The Fermi Paradox: Galactic Disasters
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- เผยแพร่เมื่อ 28 ก.ย. 2024
- One possible solution to the Fermi Paradox, the big question of where all the aliens are, is that some ancient galactic disaster wiped out extraterrestrial civilizations, and we're among the first to arrive back on the spacefaring scene.
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Credits:
The Fermi Paradox: Galactic Disasters
Science & Futurism with Isaac Arthur
Episode 252; August 20, 2020
Written, Produced, and Narrated by Isaac Arthur
Editors:
Darius Said
Jerry Guern
Cover Art:
Jakub Grygier www.artstation...
Graphics:
Mihail Yordanov
Music Courtesy of Epidemic Sound epidemicsound.c...
"You can also weaponize a black hole, see our episode on "weaponizing black holes" because of course we have an episode on weaponizing black holes!"
"If brute force isn't working, you're just not using enough of it!"
We are human. We figure out how to weaponize EVERYTHING. Give us enough time and we'll figure out how to weaponize empty space.
@@singletona082 That's easy! Just expose typical biologicals to it... they'll eventually die. Pretty horribly, too! 😁
@@misanthropichumanist4782 Nah man that's kindergarden stuff taking advantage of empt yspace existing the same way you'd drownd someone because handy pool of water. I'm more thinking take that ame pool of water and putting it thorugh a pressure hose to cut people in half.
@@ElectromagNick blackhole weapons actually seem very elegant and
Scientist 1: "If the universe collapses because of this experiment you owe me $500,000.
Scientist 2: "Deal, but if it doesn't collapse you owe me $500,000.
Actually it was just a joke by Fermi. They knew Trinity was not going to end the world. And the concerns were not about some space-time thing, but the possibility of a self-sustaining N-N fusion reaction in the atmosphere.
There is a declassified report about this from the early 1945. It is called LA-602 or "Ignition of the atmosphere by nuclear bombs" and you can find it online. In the report Oppenheimer calculates that even a huge H-bomb probably wouldn't "ignite" nitrogen - and small fission bombs of the Manhattan project were absolutely not going to do so.
@@yastreb. Has anyone ever thanked you for explaining a joke? 😝
@@Ian_sothejokeworks It looks like 13 people have thanked me for getting the facts straight.
@@yastreb. Fair enough! 👍
@@yastreb. "probably"! they did not know for sure but they did it anyway. i mean even when the chance is 99,9% that earth will not be destroyed woukd you take the risk?
“Extinction is the rule. Survival is the exception.”
― Carl Sagan
my god you're thirsty
@Dom Bul for vodka? 😂😂😂
I guess since 99% of everything that ever lived on the planet Earth has gone extinct, I have to admit Carl is right.
@@freeamerican2708 Can't we say 99.999999%?
Extinction is the end result for everything...
This episode made me think of this odd idea: What would it take to destroy a black hole? Not 'destroy' as in leeching it dry over millions of years. I mean something more like 'dynamite in a watermelon' kind of destroy. What would happen if an extremely large object (think "Galactic Baseball Bat"), travelling at relativistic speeds, were to smash into a smaller black hole? Would the black hole simply absorb the matter that crossed its event horizon, while the remaining matter just flew past?
I guess, for me, many concepts about black holes make them seem like they are simply the ultimate object. Nothing is 'stronger', bigger, more dangerous, or impervious in comparison to them.
Commenting just in case someone knows the answer
Someone give this guy an answer! (I’m curious!)
I am not an expert, but I think the most appropriate answer would be:
We don't know.
As for your "Galactic Baseball Bat", chances are the black hole will just break the bat into two, and It will most likely also add mass to the black hole, thus making it bigger (which is the opposite of destroying). Another outcome could be, that the black hole is send on, let's call it, a "Homerun Trajectory" through space XD, provided the "Galactic Baseball Bat" doesn't break.
If a black hole can be destroyed on purpose, then I'm certain that brute force won't work. Black Holes are so much brute force on their own, that they quite literally break the known laws of physics. What could possibly top that? The only thing that comes into my mind, would be the cause of the big bang... whatever that might be, no one has figured that out either.
