The Fermi Paradox: Gravity

[@hollycook1419]

Oh gravity, you always keep me grounded!

[@seriousmaran9414]

Gravity tends to keep almost everyone down to earth most of the time.

[@iivin4233]

But not bonded.

[@williamlazenby314]

Gonna be honest. I've been watching your videos for years. You are definitely the type of person that I would welcome to a fireside beer with friends in the backyard. All of our conversations end up with looking up at stars and wondering.

[@hibbs1712]

Thank you!! Got my coffee ready

[@isaacarthurSFIA]

Perfect!

[@MrFancyFingers]

The weight of it all.

[@isaacarthurSFIA]

Everyone always gives me the good jokes after the episode comes out, I wish I had a time machine to read them while I was drafting. :) Admittedly there are probably better reasons to mess with causality

[@ScienceD9000]

​@@isaacarthurSFIA That's because more people are thinking of the topic after the video is posted than before the video is posted

[@_Breakdown]

2:02 - - fuel to payload ratio 2:06 - - air to drag through

[@Yoel_Mizrachi]

Since you become a father your number of dad jokes increased exponentially

[@iNimgul]

You know its gonna be a good morning when I see Isaac Arthur releasing a vid. Love your content, mate. Cheers from MI!

[@AlexArthur94]

That is a very interesting Fermi Paradox filter that I hadn't thought about!

[@cannonfodder4376]

Listened to this yesterday on Nebula. A deep and informative look at a topic that seems relatively straightforward upon first inspection. The number of things affected by gravity and how they scale with slight increases or decreases is astounding. Certainly a very complex thing to measure when it comes to life emerging and spreading. Fantastic work, Isaac.

[@CopperCooper420]

Why did none of the electromagnetic spectrum invite gravity to the big party? Because gravity is such a downer! 😂

[@hopeandpiece]

Time is Sight, Gravity is Desire.

[@frostwolf2175]

What was, will be. What will be, was.

[@wolfvale7863]

"I speak from pure logic. If I let go of a hammer on a planet that has a positive gravity, I need not see it fall to know that it has in fact fallen." - Spock.

[@t.kersten7695]

and some might not need to see it fall to feel the hammer hitting their foot

[@808bigisland]

True 60s screenwriter prose

[@isaacarthurSFIA]

@@808bigisland Though Nimoy always had magnificent deliveries too

[@ajr993]

Except in star trek the hammer could be ancient Clark tech with anti gravity or teleport through a wormhole or create time dilation or send you in a simulated brain fugue where you perceived the hammer floating upwards

[@808bigisland]

@ agree

[@DABrock-author]

Gravity: It's not just a good idea, It's the Law!

[@pandoraeeris7860]

Anarchy, it's not The Law, it's just a good idea!

[@CODENAMEDERPY]

Thanks for the vid!!

[@iivin4233]

You've made an increasingly strong case that there are no complex aliens--with caveats. But if there are any others at all, it is interesting to think that we will only meet them after we've both expanded into cluster spanning sentient ecoystems. How wise or unwise might we both be by that time?

[@michaelporzio7384]

Leave it to Arthur to drop a video on such a weighty subject as gravity.

[@JohnSagin-SimViDeLucis579]

In early, thanks Isaac!

[@innerstrengthcheck]

Right on time for bed, and with a dad joke to boot! 😂 Thanks again man.

[@christophe5756]

While “Red Giant” by Stellardrone may well be the very sound of the dawning of understanding, that rimshot was pure GOLD! 🤣

[@matthewschwartz8730]

Since you mentioned dragons egg can you help me with a issue I had with it? Since the organisms on the neutron star are subject to many days per second they seem to live and go about their business much more quickly than we do. However being that close to massive gravity wouldn't there time go more slowly than ours? Is it just not as pronounced? So the fact they consider many days as a second for us it is more significant and outweighs the slowing from gravity? Or an oversight by the author?

[@hyrumhanson3390]

A heavy planet having excessive volcanos could be a good thing for life if its covered in oceans. Providing tremendous amounts of materials and metal to disove into the ocean. Giving life a better shot.

[@mshonle]

Or, how about being covered in oceans (earth) and having a volcanic neighbor with a lower escape velocity (mars) to send that material? I think that may increase the chances even more, and given the anthropic principle I’m of the mind that we’d first have to find a reason to rule out mars playing a (weak) role in abiogenesis and our default thinking should be that mars was essential.

[@eaglepeakalpha]

Gravity's a real downer!

[@alanbear6505]

To quote The Tick, "Gravity is a harsh mistress."

[@cavetroll666]

Thanks for the video

[@meantweetsandcheepgas946]

When discussing relativistic speeds, could you please touch on the effects of increasing mass and how that might affect the function of the ship and even the chemistry of lifeforms on the ship. Thank you.

