Special thanks to Lara Reading for helping me with the science behind this video!
@windowsxpmemesandstufflol
4 жыл бұрын
Astrum hi I’m 59 seconds in the future
@Hermes_Agoraeus
4 жыл бұрын
Since the heliosphere is mentioned in the video, can you tell us its largest possible size (relative to our sun)?
@MasonGunneson
4 жыл бұрын
Too bad no one helped you with the Metric system... Enough quoting distances in miles already. Get with the SI units and leave that nonsense alone.
@ZeroOskul
4 жыл бұрын
There is only one Solar System, it is the planetary sytem that orbits Sol. What the Hell other Solar Systems are you talking about? That's like pointing at a whale and saying that's how big humans can get. A planetary system or star system other than that orbiting Sol IS NOT a Solar System any more than a whale is a big human. Learn English and THEN AFTER LEARNING competently express in English. You make the whole species stupider by authoritatively being wrong.
@ZeroOskul
4 жыл бұрын
@@bragginrites8586 Look Up General Relativity. Shut up about Newtonian Gravity, it is an illusion debunked by Einstein who replaced it with General Relativity. Your question makes no sense because Gravity does not exist, because Einstein debunked it a century ago.
@AdrianXpression
4 жыл бұрын
The incomprensible scale and distance is as haunting as it is fascinating
@libertyprime69
4 жыл бұрын
Astrum has a video where he depicts the Sun as a grain of sand and then proceeds to drive to the nearest star, which- on the same scale, is 30 km away.
@pipsamuels5578
4 жыл бұрын
Lmao I shouldn't be surprised to see my fave here but I am!
@zaugitude
4 жыл бұрын
Well said - CheerZ!
@sonofgodsdad3227
4 жыл бұрын
Also the fact that we are currently chilling inside this insanity...
@sunnyjim1355
4 жыл бұрын
Not really, because as it's incomprensible far away, then it's not haunting.
@ChronicNewb
3 жыл бұрын
The existence of the oort cloud makes me feel pretty special being so close to our star.
@DR-mp4gv
4 жыл бұрын
Playing Stellardrone for this. Perfect👍
@TikiPotion
4 жыл бұрын
Yay another one! I've been binge watching these for two days now
@ekarae.ntonoba1370
4 жыл бұрын
This has to be my favourite video from you. Thank you
@tghadi
3 жыл бұрын
This channel is simply the best channel for astronomy on KZitem
@obrecht72
4 жыл бұрын
Just happened to find this jem in my feed. I think the mind blowing beauty in this video compliments the mind blowing beauty of the universe as we know it. Great work.!
@IceLordHellFire82
4 жыл бұрын
Just crazy interesting! Keep up the good work and great videos👌
@goonerash
4 жыл бұрын
9:12...you had to click..!
@SassInYourClass
4 жыл бұрын
Brady Haran is going to be unhappy to learn that the Voyager spacecrafts still haven’t left the solar system.
@Jondiceful
3 жыл бұрын
Great video and excellent explanation. One small correction. For your idealized infinite-range solar system to work, it must inhabit a universe that is not expanding. The reason galaxies are drifting away from each other, is because the rate at which space is expanding is greater than the rate at which their gravity wells is causing them to fall towards each other. It is also why the observable universe is not the same size as the universe we live in. At the extreme limits of observation, the space between us and those distant galaxies is expanding so fast that not even light can keep up. Because the rate of expansion is accelerating, not only will we never see what is beyond the edge of the visible universe, those galaxies we can see now will eventually fade into darkness as well. None of this was the topic of your video, so it makes sense to leave it for simplicity's sake, but I still feel compelled to ensure it gets an honorable mention, even if that is at the edges of a rapidly expanding comments section.😎
@cadebritt8001
3 жыл бұрын
Wow you just made so much sense to me I think my brain hit a light. Thanks.