So, bottom line: We simply don't know.
I am a layman to other laymen, but I would think that slamming anything into a black hole would only cause a massive explosion. The event horizon is rather small, so 99% of the material would fly past it or would be destroyed in the explosion.
@@barkasz6066 Could be possible.
Though, it should be mentioned, that there is more then one theory about black holes and currently we have no way to verify which one is correct, its not like we could just fly to the next one to experiment.
So, it still stands: We don't know.
Got a drink and a snack ready to go.
Bruh fr lmao. Im warming up stew listening to this right now.
Check that ✔️✅
i think i need a bottle of whisky for this one
Making sandwiches 👁️👄👁️
Make sure you have a snack with a shelf life of 1 trillion years, just in case we survive this episode.
If a wave of energy was passing through the universe at the speed of light, vaporizing the atmospheres of any planets on it's way, we probably wouldn't know it was there before we got hit by it.
I don't understand how that would be relevant to the Fermi paradox though, you would still be seeing all these alien civilizations right up until the moment your own planet was roasted, meaning it wouldn't explain why you can't see them right now. And if this speed of light force has already roasted everything, we should have some evidence that it did. I mean we know things that happened super duper early on in the universe well before any stars or planets ever formed, something like a light speed force roasting planets we surely would be able to prove happened if it did.
Yeah but if we know the cause of those we can observe it before it will happen
@robo336 You can leave that "probably" out, at least if the wave started without some build-up time.
Those waves always have a build-up time tho. It can be anything between 3 seconds and 5 episodes depending on the animation budget, the protagonist's hairstyle, and whether it's Yamato or Dragonball. Animecologists classify that kind of wave as "weaponized exotic energy buildup" (WEEB) btw.
@@achtsekundenfurz7876
Your post is made of awesome!
2020: WRITE THAT DOWN, WRITE THAT DOWN!
Bro Thats cringe 2020 bad joke got old and unoriginal pls stop
Just another Authoritarian you are wrong. Bye
@@chunkydurango7841 ok you refuted me i accept my defeat
@@chunkydurango7841 also i swear loyality to you as my king
@@siluda9255 based flexible loyalty peasant
"Ah yes, Reapers..."
"We have dismissed those claims!"
"The immortal race of sentient starships, allegedly waiting in dark space... We have dismissed that claim"
Subnautica
The Halo rings firing.
Colluding with Russia
"Black Hole Sun"
I didn't know you were a Soundgarden fan😁
Won't you come, won't you come...
Black old Son! He won’t come, back to Spain, causing pain.
He also mentioned "Supermassive Black Hole," since he's a big Muse fan.
The Bacca That Chews great song
So maybe we are alone in the super unknown
The thought of gravitational wavefronts colliding and forming micro-blackholes - which then very violently undo themselves - is probably my favorite catastrophe i've heard of on SFIA so far! :D
Brilliant video as always! :)
The whole "matter/antimatter" dynamic makes me want to write a sci-fi parody of "Romeo and Juliet" where one of the star-crossed lovers is from an anti-matter universe.
Intergalactic romance to molecular bond or not
Hi Isaac, long-time fan here. I just wanted to say thank you for what you do, no one else does science and futurism like you do and I'd even go as far as to say you're a real asset to humanity. I also started reading science fiction like a madman after finding your channel and haven't stopped. Mostly reading books you or others have recommended (thanks in particular for Revelation Space, the Expanse, and Dune.) And I wanted to share a recommendation of my own I found just browsing books on amazon that I'd never heard of before. I found one called Children of Time by Adrian Tchaikovsky that deals with uplifting and I have to say I really love it and think it's right up your alley. I'd love to hear what you think, especially since youve directed me to so many great stories this is my attempt at returning the favor. Much love from Las Vegas, NV ✌
This is all meaningless conjecture.
We must focus on the real threat.
The Reapers.