[@ViewsandLikes-xb4mk]

Has there been a fermi paradox video regarding intelligence appearing too early prior to having oil or sufficient natural resources. Or maybe the natural resources are used up prior to space exploration?

[@OrchestrationOnline]

1:00 - or what if what we really mean is "Where are the other life forms that behave exactly like our imagination of who we are and think we'll become in the future?" What if most of the premise of the Fermi paradox is just our imposition of the concept of humanity onto a galaxy that might be composed of alien intelligences that are all completely different from us, and from each other? What if there are millions of such races just in this galactic arm, but we're the only ones that see technology as a means of communication between races, if we're the only ones with the concept of civilisation in the first place?

[@Cranberrie123]

Its about time we grasped the gravity of the situation.

[@HedonisticPuritan-mp6xv]

1. Intelligent life that develops high technology is so rare only 1 species at most masters space travel in any given galaxy at any given time period if at all. Earth like systems and planets have turned out to be very rare. 2. Distances between galaxies are simply too large to cross in a reasonable time period at sub light or even light speed and physics prevents any sort of wormholes or hyperspace. That would explain it.

[@danielz1767]

Would a difference in Gravity change the fundamental way atoms and alike interact with each other? An unimaginable reality where different physical phenomena play out and the structure of matter is different. Thank you for the calming mood and the vast knowledge you share

[@Ta2dwitetrash]

Isaac. Whats your thoughts on math being inherent or man made? The answer seems simple because things were there to count before we were, but there appears to be no clear consensus within the scientific community.

[@anarex0929]

I just read raft two weeks ago😮. I'm reading "ring" now.

[@KtosoX]

Under 1 minute gang! Let's go!

[@SkyFly19853]

even so... there are people who ignore the meaning of " the things catch up with Gravity at the end... "

[@brownwhale5518]

Why is SFIA better than gravity? SFIA will never let or get you down.

[@taboovsknowledge1603]

Perhaps there are more than just the four forces of the universe? Forces we don't interact with. There is matter that we don't interact with. Maybe we can use these forces indirectly to counter the four forces thus anti gravity & anti inertia. Blend it with quantum portation and trans form our atoms into the other force states and the generally theory of relativity isn't a thing.

[@dragoonsunite]

Its a cool idea and forces we and other things were aware of dont interact with is absolutely possible and would be somewhat equivalent to parralell universes basically since they could overlap in space and have no indication even if their properties were identical to all our forces with the caveat that they only interact with each other and not any of our 4 fundamental forces. That said, the thing that is a bit more dubious is whether the eexistence of such forces could counter gravity. Not wholly dubious mind you. In a sense the utilization of the existing forces counters gravity via the release of energy from creating or breaking strong nuclear force bonds so it's not inconceivable that some small negligible normal fundamental force in its baseline state would in a different minimum beside its local minimum exhibit much stronger properties thay over rode gravity or generated effects akin to unlimited energy though probably actually not... I believe while it's not actually a force, though I could be wrong, that there's a couple theoretical partial and space time reactions that posit something to this effect, though, they exist within forces that do effect us, and past I heard such processes result in the universe cascading into the new minimum from the point of first minimum reduction at the speed of light destroying literally everything, so not entirely sure that example is what we want to use. Cant remember if thats the big rip or if I'm conflating another process? Anyway fun stuff.

[@douglasdarling7606]

I was never able to recall the story I read about life on a neutron star I wouldn't say I thought of it often even on any kind of a regular basis but from time to time

[@EddyA1337]

Perfect timing, just loaded a bowl

[@innerstrengthcheck]

Same. Enjoy!

[@lukepaul7931]

Oof

[@jezusbloodie]

An I just rolled a J

[@TheCrazyCapMaster]

Oh boi you’re goin for a wild ride 🤣

[@JohnSagin-SimViDeLucis579]

FIRE IN THE HOLE!

[@babyoda1973]

A blessing and a curse with a very thin line between 😊 Gravity

[@ajr993]

6:25 it would be possible to catch a ride on Star quake emissions or perhaps if you magnetized yourself enough you could traverse magnetic field lines since particles routinely escape a neutron star on those crazy potent magnetic fields

[@logangoad3982]

Drawing us back in, i see

[@djdrack4681]

Here I thought 'ground round' was something I put on the grill. Boy have I been wrong about what it meant

[@davidroddini1512]

2:56 "Earth is already the densest planet in our solar system" Given some of the people I've encountered, I believe it. Talk about dense! 😝

[@Versudan]

After an opening joke like that, exactly like the animation showed I too would throw myself out the airlock.

[@falkranduhm10]

An universe with 10x gravity will have life on bodies that have 1/10th of the useful gravity in our universe i.e. moons, dwarf planets. With even higher gravity asteroids might become candidates.