@AnAmbientGrey
3 жыл бұрын
I thought I had my mind at least approximately wrapped around the scale of the Oort Cloud but nope, this video has me surprised once again
@adventureswithdogs2251
4 жыл бұрын
Even back in my high school years, (and those were a while ago!) we were taught that the solar system included anything affected by the Sun's gravity. At that time, though, it wasn't considered to be as far as it is now.
@SpaceCadet4Jesus
4 жыл бұрын
The boundary changes every generation.
@Caiohq1
3 жыл бұрын
I learned something new about gravity from this awesome video *the Hill Sphere explanation* Thank you, keep awesome 👍
@weslanstr
4 жыл бұрын
Ohh! So basically the affect of gravity can be compared to a circular cloth in one more way! If graphed to infinity, regardless of the size, the influence with only come incrementally closer to 0, but never 0! Its like a function that only "converges" to 0!!!
@fury1030
3 жыл бұрын
in that hypothetical universe the object would also escape if its moving fast enough away. slowing down by the gravity but never reaching zero velocity
@milansajan1001
4 жыл бұрын
*Good♥️Explana†ion.*
@kmatcyk
4 жыл бұрын
Fantastic video. You have given me much to think about. Thank you!
@UlrichVIII
4 жыл бұрын
if there's one thing i like about humanity it would be the ability to do science. Nice video
@Z3roX-56k
4 жыл бұрын
So much to learn.
@jrgenlundegard8816
4 жыл бұрын
Well, although the gravitational pull would extend that far, at one point the expansion of space would exceed the speed of the object in orbit. Even if the object would be traveling towards the star, space would exponentionally increase between them. An "anti-event horizon". I wouldn't count that a part of the solar system.
@saytaimoor
3 жыл бұрын
the universe is so fascinating and i am living in it
@Spyke114
3 жыл бұрын
Looking at the graph of the local cluster, I was surprised by how many of those I've been to and shot other people down in while playing Elite Dangerous.
@braddles8684
3 жыл бұрын
I feel like if we were to ever be able to comprehend the incomprehensible size of the universe, or even our own solar system for that matter, in all of its glory, The human mind would explode
@sstaners1234
3 жыл бұрын
I feel like if I traveled back in time and told this to my 3rd grade teacher (Mr. Moore) his head would explode.
@abcdefg3898
4 жыл бұрын
The song in the video, i listened to it when i was exploring in elite about 7 months ago, good times
@zanychelly
4 жыл бұрын
Please cover that R136a1 Thanks
@Glostahdude
3 жыл бұрын
Great channel!!
@oldgordo61
4 жыл бұрын
Fascinating that would explain why Jupiter's hill sphere despite it its greater mass s smaller than Neptune's.
@bobthompson4319
3 жыл бұрын
WOW that's crazy. Gravity isnt strong but it has an almost infinite reach.
@colincampbell3679
3 жыл бұрын
The only problem with the distance idea between the single star and any object alone near the star is, the more that object is moving away from the star in distance when there is no other large mass to compete with the star the weaker the gravity be between them and over time that object will still stop orbiting that single star! and as the star ages the gravity will change and get weaker so the orbiting object will tend to drift away more and more until it is no longer in orbit of the single star.
@illskills4801
4 жыл бұрын
thank you buddy
@SamuelEstenlund
4 жыл бұрын
Wait. The expansion of the universe must overcome the gravity of one star at some dostance, right? Galaxies close enough to each other are pulled towards each other, like the Milky way and Andromeda. Galaxies farther apart will find their distance is constantly growing, since the space between them is growing faster than what the gravity between them is pulling them together.
@chrisjoadventures7725
4 жыл бұрын
Awesome video yet again! Any chance you’ll do the “Parker Solar Probe mission” next?
@Mr12324567890
4 жыл бұрын
If we all are influenced by constant gravitational-orbital wind that extends along with the universe, it could be used as propulsion!!! we could use it to travel around, maybe a gravitational propulsion, combined with regular. And you could think, hey, the universe is all connected, an for sure the observable universe could probably be within an other unknown gravity field.