There are no reapers you conspiracy theorist! Stop wasting the Council's time!
It was obviously the Halos.
Right now my favorite "Fermi Paradox" books are the Bobiverse series on Audible. 3 books with a long 4th in the audio booth right now. Amazing video! Thanks for the hard work.
Ooooooooaaarrtt ... good video beside how you pronounce “er”.
The first thing I thought hearing the opening was, "Ok so Mars and Venus might have been a colder and a warmer Earth, but they never recovered from some cosmic disaster. Maybe a supernova to close to Sol, thinking half as fart as Betelgeuse is from us."
Yup, gotta watch out for those half farts from Betelgeuse. It comes out sounding like... "day-o, day-ay-ay-oh." Scary stuff.
It would need to be much closer to Sol than that to have an effect.
I find his voice so relaxing.
I did too - until every ”r" started being pronounced as a "w" and felt like I was back teaching super smart second-graders again.
@@Pugetwitch poor guy has a lisp he can't control it
pugetwitch hey, pugetwitch, don’t be an ass. It’s clear that the guy has a sort of speech impediment, and he’s worked hard for years at overcoming it.
Chunky Durango How do you know?
@@Peter_Trevor he's talked about it before
I remember finding your channel a while a go, I remember when you used to say that there's CC available, although I never used them because of your speech (I honestly though it was just your accent) I used it to get more "involved" in the story telling. I think it's a great tool for half listening half imagining the scenarios that we are talking about. :)
Black hole sun
Won't you come
And wash away the rain
Black hole sun
Won't you come
Won't you come (won't you come)
Hides the face, lies the snake
In the sun, in my disgrace
Call my name through the cream and I hear you scream again
Nothing like an episode of SFIA before school
I like the solution paradox to the fermi paradox being that eventually we get so smart that we create something that is unintentionally brings our own down fall like imagine every civilization figures out the easiest way for faster that light travel and when implemented some unknown law of the universe brings out a massive wave of gravitational energy destroying the civilization.
isaac you just made my entire day with this video. thanks dad
Oh right. More disasters to think about in 2020. I will give it a go anyway!
Finally 7 am and I can sleep!
Crazy that they leaked the season finale script so far in advance
@@piedpiper1172 off, big off.
Jan. 01 2020... Hi there, My name is Pandora...Welcome to my first unboxing Video!
A galaxy-sterilizing calamity would be on-brand for 2020.
On that note of nicolle-dyson beams, I think that it could also be possible that two K3 civilizations murder each other with them in a war of mutual destruction. Such an event would kill two galaxies or more.
Well hell son, ya got a sub. Keep it coming
This video is just tempting 2020
Why people think 2020 bad joke ist still funny
Seriously this wasn't a joke to begin with. You guys are just complaining and trying to be funny about it
Funny how you still think the universe spins around the earth
Y'all took this way out of proportion, were y'all born with a stick in you bottom? Or are you just more dense than osmium?
Love your videos isaac
Thanks for the episode!
The plot of the 2018 novel, The Silent Stars, explores mass extinctions as a solution to the Fermi paradox. Not Galaxy-wide but ones such as a magnitar quake that could wipe out a star faring civilization. Galactic habitual zones, etc... Artificial intelligences called Angels are created to figuratively sit on the mountain tops and watch. If there is an extinction event, it's their job to restart humanity.
This is how I know it's thursday. New video.
Right there with ya bro?
To funny was thinking on the Fermi Paradox most of this week and most of it had to do with one disaster :) and what i was was thinking was that dark matter or energy could be the answer we are looking for to the paradox, it would explain why we cannot detect dark matter and how it makes up most of the Universe, maybe we lucked out and were in a very rear area without dark matter or energy and that's why we can develop :)
How do you make heavy elements higher in the periodic table than helium AND producing the shockwaves to trigger star formation? Supernovas. What would threaten multicellular life capable of locomotion living on the surface of a planet that would have the potential to build a technical civilization? A nearby supernova. Supernovae were more plentiful in the early days of a galaxy's life. So the very thing that makes life possible also takes it, and it doesn't violate non-exclusivity either. Giving our current understanding of star formation and cosmology, there are strong indicators that the frequency of early supernovae would make an excellent Fermi paradox solution.