[@t.kersten7695]

gravity is very attractive

[@Ta2dwitetrash]

Even people gravitate towards influence. As above so below.

[@andyf4292]

if the solar wind ejection velocities are higher near the poles, are the flares more pokey from there?

[@robmc3338]

Gravity gets me down.

[@user-fr6mu3ng8r]

Nice

[@djdrack4681]

IF 2 universes 'collided/intersected' what would be the forces that mediated which 'leaked' into the other? Is it number of forces (think universe with our 4-5, vs one with 50)? Or is it simpler: is gravity or cosmological constant (equivs) multi-universal? Would the universe that prefers enthalpy leak into the universe (like ours) that is entropic? Or vice-versa?

[@rykazasan]

How can one not gravitate to such an attractive topic?😋

[@nielsandersen6164]

Even though gravity is the weakest of all the forces, I find it the most attractive.

[@sarcasmo57]

Gravity won't get you high.

[@benvandermerwe4934]

Liked, commented and subscribed. 🌌🚀👏🏻⚡🥃🇿🇦

[@stevenhiggins1000]

i'd like to think of gravity as more trustworthy, more that gravity will always bring you center :P

[@sulljoh1]

It's workin' against me..

[@andyf4292]

'thermal jeans'? I know we're getting into winter....

[@WarSongParadise]

Could you use electric repulsion to get away from neutron star?

[@alfredlaalpacadeageofempir9215]

She's a cruel mistress...

[@nickmcgookin247]

I wonder if organics can make radio wave. Electric ele could evolve a organ to communicate. Or is that impossible

[@PerfectAlibi1]

Gravity can also help you fly through space with slingshotting ^^

[@carbonstar9091]

Heavy...

[@t.kersten7695]

would gelatinous-style blobs be better suited to live on a high gravity world? just crawling and creeping across the surface and into the cracks and crevices of their homeworld - with or without intelligence? they would still need a (hydraulic) mechanism in their cells and bodies to counter the gravitational pull but wouldn´t have trouble with bone becoming too thick and too heavy and still breaking from the slightest pressure.

[@andyf4292]

if theres water, there is no problem

[@patryn36]

There is no paradox, too many unknown values of necessary parameters to even begin to formulate a meaningful guess. We have only one known chemistry for life, only one known site where life kicked off, and we have no up to date data of any stars or planets out there (we do not have that for own sun since we see it as it was 8 minutes ago). Also digital copies of our conciousness will never be, we are colonies with other organisms and to do anything complex requires coordinstion which means communications and that needs a processing node to efficiently route all that to where it needs to go. Dark energy is a processing error based on the mistaken use of red shift to estimate speed and distanve.

[@vidal9747]

The effect of colonies can probably be simulated even easier than simulating our entire brain. Also, you seen pretty sure dark energy is an error. I understand that this is a hypothesis some consider, but there is not a lot of hard evidence. Affirming stuff so categorically without even providing a source is kind of stupid IMO.

[@Ta2dwitetrash]

You have to be looking from the right perspective.

[@patryn36]

@@vidal9747 if you understand why they claim the reason dark energy is, ie the type1a supernova redshift conflicting with the host galaxy redshift, then you can clearly see their error. I have been trying to see exactly why they claim the universe expansion is speeding up for a while now and that type 1a supernova i mentioned is the start of it and the expansion is not speeding up. Employ logic more than you obviously currently do and you will see this and so much more they are getting wrong and that is long before any math is involved which i will bet money is also seriously compromised at the minimum end.

[@patryn36]

@@Ta2dwitetrash i am, it is called observations plus logic. When i say observations i mean the literal what is seen, not their summaries, and logic shows the rest. Having decent processing helps but in only in how much time it takes and it allows to envision larger slices of the whole picture.

[@leodolterf]

Fermi Paradox? After the congressional hearings? I am confused..??

[@sulljoh1]

Only the Big Bang is truly first (probably)

[@jenniferholich9592]

I kinda zoned out on some of this math tho

[@Orphoid]

The final SFIA video will be: The Fermi Paradox: Sin

[@LaboriousCretin]

Gravitational wave detection meets particle accelerator. If you do the math the Gravitational wave detection part would be big. Gravity and dark energy detection. The smoothness/lumpiness of the universe, CMB relic also points to smoothness as eell as a few other things. Particle decays into photons and quantum and gravitational foam. The work done or the weight of the universe. Black holes evaporating showing one lower limit for white holes. The universe another cutoff regime or limit. 12.5 light year diamiter as a black hole with error bars. Quantum being part of degenerate planckian. But for multiverse theories and quantum part alone one needs to consider universe pair production or deposit ring in wich we would be one of the spikes/universes in a ring from natural cutoffs. One path using gravity to destroy a type of black hole 12.5 light years in diameter. That variant gives a medium to go FTL in up to a point. 17:45 Gravitational mapping of the earths crust and deposits. Keep up the good work and thoughts.

