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/sci/ - Science & Math


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15738100 No.15738100 [Reply] [Original]

https://www.nasa.gov/goddard/2023/webb-discovers-methane-carbon-dioxide-in-atmosphere-of-k2-18b
Exoplanet K2-18b may potentially have alien life, more studies needed.

>> No.15738108

exciting news

>> No.15738116

Trappist results when?

>> No.15738123 [DELETED] 
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15738123

>.gov
>muh alieinnnnzzzzz!!!
>muh hollywood plot device is totally real!!!!
low iq

>> No.15738157

This is interesting but the planet is basically a mini-Neptune. If there's life it's going to be bacteria and other microorganisms at best.

>> No.15738159

>>15738157
If there's life there is shows that life can emerge in very exotic places.
Yeah this isn't Pandora but it opens many possibilities regardless.

>> No.15738215

>>15738159
Yeah bacteria life is cool and all but alien spaceships and cities is what everyone really wants to find

>> No.15738225

>>15738215
Is a low tech civilization (humanity during Rome's age for example) any different from non-intelligent life in terms of biosignatures? I don't think they had any kind of pollution or other effect that wasn't possible by other means.

>> No.15738234

>>15738100
SPOILER ALERT:
it's not alien life

>> No.15738236

>>15738234
what is it

>> No.15738258

>>15738225
A Neptune-like planet likely doesn't have a significant exposed land surface on which animal life can develop let alone an intelligent tool-using civilization

>> No.15738263

>>15738258
Do we have any actual idea on if and how advanced tech could be developed underwater?

>> No.15738265

>>15738236
not not not alien life
the gases are gonna be from plain ol' combustion of hydrocrabs

>> No.15738269

>>15738265
there is potential dimethyl sulfide, it looks promising

>> No.15738276

>>15738263
>horrific advanced underwater lifeforms use their highly developed mental powers to enslave the land animals and force them to build spaceships
outside of science fiction the answer is probably "no"

>> No.15738279

>>15738269
submerged volcanic vents?

>> No.15738283

>>15738236
Not that anon, but both methane and CO2 can be produced by abiotic processes. See also, Venus and Titan.
Dimethyl sulfide is a bit more exotic, but it still can be produced abiotically.

>> No.15738302

>hydrogen atmosphere meaning little if any atmospheric oxygen
there's nothing to see here folks. there could be simple anaerobic microbes but no interstellar civilizations flying around in tic tacs.

>> No.15738306

>>15738302
any life is good

>> No.15738312

>>15738306
Nooooo muh heckin wholesome Star Trek fantasies!!!

>> No.15738315 [DELETED] 

>NASA
its fake
>20 posts
>6 IPs

>> No.15738318

>>15738315
>space is fake
go back
>>>/x/

>> No.15738319

>>15738315
NASA means it's real

>> No.15738362

>>15738123
>Where is the January bull
bless /pol/'s heart

>> No.15738468

>>15738306
>any life is good
this poor engineer dude would probably disagree
https://www.youtube.com/watch?v=sbEdDiLatFA

>> No.15738477

>>15738116
They already released those and confirmed there is no life

>> No.15738479

>>15738315
Just ignore the science bro, it isn't real bro.

>> No.15738480

>life within 124 light-years
This would mean it is ridiculously common.

>> No.15738486

>>15738480
I like to think that there are regions of the universe where life is common, maybe we are just in a region where life is really rare.

>> No.15738487

>>15738477
That was just for the innermost planet which was expected to have no atmosphere. They've been awfully quiet about the other planets that are closer to the habitable zone.

>> No.15738494

>>15738480
>sample size of 2
>one of which is only assumed to have life

>VAGGYj

>> No.15738499 [DELETED] 

>30 posts
>9 IPs

>> No.15738516

>>15738499
>I don't understand how conversation works
Ok

>> No.15738532

>get your ass to Europa
All this exoplanet searching of star systems we can never visit is bullshit. They should spend the money on exploring Europa and Enceladus where we know the conditions for life exist.