@elithegreat6463
4 жыл бұрын
Of you want your brain to hurt, just think about Astronomical distances🛸🚀🛰🤪
@issafacelift
4 жыл бұрын
My brain doesn't hurt thinking about that one, rather I feel incredibly disappointed knowing I will never get to see what's out there in all its glory for myself. It almost begins to feel unfair, that is, until I remember how lucky I am to experience this life that may be the only life in the entire universe.
@herculez6087
4 жыл бұрын
Good video
@wopsieneter
4 жыл бұрын
So gravitational influence isn't something that could be null based on distance from the center of mass then...? Meaning if you had just one sun in the entite universe, everything would basically just turn around this one point because theres nothing else to overrule its gravitational influence... This is crazy
@fallendown8828
3 жыл бұрын
i leveled up my knowlage in this video!
@lc285
4 жыл бұрын
How does the solar wind not push a satellite off course?
@julianturner69420
4 жыл бұрын
It does if the sattelite is not protected by a magnetic field of a planet, and it is close enough to the sun. Mars missions usually require several course corrections because of the solar wind. Solar wind too weak to have a noticeable effect at the distance of voyager.
@Everie
3 жыл бұрын
Imagine if one solar system have 1.000 light-years
@PorkyHontas
4 жыл бұрын
I remember back when NASA sent the Voyagers up. So much has been learned because of them.
@papertowel2458
4 жыл бұрын
They're bigger than Uranus! Get it? It's because I'm lonely...
@cyanidejunkie
4 жыл бұрын
Genki Dama You sure you’re not lonely because you still make Uranus jokes?
@papertowel2458
4 жыл бұрын
@@cyanidejunkie Impossible. That can't be.
@matthewholm630
4 жыл бұрын
Lmao
@emiliocastilhopiano8631
4 жыл бұрын
So can I say that the biggest solar system is in the most isolated star we know of? Is there a star like that?
@PronatorTendon
3 жыл бұрын
I wonder what the maximal orbital distance is for an object orbiting the sun. It seems to me that there would be a threshold beyond which the orbital velocity is too low to keep up with solar velocity. I'm sure I could figure it out if I looked up a value and recalled an equation or two
@hollow-xiii-
4 жыл бұрын
There is only one Solar system, the rest are called star systems.
@Релёкс84
4 жыл бұрын
There are literally 3 people alive who actually care
@TEDavis
4 жыл бұрын
But could imagine that Betelguise could be so old a sun that it's possible solar system ( by it's enormous scale ) had exhausted eons ago or it's planetary system was so far flung in orbits that they can't be seen? We see the solar system, our solar system reflected in an atom and it's elements. What zooms in may actually zoom out in another scale direction
@eadwulfslecgwyrhta3015
4 жыл бұрын
@@Релёкс84 There are far more than 3 people who care, that is evident if you read the comments to this video alone.
@rggalas
3 жыл бұрын
Where u found such nice map like on 8:28?
@jari2018
4 жыл бұрын
The planetary system around the universes biggest black hole must be galactic.
@jari2018
4 жыл бұрын
@@jme7298 ,A star could orbit that black hole ,is then a starsystem ,I guess it would -like a offspring with multiple mothers -maybe this should be redefined -The star is the "stepmother" but the planet orbits the black hole
@drriteshkumar3843
4 жыл бұрын
Hi..Is there any explanation regarding why both nearest planet to Earth i.e Venus and Mars don't have their magnetic field
@alaindubois1505
3 жыл бұрын
I took the title literally as if examples of planetary systems would be given that have planet orbits much larger than ours or systems with hundreds of orbiting planets. I'm interested in the variations of solar systems that may be coming into view now. Is there a recipe for stable systems? Earth-sized and Earth-like planets are being searched out. Do we need a spinning molten metallic core and a proactive shield to develop living beings? Earth's life developed with a moon and seasons. Could life develop on a Planet X with a year being hundreds of Earth years spent mostly in the outer heliosphere, and also intersecting the inner planetary region? Could a larger-than-Earth planet develop long-life hibernation periods or a way of retaining or generating at least minimal heat during hundreds of years in the outer orbit? Why hasn't a movie been made about the Annunaki, and develop a reasonable scenario that entertains the idea of Earth being visitable for short periods from Planet X beings?