This is also ranodmly makes me wonder about galactic asteroidal debris. In the early days this could have increased the Deep Impact filter across the Galaxy.
What I find interesting is the growing evidence for a nearby supernovae 2.6 million years ago (as identified by short lived radioisotopes linked to core collapse supernovae that suggest one had to have occurred around 150 light years away though this is largely based off sediments from the Earth and Apollo lunar samples). It had several indirect effects which may have actually have set our primate ancestors down our current trajectory as it seems to have triggered the onset of glaciation in the northern hemisphere drying the atmosphere while also increasing the frequency of fires and fire based ecology. The latter aspect matches models which suggest at that distance radiation can directly penetrate to the upper troposphere driving increased charge polarization within clouds i.e causing significantly more lightning in the near term. In effect this may actually be the event which sent our species down the path towards higher intelligence technological advancement and increased social complexity etc. so the increased hardship of life on Earth due to a nearby supernovae might actually have the effect of selecting for intelligence.
No one goes into as much depth in these topics as you do. There have been tons of times where I read sci-fi, and say "Oh, I remember this idea from the Elmer Fudd show". Then usually they barely scratch the surface of it without exploring it too deeply, and I'm left a little bit disappointed.
Ahhh, the hardest paradox - can a SFIA episode exist without a drink and a snack?
Simple. No. Drink and snacks are necessary.
Hey Isaac, just got done binging a whole load of your videos again, your commentary is always an inspiration.
I would much appreciate some thoughts on an idea I had while watching this.
One of the common themes in Fermi Paradox discussions is artificially occurring disasters. In the case of a False Vacuum Collapse, the results are catastrophic on a potentially universal scale. What are the odds that the universe may have developed some kind of safeguard against intelligent life due to its potential to destroy massive swaths of space? When I say "the universe", this could mean small, unthinking developments in space, all the way up to a "God" figure.
In the iconic cult soviet sci fi novels by Strugazky brothers the future Earth's space fleet was divided into four branches :
One of the most prolific and sought after as career path was "Trackers" (Sledopyty) - their mission profile is mix of scouting for new inhabitable planets and most importantly evidence of advanced civilizations .
You know, you could argue that the lack of disasters is just as disasterous for intelligent life as too many disasters. If a non-intelligentspecies or group of species became dominant on a planet it might stop the development of intelligent life (intelligent enough to create technology) and if that non-intelligent life isn't wiped out then that might be a strong barrier. Would humanity have ever emerged if the dinoasaurs were still the dominant lifeform on earth?
of course not. Its a fact that the reason humanity was allowed to come about was the extinction of the dinosaurs. Its not really a question... lol
Great channel to learn about the univors, the multivors and disastors!
I'm just pulling your leg here, it IS a great channel!
Thank isaac. I listen to you every night. Not many videos left 🙄
Lol same!
I really enjoy your videos. You talk about such interesting stuff. Thank you for sharing.
Regarding the disastrous use of futuristic tech, Star Trek always made me wonder. The warp drive is treated by Trek writers as a pretty mundane and safe device, as common as a steam turbine is in today's oceanic shipping, but it seems to me to be quite a bit dangerous. For starters, it's powered by antimatter, which is stored in magnetic bottles aboard the starships and then there is the fact that this thing actually warps the fabric of spacetime out to a certain distance around the spacecraft. Yet they operate these things in low orbit and close proximity to populated planets, and even engage in destructive battles close to large settlements. At least in one original series episode Kirk remarks that if an antimatter bottle were breached near an earth-like planet it would strip away the atmosphere and wipe out life on the surface, yet in many other episodes starships are seen to be completely destroyed in rather small explosions. Star Trek III: The Search for Spock depicts a starship self-destructing and entering the atmosphere, presumably to break up and crash on the surface, with no regard to the breaching of the antimatter containment devices, the main characters actually stand on the ground looking up at it as if they are watching Skylab fall or something, sadly bemoaning the loss of their ship rather than bracing for the imminent annihilation that should befall them.
my best guess is that the storage containers are made of some super tough alloy. strong enough intact that it can easily survive reentry and crashing into the surface intact. I mean these things are super dangerous so it makes sense they'd have safe guards.