[@spiffygonzales5160]

I think what really happened is they saw us and realized they were ugly so they just left and never came back.

[@LiquidusEvilus]

Do you believe in gravity Dio-

[@orionspur]

Ah the smell of gravity in the Fall.

[@ArgonZavious]

Weird, this ep is only 13 seconds.

[@Sophie.van.Rerum.37]

Oja gravety is power sorce its the ultimate power sorce beyond nucliar

[@Jameson1776]

👍

[@lipingrahman6648]

We must free our souls from gravities pull.

[@mshonle]

Would it be fair to say you’d think it’s not likely we’d find signs of any life on Enceladus?

[@isaacarthurSFIA]

I wouldn't be optimistic about it but I wouldn't completely rule it out either, panspermia is a viable origins scenario still, even if a distant 4th place for likelihood imho.

[@mshonle]

@ Thank you so much for the reply! My thinking is that abiogenesis happened on Earth with the assistance of the LHB and neighbors like Mars playing a weak panspermia role. I’m not quite convinced that hydrothermal vents are good for creating life so it would be exciting and surprising if we discovered it was sufficient. So, you mentioned what places fourth, so what’s in first, second, and third place?

[@fanOmry]

What about a case of -low gravity ,-, *very strong* Planetary Electromagnetic Field? Or... Low gravity, but but you have a significant percentage of that very heavy gas, And the super fine dust that gett carried to all levels of the atmosphere, has photovoltaic properties. So it interferes with Hydrogen erosion. Would that work that way? Like... Could it be a terraform pathway for the moon? That heavy gas to slow down erosion because even though everything in the air floats on it, some of it will be among it because it will not be a majority gas, just little more than a trace component. and among it, it slows every other gas molecule that bumps into its molecules. At the low levels of the atmosphere, less goes up. and at the upper parts... The Dust I described, that acts like that proposition for a Mars terraform. Aluminium particles, fine enough to even be carried up in the barely there Atmosphere of Mars. On Mars it is supposed to act as greenhouse driver. What I suggest is more of a silicone dust thing that will act to capture any ions. then falls down to the ground, where it gets processed ( Industry; Terraforming the Moon/ Geology of a world that releases such dust via volcanos)

[@tatsuya2112]

Gravity is like taxes, keeps letting us down but it's very hard to escape it.

[@TKTGalahad]

What was that?

[@douglasdarling7606]

I wouldn't say that we're searching for intelligent aliens would rather complex tool using aliens after all our own intelligence is often lacking in evidence😂

[@malcolmt7883]

A physicist would never say that being fat is less attractive.

[@djdrack4681]

Shoutout to Sergio whoever you are, for the great graphics. Hopefully you aren't locked in Isaac's basement; like how Danny is locked in Simon's.

[@taitano12]

This is a weighty subject.

[@JamesMcnorton]

Me too I just lit a joint

[@elitemook4234]

It's certainly interesting to imagine Earth being unique in the Galaxy as the only planet to produce life with gravity light enough to allow space travel.

[@frostwolf2175]

As every highschooler knows, gravity sucks

[@DanG802]

I don't believe in gravity. Everything just sucks.

[@lukepaul7931]

It’s time aka calculations aka ya mum Bc stuff means calculations bc now is now and that’s what it means to be conscious… that’s why if you take the size of the universe to a black holes event horizon, the event horizon is larger than the universe… gravity gotta be big enough to make time, like yang and yang is oil and water and that’s kinda like stuff and anti stuff but there is a lil stuff is left over and what is not nothing so we gotta do calculations so that’s what we doing

[@ajr993]

Actually, gravity doesn't pull you down, it keeps you together

[@AlexArthur94]

It keeps planets, stars, and galaxies together, but something as small as a person is held together by forces other than gravity.

[@ajr993]

@AlexArthur94 it keeps you together with the planet, not pulling you down to the planet, which is what I meant with this joke

[@Sophie.van.Rerum.37]

Light speed is slower in our admisweer then in the vacuim

[@pandoraeeris7860]

This is an inherently stupid take.

[@Sophie.van.Rerum.37]

Broer isaac look ad it like thjs kupiter haves its gravety pulling and the sun does two and pulling

[@pac-man7553]

Why do all these American documentaries use narrator’s with speech impediments?

[@External2737]

The author has discussed his speech impediment in the past. If you prefer AI, go to those channels. I prefer this level of research.

[@Sophie.van.Rerum.37]

Jupiter

[@sulljoh1]

Jupiter is indeed massive..

[@SoumyaGuharoy-m9r]

3rd to comment.

[@isaacarthurSFIA]

Almost!

[@Nameless_josh]

First

[@FreddyBlue-j5m]

First