The Fermi Paradox: Gravity

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  • Опубліковано 21 лис 2024

КОМЕНТАРІ • 187

  • @hollycook1419
    @hollycook1419 19 годин тому +65

    Oh gravity, you always keep me grounded!

    • @seriousmaran9414
      @seriousmaran9414 17 годин тому +5

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

    • @iivin4233
      @iivin4233 16 годин тому +2

      But not bonded.

  • @hibbs1712
    @hibbs1712 19 годин тому +25

    Thank you!! Got my coffee ready

  • @MrFancyFingers
    @MrFancyFingers 19 годин тому +32

    The weight of it all.

    • @isaacarthurSFIA
      @isaacarthurSFIA  15 годин тому +7

      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
      @ScienceD9000 13 годин тому +1

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

  • @Yoel_Mizrachi
    @Yoel_Mizrachi 19 годин тому +41

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

  • @michaelporzio7384
    @michaelporzio7384 16 годин тому +6

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

  • @williamlazenby314
    @williamlazenby314 16 годин тому +13

    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.

  • @CopperCooper420
    @CopperCooper420 19 годин тому +18

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

  • @iNimgul
    @iNimgul 19 годин тому +7

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

  • @_Breakdown
    @_Breakdown 19 годин тому +7

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

  • @wolfvale7863
    @wolfvale7863 19 годин тому +28

    "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
      @t.kersten7695 18 годин тому +9

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

    • @808bigisland
      @808bigisland 15 годин тому +4

      True 60s screenwriter prose

    • @isaacarthurSFIA
      @isaacarthurSFIA  15 годин тому +6

      @@808bigisland Though Nimoy always had magnificent deliveries too

    • @ajr993
      @ajr993 14 годин тому +3

      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
      @808bigisland 14 годин тому +1

      @ agree

  • @DABrock-author
    @DABrock-author 18 годин тому +14

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

    • @pandoraeeris7860
      @pandoraeeris7860 10 годин тому

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

  • @cannonfodder4376
    @cannonfodder4376 17 годин тому +2

    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.

  • @hopeandpiece
    @hopeandpiece 19 годин тому +8

    Time is Sight, Gravity is Desire.

    • @frostwolf2175
      @frostwolf2175 17 годин тому +1

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

  • @AlexArthur94
    @AlexArthur94 14 годин тому +1

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

  • @corwinzelazney5312
    @corwinzelazney5312 5 годин тому +1

    I don't see how this could be a filter. A rocky planet in the habitable zone is just as likely to have lower gravity as high. And with lower gravity - even if just a few percent less - space flight would be much easier.
    And the argument involving super earths isn't a well informed one. The fact we've seen so many super earths has far more to do with the limitations of detecting smaller ones, than that they are actually less common.

  • @Cranberrie123
    @Cranberrie123 12 годин тому +1

    Its about time we grasped the gravity of the situation.

  • @CODENAMEDERPY
    @CODENAMEDERPY 14 годин тому +1

    Thanks for the vid!!

  • @HedonisticPuritan-mp6xv
    @HedonisticPuritan-mp6xv 16 годин тому +1

    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.

  • @iivin4233
    @iivin4233 16 годин тому +2

    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?

    • @69Kazeshini
      @69Kazeshini 7 годин тому

      That's hard to measure. My own personal beliefs are that there are certain behavioral patterns that are endemic to humanity. No matter how transhuman or posthuman we become, there would still be traces of our imperfect humanity. Its kinda like when people say, "History doesn't exactly repeat itself, but it sure does rhymes." I think if humanity does colonize space, they would have mostly wisened up, but they would still fear the unknown of aliens.

  • @matthewschwartz8730
    @matthewschwartz8730 16 годин тому +2

    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?

  • @JohnSagin-SimViDeLucis579
    @JohnSagin-SimViDeLucis579 19 годин тому +2

    In early, thanks Isaac!

  • @innerstrengthcheck
    @innerstrengthcheck 19 годин тому +1

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

  • @christophe5756
    @christophe5756 13 годин тому

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

  • @eaglepeakalpha
    @eaglepeakalpha 18 годин тому +1

    Gravity's a real downer!