Love your videos my friend keep it up. Gonna start making more of my own because of these.
To me the most likely answer to the Fermi paradox is that it isn’t a paradox at all. We’re it, there is no one else and when we’re gone that’s it. Game over.
Yes! Another Fermi paradox video!
Im sad after watchim this video. It remembers me once messing around and testing my brand new first black hole bomb. Accidentally fried a dyson and a few planets... Lucky that wasnt really well aimed. Sorry. XD
2 words almost everyone is thinking of
Mass Effect
Warhammer
Mass effect, warhammer and lovecraft are what came to my mind
This is..
It is an amazingly extraordinary fact that we are here and don't know for sure if there is anyone else out there.
It is most likely..
But we don't know.
It's truly mindboggling lol.
This truth is stranger than fiction.
It is amazing!
I appreciate it.
It's awesome.
Blackhole Mojo is a great track name. Love you Isaac
PBS Space Time stated recently that Sag A star WAS an Active Galactic Nucleus (AGN) only a couple of a million years ago, which would have blasted out enough power to fry anything within about half the galaxy, which may have sterilised a fair chunk of the middle section of it, or the sides it blasted out.
"in the context of einsteins E=MCsq its only about the energy release of 10 to the 27 kg of matter". Those numbers are bananas Isaac holy shit XD the fact that the word "only" was used in this sentence tells me im at SFIA
I've never played Mass Effect, but I'm still hoping for a reference to the Reapers.
Maybe I'm just weird and should content myself with 40k references. Despite never playing that, either.
You should! Mass Effect, at least. Never got to Warhammer either. 1-3, and you can ignore Andromeda if you want.
@@saltymcginger2027 I've heard a lot about the Mass Effects, and they're somewhere on my "to play" list. But I'm one of those guys who compulsively buys interesting games on Steam when there's a sale and has hundreds of unplayed games in his library, so...
@@timothymclean I fully understand. I do the same.
No direct reference, but the concept at least is covered near the end when he talks about the potential that a species may intentionally sterilize their galaxy, or neighboring ones. It's discussed in more depth in Sleeping Giants, as he mentions.
But the Reapers are basically the Inhibitors from Alistair Reynolds Revalation Space series xD ...played and read both.. both are awesome :D ...both endings are underwhelming a bit ...lol xD
Thank you Isaac for putting such cool and complicated concepts and ideas into such an entertaining and digestible form.
Most underrated channel on youtube. Wish you get past 1M subscribers soon 💐💐
You immediately remind me of Barry from BBT and I think I love it.
Hi Isaac; i very rarely send comments on youtube, however this particular video had me gripped! Probably about the 15th/17th one of yours ive watched.. but this one was excellent. Thanks :)
You make my busiest day so much better Isaac, thank you.
Is it normal to be totally fascinated with this paradox and terrified of the implications the the evidence lends itself to? I’m staring into the void, and the void stares back. It feels like nerdy self harm at times, yet I keep coming back for more.
7:30 The largest known stars are actually about 300 solar masses, not 50, though most top out around 150 outside certain extraordinary circumstances
That's not really possible, a star that massive couldn't even form.
@@anabang1251 en.wikipedia.org/wiki/List_of_most_massive_stars The largest star in the known universe has a mass of 315 solar masses. It is, as I mentioned originally, quite extraordinary though
That gives me so much ideas just imagine some beings with the knowledge how to make something that cleans the entire galaxy of life.
That's been covered in previous videos
Yeah but If they have that amount of tech they prob have no reason tô kill the entire universe
Noooooo the new ads have made it so I can't fall asleep listening to these clips, as the ads wake me up when drifting off :(
Remember the days when ads were just banners?
i remember when there were no ads anywhere. companies wanted to kill the internet because they didn't know how to make money on it.