>> No.15738534

>>15738100
ayylmaoooo

>> No.15738541

>>15738499
>DON'T START CONVERSATIONS
>JUST POST ON THREAD AND THEN GET EXCITED FOR NEXT THREAD

>> No.15739118

So all the oxygen on this planet reacted with hydrogen and became water leaving only hydrogen in the atmosphere. That means there's no molecular oxygen dissolved in the water so no lifeforms are possible except maybe some bacterial sludge. Hope we get some good science fiction about what kind of life could evolve on a planet like this.

>> No.15739180

>>15738100
4H2 --> 8H+ + 8e-
8H+ + 8e- + CO2 --> CH4 + 2H2O
no life needed
now here is my nobel price

>> No.15739950
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15739950

Even if we confirm there is life, we still can't get there or send any signals to see if there is intelligent life. It would take 120 years for any signal we sent out.

If there is intelligent life they should be able to see us as easy as we can see them. Maybe they already know about us and they are planning there attack?

>> No.15740469

>>15739950
>Send out signals
Nobody is claiming there's intelligent life flying spaceships around the planet.
Even if it is life, at the absolute most it'll just be plankton growing in water. There's not enough oxygen to indicate complex life.

>> No.15740602

>>15739950
kind of difficult to build a telescope on a water planet

>> No.15740743

>>15738283
ethanol is common throughout the universe too.
https://en.wikipedia.org/wiki/Sagittarius_B2

>> No.15740821

Very surprising that Event Horizon and JMG don't have a video on this exoplanet yet

>> No.15740824

>>15740821
I wonder if Cool Worlds will comment on it

>> No.15740837 [DELETED] 
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15740837

Here we go the trolls are out in full force again.

Claiming blurry images on telescopes can determine whether there’s life out there in space.

GET A JOB!!!!

>> No.15740840

>>15740837
>>>/x/
>>>/lgbt/

>> No.15740974

>>15740837
Nice b8 m8

>> No.15741068
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15741068

>>15738477
These were for b and c which were already way too close to support any life. e and f are the most likely candidates to support an atmosphere, water and life

>> No.15741107

>>15740837
Just because it's blurry ain't mean it not life worthy, as they say

>> No.15741258

Dimethyl sulfide presence on a likely ocean world, where dimethyl sulfide is only produced by life on earth (almost entirely plankton no less).

I'd say this is an extremely strong signal for possible life.

>> No.15741267

>>15741258
the ocean is probably in a super critical state overlain by very dense atmosphere of hydrogen.
not saying life is impossible just adding some context in regards to how Earth-like this planet is.

>> No.15741603

>>15738100
It's going to turn out to be nothing. Nothing interesting ever happens with space exploration no matter how hard they try to hype mundane findings up.

>> No.15741615

>>15741603
This. It's just another NASA grift to raise my taxes.

>> No.15742584

>>15741603
>where muh ayys
midwits can't appreciate planetary science

>> No.15742595 [DELETED] 
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15742595

>> No.15742628

>>15738487
It was for the innermost TWO planets, b and c. The third planet d is a Mars-sized thingie with more insolation than Earth gets, and that insolation will be tilted infrared - so, especially given flares, and the likelihood it's tidally locked like the first two, it's probably airless too.

That leaves e and f. Sadly it takes longer for outer planets to get around to transiting, so it may be some years before we get results from them. (They might have spin-orbit resonance which isn't 1-1 like the inner ones; they might have atmo.) We'll probably get d results first but d sucks.

>> No.15742645

>>15738279
My thought as well. Venus had phosphene (sp?) traces but these can come out of vents, and Venus has lots of those.
Unsure about something as complicated as DMS tho'.

>> No.15742646

>>15742595
This guy never learns. He is falling for guvprop again.

>> No.15742815

>>15738100
>may potentially have alien life
And how does that relate to aliens, schizo? Aliens don't exist. Take your meds and go back to >>>/x/

>> No.15742821
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15742821

>>15742815
>how do aliens relate to aliens?

>> No.15742827
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15742827

>>15742821
>article about the atmospheric composition of a extrasolar planet means aliums

>> No.15742828
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15742828

>>15742827
>biological chemicals have nothing to do with biology

>> No.15742830

>>15742815
they mention extra-terrestrial life on the NASA link

>> No.15742854 [DELETED] 

>.gov
its fake

>> No.15742880
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15742880

>>15742828
>any chemical found in living organisms on Earth also found on other planets means aliums

>> No.15742887

>>15742830
They should stop entertaining the 4channel schizos then. Aliens don't exist. But it's one way to secure funding from gullible dupes I guess.