@lunapriscillaripper
4 жыл бұрын
So that means you agree that there can be extra terrestrial life on other planets?
@E.a.Z.S.e.n.T
4 жыл бұрын
Uh.. Yeah I learned or actually kinda figured out all this like 16 or 17 years ago..
@mononoke721
3 жыл бұрын
The only way for a smaller object caught in the gravitational field of a star to escape it is for it to commit suicide.
@douglassnodgrass7678
4 жыл бұрын
Hey Did you realize lithium and beryllium are sun properties
@Clearlight201
3 жыл бұрын
"The Insane Size of the Largest Planetary Systems" ... Nearly 9 minutes later: er, no idea really, anything up to almost infinite. how long's a piece of string ?
@ethanlivesley6392
4 жыл бұрын
Can a star have a moon if it is cool enough and at the perfect distance away?
@istvansipos9940
4 жыл бұрын
but? but... then it is a planet. or an asteroid. or a meteor. And maybe I forgot to mention some sun-orbiting objects now. but moons orbit planets
@daos3300
3 жыл бұрын
then it's not a moon, it's a satellite. moons need planets to orbit, as already mentioned.
@lucascumper
4 жыл бұрын
It's actually systems not solar systems. Our system is named the solar system after our sun solar.
@antman2826
3 жыл бұрын
I didn’t realise that gravity had a near infinite reach. In a universe with only two bodies they would still be in orbit no matter how far they were from one another. Fascinating
@Redtear
3 жыл бұрын
@Ant Man What is amazing is Gravity is the "weakest" force in the universe. Longest reach however least magnitude. Pretty mind blowing!
@KomsoMango
2 жыл бұрын
Why? It is also part of Fabric of space-time pulling as a representative as "gravity". So this theory is the answer!
@LisaAnn777
Жыл бұрын
Yeah there's no such thing as "zero* gravity. Everything in the universe effects each other in some way.
@DirtyBobBojangles
10 ай бұрын
I mean I understood that when I was 5. It's a fairly basic concept...
@sidpomy
8 ай бұрын
They may affect each other gravitationally, but if they’re far enough apart for dark energy to come into play, they couldn’t be considered in any sort of orbit I don’t think. Things far enough apart can be causally unlinked by the expansion of the universe.
@kamalkhan5305
4 жыл бұрын
The Oort Cloud is a fascinating region.
@sunnyjim1355
4 жыл бұрын
I've never heard it refered to in that way before.
@michaellidster1389
4 жыл бұрын
If you tell the right stories about it , it can be fascinating
@yoshikhurazi1769
3 жыл бұрын
There could be dozens of planets in that space of comparable mass to Mars or even Earth plus potentially hundreds more like Pluto or Eris. We just have no way of knowing till we can actually observe there but even assuming a lower end projection of 4 earth masses worth of matter being out there, that's more than enough for quite a few planetary scale bodies.
@dazza2350
3 жыл бұрын
Agreed, Kamal!
@dumbledor22
3 жыл бұрын
"i" always thought it's called the "oppik" oort cloud.
@MrTortugaa
4 жыл бұрын
I just hope we someday make it out there.
@epicn
4 жыл бұрын
I want to at least visit mars one day
@belstar1128
4 жыл бұрын
Maybe 1000 years from now
@hypnocilicdreams
4 жыл бұрын
I hope to party on Pluto or at very least, dance in space
@oceanlawnlove8109
4 жыл бұрын
we'll prolly be extinct b4 that
@idcgaming518
4 жыл бұрын
As much as I'd like to be an optimist... yeah, you're probably right.