Oh no!
so thats why Pho (bo) gives you so much energy! #lessonlearned :)
Unlike the grabbed my snack and watching Isaac Arthur people here i usually listen to your videos while I'm trying to sleep
keep up the good work Isaac,i slept a lot of times listening to your voice so you definitely have a place in my subconscious hahahah
Excellent video. I hope no asteroid destroys Earth and we are able to travel to other star systems.
If pure survival of species is the goal the solar system colonised would be enough to survive, however humans are expansionists - we will go to other stars
What if there were giant space whales bigger than our sun? It's not beyond the realms of possibility or is it? With a creature so big, how long would it take it to realise pain in its rear fin? I mean, if pain travels at about 200 miles per hour, a huge space whale wouldn't know it was hurt for a very long time. Does this mean therefore that there is a limit to how big creatures can grow?
i love this channel. i listen to it all the time. . whenever he talks about black holes, my inner juvenile comes out to play.
although, his pronunciation has gotten more smooth over time, which i assume is due to practice speaking, so i can't laugh at how he says "black hole" anymore.
What if it’s extremely common for civilizations to nuke themselves out of existence when they discover nuclear weapons? I mean, we where pretty close during the Cold War, and we are still not out of the safe zone, a nuclear war can still happen
Thanks Isaac, this one made me think of the halo ring effect from the game.
This pairs nicely with Joe Scott’s video about the effects of falling into a magnetar, like a good Malbec with a well-grilled steak.
The company is nicer here though
“The chicken is only an egg’s way for making another egg.”
― Richard Dawkins
the tech disaster was looked at stargate atlantis. the acients first foray into zero point energy=vacum energy, the generator turned out to be uncontrollable and wiped out 3 star systems. So it's possible just like here on earth when we tested some nukes and underestimated their yields tsar bomba bikini atol etc So its possible in the future we could wipe ourselves out trying to make a blackhole or a ftl device not fully understanding the power of it and dividing by 0. Same way we have a very liberal understanding of nuclear power, how we envisioned it used as a first-strike weapon, used n every medication, used in foot wear etc etc then we found out the truth that the shit is super dangerous now we look back at those times in horror. but a future event with power scales this ridiculous there maynot be anything to look back at
these have been covered by Isaac in other Fermi Paradox videos.
Don't play with that!
awwww your species is extinct.
Finished my drink and snack before watching so I can give my undivided attention.
2:37 this is quite cursed looking
"Oh man, 2020 couldn't get any worse!"
*Gamma-Ray Burst: Allow me to introduce myself*
At this point I'm not sure a nearby grb would be worse than what we have now...
@Draggy654 🤣
Don't tempt it
As always interesting, and well presented.
Might I make a request for a possible future episode?
A look at what circumstances make for a habitable planet, and for how long? Not so much the usual "it's got to be rocky, with water, in a suitable orbit around a suitable star" but the more nuanced stuff - a few examples on just one topic:
eg:
How "Earth-like" does a planet have to be when it comes to mass and makeup to get something like us? If Earth is pretty-well bob-on what does that say about timescale?
eg:
A quiet K-type star might be better than our sun for a long-lived biosphere but if Earth-size is a requirement it's estimated our core will solidify in about 500 million years, incidentally about how long we have before the sun 'cooks' us. Without the benefit of a magnetosphere a longer-lived star doesn't help much.
eg:
There is some evidence that the dynamo that generates our magnetosphere today has 'only' been about for 500 million years-ish!! There is plenty of evidence that suggests prior to that we always had a significant magnetosphere, presumably generated by some other process. Does that mean a liquid core is optional? Does that mean orbiting a longer-lived star may not be that pointless after-all?
Now let's see what Isaac has in store for us this time!
Much Respect Issac. Love you’re show! -E
all evolved from a single ancestor.
What if that ancestor was grey goo
That ancestor WAS grey goo
Umm, no subtitles?