>> No.15742901
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15742901

>>15742880
>a chemical only known to be produced by life isn't evidence of life, because it just isn't, okay?

>> No.15742905

>>15738100
So what is the partial pressure at the surface of these different gases that JWST detected? Just detecting them isn't enough unless we know how much of each gas actually there. Would also be nice to know the total atmospheric pressure and temperature at the surface so that we can determine if humans could actually visit there some day.

>> No.15742982

>>15742901
It's very interesting. I wonder what new abiotic pathway will be discovered to explain this

>> No.15743000

>k2-18b actually has several moons we can't see because JWST too weak, not enough resolution etc
>each moon and the planet itself has a different chemical composition but no life
>the fucked up combined spectrum coming from the moons and planet falsely indicate biosignatures when there are in fact none
wouldn't this be ironic?
>t. cool worlds dude was right

>> No.15743075

>>15743000
Valid point but can planets orbiting red dwarfs even have moons? The hill sphere must be small, and Earth's Moon is an outlier in the solar system.

>> No.15743081

>>15743075
Haven't done the math but with the planet having eight times Earth's mass and orbiting a smaller star it should be able to retain something in orbit. You could also have a double planet. Wonder if JWST could detect something like that?

>> No.15743871
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15743871

>>15738100
>methane co2
Basic bitch molecules just like water. You have to out of your way to procgen anything else.

>> No.15743896

>>15738236
swamp gas

>> No.15743929

>>15743871
finding methane on a non-gas giant/non-ice giant planet in the habitable zone is a potential biosignature

>> No.15743946

>>15743871
>>15743929
It's the dimethyl sulfide they're talking about. On Earth it's only made by octopus farts

>> No.15743948
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15743948

>>15738116
Tabbys star fucking when

>> No.15743960

>>15738116
They checked the innermost planet and it sucks. The rest probably suck too so everyone lost interest and pointed the telescope elsewhere.

>> No.15744072

>>15743946
>co2 without co
>methane in the habitable zone
>dimethyl sulfide
There's actually three biosignatures. If the carbon dioxide came from volcanic activity there should also be carbon monoxide like on Venus and Mars but none was detected which tilts toward life as the source of the co2. It looks like they hit the jackpot with this planet.

>> No.15744113

>>15738159
Good job begging the question and reaching faulty conclusions.

>>15738225
Non sequitur and ad hominem.

>>15738283
Actually false. Please review introductory atmospheric chemistry, and please do work on your deductive logic skills.

>>15738312
Nice ad hominem and strawman.

>>15738318
Nice ad hominem.

>>15738319
Nice strawman.

>>15739180
Unbalanced.

>>15743000
Way to twist the facts. Ad hominem. Red herring. Appeal to authority.

>>15744072
Those aren't biosignatures, so you've successfully wasted bandwidth on this board and the time of everyone who read this post. While your post, on average, may only take 9-17 seconds to read, with several thousand people reading your post, you've wasted much more time collectively than you could've possibly contributed to the Field of Science. Way to go. Put your thinking cap on before posting on this board, please.

>> No.15745321

>>15744113
Is this guy pro- or anti-alien?
I don't get it

>> No.15745393

>>15743948
please stop looking at us
>t. tabby's star ayys

>> No.15745400
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15745400

>>15744113
>whines about muh ad hominems
>ad homs everyone else
>seethes about perceived phallusies
>refuses to offer any arguments of his own
>adds zero value to the discussion

>> No.15745440
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15745440

>>15744113
>adhoms
>appeal to authority
>appeal to anti authority schizos
>argument ad absurdum
>strawmechas
Welcome to fucking /sci/ bitch!

>> No.15745449

>>15745440
this is why I stay on /sfg/

>> No.15745457

>>15738100
if you spend even 1 second thinking about this then paige hill will go out of here way to tell you thar your a horrible loser with no life

>> No.15745614

Just the confirmation that a planet orbiting close to a red dwarf can retain its atmosphere has huge implications for the existence of alien life

>> No.15745619

>>15745614
What "confirmation?" What "implications?" You've provided zero evidence to back this up. Way to jump to conclusions and waste everybody's time. Use your head before making another post here.

