, while the universe is vast enough for this to have happened several times already the nearest extra-terrestrial life is probably 1000s of light years away and the nearest extra-terrestrial life that evolved a sapient species that built a civilisation capable of space colonisation is probably millions of light years away.

God made the entire universe just for humans, DUH

>>202443004

Not much at all. Humans will be Humans. The only things it'd do would be to open up a whole new academic field, possibly some shift in culture just like any other cultural interaction (except maybe on a larger scale, who knows) and maybe something to xenophobically unite against (other than niggers of course). But on the whole, Humans will still act just like Humans.

like a fucking monkey