  • @cavetroll666
    @cavetroll666 16 годин тому

    Thanks for the video

  • @ViewsandLikes-xb4mk
    @ViewsandLikes-xb4mk 17 годин тому +1

    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?

  • @benvandermerwe4934
    @benvandermerwe4934 15 годин тому +1

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

  • @alexv3357
    @alexv3357 4 години тому

    It does need to be pointed out that as energy rises with the square of velocity, doubling the orbital velocity increases the energy needed to reach that speed four-fold

  • @meantweetsandcheepgas946
    @meantweetsandcheepgas946 9 годин тому

    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.

  • @EddyA1337
    @EddyA1337 19 годин тому +113

    Perfect timing, just loaded a bowl

  • @OrchestrationOnline
    @OrchestrationOnline 13 годин тому

    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?

  • @alanbear6505
    @alanbear6505 16 годин тому +1

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

  • @hyrumhanson3390
    @hyrumhanson3390 15 годин тому +1

    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
      @mshonle 12 годин тому

      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.

  • @danielz1767
    @danielz1767 10 годин тому

    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

  • @KtosoX
    @KtosoX 19 годин тому +2

    Under 1 minute gang! Let's go!

  • @anarex0929
    @anarex0929 19 годин тому +1

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

  • @SkyFly19853
    @SkyFly19853 19 годин тому +1

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

  • @douglasdarling7606
    @douglasdarling7606 15 годин тому

    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

  • @brownwhale5518
    @brownwhale5518 19 годин тому +2

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

  • @Ta2dwitetrash
    @Ta2dwitetrash 18 годин тому +1

    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.

  • @taboovsknowledge1603
    @taboovsknowledge1603 19 годин тому +1

    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
      @dragoonsunite 17 годин тому

      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.

  • @babyoda1973
    @babyoda1973 16 годин тому

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

  • @ajr993
    @ajr993 14 годин тому

    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

  • @djdrack4681
    @djdrack4681 19 годин тому +1

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

  • @kingsilvergrass8751
    @kingsilvergrass8751 7 годин тому

    almost make ya wonder if it's possible to train in High Gravity worlds at birth without the worries of Skeletal Structure breaking apart from the High G's alone. this could be the awesome front for a sci-fi style of superhumans.

  • @logangoad3982
    @logangoad3982 8 годин тому

    Drawing us back in, i see

  • @chupacabra304
    @chupacabra304 3 години тому

    I want a antigravity pack, floating around would absolutely be my favorite method of travel 😂

  • @Versudan
    @Versudan 10 годин тому

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

  • @davidroddini1512
    @davidroddini1512 17 годин тому

    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! 😝

  • @falkranduhm10
    @falkranduhm10 18 годин тому

    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
    @t.kersten7695 18 годин тому +1

    gravity is very attractive

    • @Ta2dwitetrash
      @Ta2dwitetrash 18 годин тому

      Even people gravitate towards influence.
      As above so below.

  • @andyf4292
    @andyf4292 17 годин тому

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

  • @djdrack4681
    @djdrack4681 19 годин тому

    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?

  • @robmc3338
    @robmc3338 15 годин тому

    Gravity gets me down.

  • @user-fr6mu3ng8r
    @user-fr6mu3ng8r 19 годин тому

    Nice

  • @erichtomanek4739
    @erichtomanek4739 24 хвилини тому +1

    A joke popular among the other planets in our solar system:
    Earth is stupid.
    Why?
    Because it's the densest planet in the system!

  • @rykazasan
    @rykazasan 18 годин тому

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

  • @nielsandersen6164
    @nielsandersen6164 16 годин тому

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

  • @frankwalder3608
    @frankwalder3608 8 годин тому

    You mention "grabbing a drink and a snack" before watching your videos. That is misleading. My experience is, I need to grab a calculator and science reference books before watching your videos. That is so I can keep up with you. I still have to pause the video many times to absorb your content. I see why you pitch Brilliant. A person would need something like that appreciate your presented material.

  • @stevenhiggins1000
    @stevenhiggins1000 16 годин тому

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

  • @alfredlaalpacadeageofempir9215
    @alfredlaalpacadeageofempir9215 19 годин тому +2

    She's a cruel mistress...