>> No.15745663

>>15745619
>What "implications?"
That a planet orbiting close to a red dwarf can retain its atmosphere

>> No.15745667
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15745667

>> No.15745678

>>15745619
(NTA)
>What "confirmation?"
the study they did confirmed CO2 and Methane in that exoplanet
>What "implications?
it was argued it was impossible for planets around red dwarfs to have any atmosphere, this discovery opens many possibilities now

>> No.15745679

>>15745667
great
go post this on /x/, very relevant there

>> No.15745712

>>15745663
>>15745678
This planet is giant. Did anyone doubt giant planets can retain atmosphere?

>> No.15745728

>>15745712
Sub Neptune is not giant.

>> No.15745733

>>15745728
Speak for yourself

>> No.15745736

>>15745712
8 Earth masses still qualifies it as a Super Earth. The important thing is astronomers can now begin to establish criteria under which red dwarf planets can retain their atmospheres. Hope they find a way to observe the Gliese 581 planets next.

>> No.15745756

>>15738100
Is it even possible to confirm if there is actually life there or just some exotic chemical reactions?

>> No.15745759

Wolf 359 when?
>t. Locutus

>> No.15745776

>>15745756
it's difficult to confirm anything.
there are conflicting results about methane in mars's atmosphere and it's right next door and we've sent probes there.
a planet 150 lightyears away is a hole different story.

>> No.15745784

>>15738100
>nasa.gov
its fake

gotta make up them big spectacular lies to get them big bux government gibes

>> No.15745791

>>15738100
So what's the story on the gas giant that orbits inward from K2-18b? Hope JWST measured its spectra as well. This gas giant is very close the star and might be boiling off chemicals that could be interacting with K2-18b somehow.

>> No.15745971

>>15738100
>flare star
>hycean world
mutually exclusive

>> No.15745975

>>15745971
New observations indicated that flare stars only flare away from their equator. Planets are safe.

>> No.15746011

>>15738276
That is outrageously wrong. Life forms can effectively enslave other life forms. Life forms can use other life forms as tools to obtain resources, even ants can do it. Life forms can become self aware and grow the desire to colonize the unknown.

>> No.15746081

If we ever did discover alien life, there would be porn drawn of them before the end of the first day.

>> No.15747169

>>15746081
What diplomacy issues would real alien porn cause?

>> No.15747463
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15747463

>>15744113
>Unbalanced

>> No.15747470
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15747470

>>15742901
>A molecule... means aliens :O
>We only know it to be produced by Terran life so it can only be produced by Terran life

>> No.15747730
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15747730

>>15747470
>exotic chemicals that can't be produced by geochemistry just randomly pop into existence, conveniently on a planet in the habitable zone
>it definitely couldn't be alien microbes though, that's just silly

>> No.15747814
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15747814

>>15747730
>We understand every possible chemical process in the entire universe
>All chemistry research stops forever
>We know everything
>Because of this it must be Aliens(tm)

>> No.15747825
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15747825

>>15747814
>any and all evidence of potential life must be ignored, because there's no other life in the universe (source: it was revealed to me in a dream)

>> No.15747841
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15747841

>>15747825
>There's only one way a chemical can be made
>Since we know every geological process in the entire universe it can't possibly be geological
>Must be Aliens(tm)
>I know this because I saw it on the History Channel
>It was revealed to me on channel 38

>> No.15748263

imagine the smell

>> No.15748270

>>15745756
they even believe there is dark mater rofl

>> No.15749630

>>15747463
>>15747470
>>15747730
>>15747814
>>15747825
>>15747841
when a wall argues with another wall

>> No.15750257

we need to send a probe with a camera to k2-18b immediately no matter what the cost is!

>> No.15750592

>>15738234
so it's humans?