Let me just say brilliant...I like everything he does not to sound to weird.....I'm a new listener and now a fan
so jealous of you. You have some very very good video watching to do.
Fermi bubbles here emitted by our own galaxy may indicate some powerful event in the Milky Ways past.... Gas clouds drifting towards Sagittarius A star may light up again what then will happen to life on earth?
Nice bobverse reference there with the ramming a sun from two opposite directions with RKV's.
The answer to the Fermi Paradox. There is a beautiful loving Universe many people claim they experience when they are undergoing an NDE. Long before any Advanced Civilization gains the technology necessary for Interstellar Travel - they find a way to escape to that Universe. In other words, it is technologically easier to get to that other very pleasant and safer place, than it is to develop the Type II Civilization Technology necessary for Interstellar Travel. This explains why we have found no sign of an Advanced Alien Civilization anywhere in the Universe.
24:45: That's a sucker bet. Even if you're right, how are you going to collect your winnings?
In the afterlife, if there is one.
@Der Richtige Arzt But if you bet that you _don't_ destroy the world, you get the satisfaction, the wager, _and_ don't die! Seems like a much better deal.
@ Isaac Arthur, how long ago would Galactic mergers and quasars of died down enough to allow planets to form that could sustain civilizations?
Thanks Isaac.
There is a recent discovery of a big boom in the Ophiuchus constellation with an estimated power of 30 000 000 times the mass-energy of the sun. The energy release was smeared over a couple million years, however.
A similar thing was found in the Milky Way with the Fermi Bubbles, but closer to 500 times the mass-energy of the sun. Still, the energy release was gradual here too.
Anyone getting video stutter?
It starts at around 12:10
Nope
Good for you Elmer found a new hobby now you dont have to worry about which season it is rabbit or duck 😉
Yeah!
Would we want we emigrate from our galaxy before Andromeda merges with it to avoid the possible merger of the 2 super massive black holes? As a precaution...?
2:21 Technically, everything past our local cluster (so mainly Andromeda & Milky Way) probably can't be colonized via sublight speeds due to expansion of the universe.
(A social scientist asks) Then in a multiverse, it would not be ruled out that 10 to 20 black holes could collide at once, or is this reductio ad absurdum?
Surely, any such galactic sterilization event would leave some hint of it nature, effects in the cosmology record?
Personally one of the most morbid proposals for the consequence of a experiment gone wrong was the detonation of the first nuclear weapon, they hypothesized it could've been so powerful that all of New Mexico would have been annihilated. The second option however was much worse, the spontaneous ignition of the entire atmosphere.
@14:46 Is that accretion disk being animated correctly? I thought that the bottom lobe of light from behind the black hole would flow (in this case) from left to right same as the top lobe. My reasoning is that gravitational lensing would allow us to look at the top and bottom of the accretion disk, and a left-handed rotation moves clockwise when seen from the top and counter-clockwise when seen from the bottom.
someone else was on about the light shifting not being displayed properly
Bro, I'm going back over older episodes, and have been thinking, all the we up to your most recent, as Im on them as soon as I get notice. But I have to say, and this is NOT a " you should change" gripe, just saying; Love the channel, content, ideology, and shows!
But I noticed I do keep up with topic, UNTIL you go all mathematical, formulae, percenteges, etc...!
I get lost trying to put that in perspective as fast as it comes!
My badd, but, i have to get that off my chest.
I sincerely love this channel and content, but when all that's thrown in 79 wps, I gotta say; "WHAT????"
Hope all is well with you and yours. Stay safe!👍🏿🖖🏿uh
If a ball of Antimatter touches even a bit of Matter than the explosion would throw off chunks of Antimatter. It wouldn't be one explosion, but many like a Sparkler.
I'm definitely not expert (not even close). But I thought due to universal expansion rates that relativistic travel to other galaxies (except andromeda due to proximity) is borderline impossible?
Galactic disasters? Is this about Pluto Nash?
Can't wait for the total destrouction of the univourse