  • @sarcasmo57
    @sarcasmo57 12 годин тому

    Gravity won't get you high.

  • @shadowhenge7118
    @shadowhenge7118 4 години тому

    Gravity isnt a thing, its a side effect
    Also, goldilocks zone includes rocket efficiency, or should.

  • @sulljoh1
    @sulljoh1 19 годин тому +1

    It's workin' against me..

  • @andyf4292
    @andyf4292 17 годин тому

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

  • @WarSongParadise
    @WarSongParadise 17 годин тому

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

  • @nickmcgookin247
    @nickmcgookin247 19 годин тому

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

  • @t.kersten7695
    @t.kersten7695 18 годин тому

    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
      @andyf4292 17 годин тому

      if theres water, there is no problem

  • @PerfectAlibi1
    @PerfectAlibi1 10 годин тому

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

  • @Vivian2290
    @Vivian2290 7 годин тому

    Titan has low gravity, but it still has a thick atmosphere, even if other moons dont .

  • @carbonstar9091
    @carbonstar9091 15 годин тому

    Heavy...

  • @bobmorr2892
    @bobmorr2892 Годину тому

    If gravity was twice as much no one would ever build a plane and fly it? No plane no rocket ever.

  • @leodolterf
    @leodolterf 14 годин тому

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

  • @jenniferholich9592
    @jenniferholich9592 11 годин тому

    I kinda zoned out on some of this math tho

  • @spiffygonzales5160
    @spiffygonzales5160 18 годин тому

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

  • @Orphoid
    @Orphoid 14 годин тому

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

  • @LiquidusEvilus
    @LiquidusEvilus 19 годин тому +1

    Do you believe in gravity
    Dio-

  • @LaboriousCretin
    @LaboriousCretin 11 годин тому

    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.

  • @sulljoh1
    @sulljoh1 19 годин тому

    Only the Big Bang is truly first (probably)

  • @busterhikney6936
    @busterhikney6936 7 годин тому

    ✅ Gravity perfectly proves flat earth. A round object will roll off anything pressed onto it

  • @ArgonZavious
    @ArgonZavious 12 годин тому

    Weird, this ep is only 13 seconds.

  • @orionspur
    @orionspur 14 годин тому

    Ah the smell of gravity in the Fall.

  • @Sophie.van.Rerum.37
    @Sophie.van.Rerum.37 19 годин тому

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

  • @mshonle
    @mshonle 12 годин тому

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

    • @isaacarthurSFIA
      @isaacarthurSFIA  12 годин тому +1

      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
      @mshonle 12 годин тому

      @ 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?

  • @djdrack4681
    @djdrack4681 19 годин тому +1

    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.

  • @patryn36
    @patryn36 19 годин тому +1

    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
      @vidal9747 18 годин тому

      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
      @Ta2dwitetrash 18 годин тому

      You have to be looking from the right perspective.

    • @patryn36
      @patryn36 17 годин тому

      @@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
      @patryn36 17 годин тому

      @@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.

  • @lipingrahman6648
    @lipingrahman6648 18 годин тому

    We must free our souls from gravities pull.

  • @tatsuya2112
    @tatsuya2112 19 годин тому

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

  • @fanOmry
    @fanOmry 13 годин тому

    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)

  • @douglasdarling7606
    @douglasdarling7606 15 годин тому

    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😂

  • @TKTGalahad
    @TKTGalahad 9 годин тому

    What was that?

  • @malcolmt7883
    @malcolmt7883 17 годин тому

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

  • @Jameson1776
    @Jameson1776 19 годин тому

    👍

  • @scottmcdonald5237
    @scottmcdonald5237 13 хвилин тому

    😮😮😮😮

  • @elitemook4234
    @elitemook4234 19 годин тому +1

    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.

  • @taitano12
    @taitano12 16 годин тому

    This is a weighty subject.

  • @JamesMcnorton
    @JamesMcnorton 13 годин тому

    Me too I just lit a joint

  • @nicklinc1
    @nicklinc1 5 годин тому

    TLDR: Earth got Girth

  • @DanG802
    @DanG802 15 годин тому +1

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

  • @frostwolf2175
    @frostwolf2175 17 годин тому

    As every highschooler knows, gravity sucks