>> No.15750594

>>15750592
no
it's cat girls

>> No.15751200

>>15738100
>Bros LK-99 is a superconductor
>Dudes K2-18b has Martians
Does /polsci/ get tired of being wrong

>> No.15751717

>>15738100
So how do they even know the size of this planet? Depending on the orbital alignment only part of the planet might be transiting the star. That would throw off the light curves they use to calculate the planet's diameter. The planet could actually be a lot larger which would make it a hot-Jupiter type planet which has been seen before around other stars.

>> No.15751733

>>15751200
They don't

>> No.15751758

new Event Horizon video on K2-18b just dropped. I don't even know what to believe now.
>multiple news articles say water vapor was detected in the planet's atmosphere
>the primary researcher dude says there was no water vapor detected

>> No.15752367

>>15751758
>Event Horizon video on K2-18b
Source

>> No.15752626

>>15751758
The lead researcher emphasized that they didn't have major water vapor in the atmosphere, but that was not inconsistent with a temperate ocean world. On earth for example there is water vapor in the atmosphere but in very low amounts that you'd never detect from 100 ly away. There were some Hubble results that looked like major amounts of water vapor, but with the new James Webb data it turns out to be methane. This all looks fine, if you had water vapor as a major atmospheric component you'd be looking at some fucked super-greenhouse planet.
>>15752367
https://www.youtube.com/watch?v=E39PBEPpahE
Pretty good interview with the main researcher on this latest paper.

>> No.15752736

>event horizon
Never heard of them
Are they chudsafe?

>> No.15752751

>>15752736
It's Jon Michael Godier's interview show. He gets pretty interesting guests.

>> No.15752835

>>15752626
>Pretty good interview with the main researcher on this latest paper.
It was funny when JMG turned the discussion to technosignatures and possible ayys

>> No.15752850

>>15752835
I thought Dr Pajeet evaded that one pretty deftly

>> No.15752942

>>15751758
>no water vapor detected
This is a good thing. It means the water remains in liquid form, rather than driven into the atmosphere by a powerful hydrogen greenhouse effect.

>> No.15752957

So what's the bottom line on this planet? When our distant descendants finally reach it can they sail its ocean in boats wearing only a face mask to provide breathable air? I for one want to sail around this planet and take an occasional whiff of the hydrogen atmosphere.

>> No.15753500

>>15752957
Your great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great great grand child will be able to do that, not you.

>> No.15753501
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15753501

>OMG CO2 & METHANE ON A DIFFERENT PLANET!!!
>THIS IS THE GREATEST NEWS EVAR!!!!!
>what, theres CO2 & methane on Earth?
>how dare you!!!

>> No.15753526

>>15744113
> >>15738225
>Non sequitur and ad hominem.
Explain the ad hominem here. Are you unironically calling it an ad hom because anon suggested the Roman empire was low tech lol

never post again

>> No.15754243

>>15753500
Very disappointed. This is the only planet we've found so far where a human could go down to the surface without a pressure suit and actually speak. Their voice would sound funny though because of the hydrogen atmosphere.

>> No.15754267

>>15754243
The pressure in Titan's surface is fine, the issue is the extreme cold

>> No.15754353

>>15754267
Surfing on liquid methane in a spacesuit would suck. K2-18b wins hands down. My only major concern is the fucked up shit that likely lives in the ocean. Probably some kind of giant alien squid or megalodon. Wouldn't be any whales or dolphins or seals since there's no land for those to evolve from.

>> No.15754407

>>15753526
Way to tack on another ad hominem and a non sequitur to boot. Into the back thinkers pile you go.

>> No.15754704

Trappist bros ... we are forgotten

>> No.15754798

>>15754243
>Their voice would sound funny though because of the hydrogen atmosphere.
Not so. The Donald Duck effect is because your lungs are full of helium and the air is full of air. It's the transition that does it. If you're speaking in a uniform atmosphere you'd sound normal. In reality you'd have a suit full of breathable air with a voice transmitter membrane like in a gasmask. This would also sound normal.

>> No.15755029

>>15752957
Gravity is relatively ok. Planet is 7 times mass earth approx, but 2.5 times radius. It cancels out mostly so you're looking at 1.2g plus/minus 0.2

>> No.15755156

>>15755029
>1.2g plus/minus 0.2
That's like the water planet they landed on in Interstellar. Too bad the K2-18b ocean is so deep that you won't get any cool tidal waves. Probably better for colonization though.
https://www.youtube.com/watch?v=6u7f1ODt-eE

>> No.15755197

Did they already look at Proxima b or is it too small?

>> No.15755211

>>15755197
It doesn't transit the star so they don't even know where it is.

>> No.15755213

why are red dwarf exoplanets so boring and tidally locked and gay? fuck those lil niggas we need sun-like stars

>> No.15755248

>>15755213
they have most stable environments for the longest times, so I'd say they are pretty interesting in terms of searching for life

>> No.15755835

>>15755213
Those are easiest to look at because the smaller star/planet ratio gives you a stronger transit signal

>> No.15756030

>>15755197
We will probably have to wait for the ELT for that

>> No.15756035

>>15755213
easier to look for planets due to small star/planet size difference and short orbital periods

>> No.15756080

>>15738215
>Yeah bacteria life is cool and all but
it would be the greatest scientific discovery of all time.

>> No.15756706

>>15756080
I'd argue there are many other things better only because of their usefulness

>> No.15757183

>>15756706
Usefulness is the focus of engineering and technology. Purpose of science is the pursuit of knowledge. Curiosity is its own motivation.

Besides when we discover how different alien biology can be, how it is built and how it works I'm pretty sure someone will invent some shit based on this.

>> No.15757191

>>15757183
We can't do that unless we discover fast and cheap interstellar travel, which is one of the things that I think is better.
And if I limit myself to knowledge, I still think discovering the origin of the universe, to high certainty and detail, or something beyond the universe would be more impactful.

>> No.15757219

>>15757191
>fast interstellar travel
>cheap interstellar travel
Neither of these exist. Neither of these will ever exist.

>> No.15757246

>>15757219
"cheap" is relative
"fast" is somewhat harder to do, even if we somehow could send a probe traveling close to the speed of light K2-18 is still 124 ly away, so a project like this will have to be multi-generational, like cathedrals in the past

>> No.15757606

>>15738486
That is an awesome thought. I feel depressed when I think about it.

It is the biggest question we have. But other civilisations dont have that question to answer be because they are all close to eachother. How would life be when we know for example that there is life on mars.

>> No.15757719

>>15757606
Life is not special. It's just a very rare way in which matter can self-assemble.

>muh it's so special compared to rocks

Not really. Just a higher energy barrier to reach it.

>> No.15757723

>>15757719
You're a classic example of a spiteful mutant.

>> No.15757788

>>15740821
Event horizon has an hour long video about it from 2 days ago though…

>> No.15757808

>>15745756
Probably not. Short of getting a signal from intelligent life that we can translate we will probably not be able to 100% prove if other solar systems have life for a long long time. Right now is such a rough time where we can see exciting spectra that give us a hunch that life might be there but without knowing for sure we are just blueballing ourselves about the question of life elsewhere.

>> No.15757811

>>15747169
Would having sex with intelligent aliums be considered a crime like bestiality?

>> No.15757824

>>15757788
sorry I thought that post went out today and not last wednesday

>> No.15757924

I really want to visit K2-18b. Might have to give astral projection a try. If I can visualize the surface of the planet maybe I can project my consciousness there.

>> No.15757945

>>15757723
>t. self assembled matter

>> No.15758127

>>15757723
why would you say something like that

>> No.15758314

Hope they find one of these Hycean planets orbiting Proxima Centauri or Barnard's Star so we can send a probe in a reasonable amount of time

>> No.15758320
File: 241 KB, 1500x1500, Breakthrough-Starshot[1].jpg [View same] [iqdb] [saucenao] [google]
15758320

>>15758314
>so we can send a probe in a reasonable amount of time
I want to believe

>> No.15758701

>>15757811
crime is a matter of law only, so it's whatever we decide

>> No.15759252

>>15758314
Proxima already got some interesting exoplanets going on. I really hope we at least get giant space telescopes in our lifetimes for finding and studying exoplanets on all near stars

>> No.15759435

>>15759252
Wolf 359 when? Only 8 light years away.
>t. Locutus

>> No.15759440

>>15757811
Yes, but under galactic law we're the beasts.