@timsmith6675
4 жыл бұрын
As a happy, single introvert, I watch an extremely large content of science videos. I think the quality of your graphics/illustrations and information is comparable to National Geographic and PBS Nature. That's why your videos are such a treat for us science enthusiasts. 😃
@metametodo
4 жыл бұрын
I wholeheartedly agree. I was just now, by the start of the video, thinking about how the work done on this channel has great educational qualities, and that it emanates passion and incites curiosity very well on us viewers. That's the best thing a scientific divulgation channel can offer in my opinion.
@SocksWithSandals
4 жыл бұрын
I'm married, and my wife had no idea that Venus was a twin of Earth, or that Jupiter has clouds and moons. She was in awe that everyone's dawns and sunsets could turn the Moon red.
@lostsquirrel788
4 жыл бұрын
Check out sea chanell
@romanempire1405
4 жыл бұрын
I Dont Like To Watch. I Like To Read
@ActuallyAndre
4 жыл бұрын
@@romanempire1405 cool, but who asked?
@tomfieselmann5906
4 жыл бұрын
That image at 6:09... I understand it completely, but it's fascinating. Can you delve into that in a complete episode?
@lightspeed9762
4 жыл бұрын
It reminds of the view of packed cells in biological tissues like skin for example :D
@axelgrabalos8769
4 жыл бұрын
@@lightspeed9762 thought exactly the same
@Derek_Gunn
4 жыл бұрын
What do the glowing bits mean?
@rilluma
4 жыл бұрын
@@Derek_Gunn i think there is multiple hill-spheres on top of each other so the object would be under the influence of multiple hill spheres
@GolddenWaffles
4 жыл бұрын
Derek Gunn Yes, Overlapping Hill Spheres
@TheRealGuywithoutaMustache
4 жыл бұрын
So star systems vary in size quite a bit, our universe in general is just filled with so many fascinating things it's unreal
@summersky77
4 жыл бұрын
I just want to thank this channel for creating amazing content and for making it available on KZitem. I don't think that gets said enough and many of us take for granted that it's freely available on this platform.
@kevanhubbard9673
4 жыл бұрын
I always feel sorry for pioneer 10 and 11 they're leaving the solar system too, and New horizons,but no body ever mentions the poor old pioneers.
@Inside.Frame1
3 жыл бұрын
Pioneer 10 sent its last signal to Earth in January 2003, Pioneer 11's last transmission was received on September 30, 1995, New Horizons is still in the Kuiper Belt.
@jimmytheshadowleviathan7243
3 жыл бұрын
I mean, no one mentioned like 90% of the other astronauts that went to the moon other than neil armstrong and buzz aldrin, because being the first to do something extraordinarily hard is a lot cooler than doing it later
@ximalpopoca735
3 жыл бұрын
... I miss them the most... maybe in the far future with a far out tech we'll recuperate them as monuments of freedom and adventure...
@renejean2523
3 жыл бұрын
@@ximalpopoca735 - Maybe. But they're hurtling away from us at 35,000 mph, so the sooner the better really. Hell of a trip for a museum piece though.
@coletrain411
3 жыл бұрын
@@ximalpopoca735 stellaris player?
@annoyed707
4 жыл бұрын
How do multi-star systems compare in size?
@Madhijz
4 жыл бұрын
Was hoping for that to come up aswell
@astrumspace
4 жыл бұрын
I was thinking of doing a seperate video on that :)
@sunnyjim1355
4 жыл бұрын
Their combined mass is obviously going to be bigger than other solar systems with less singular/combined mass. Next.
@Sashil01
3 жыл бұрын
@@astrumspace *separate 🧐👓🎓 Best check oneself before one wrecks oneself 🦉 YW
@xaj1543
3 жыл бұрын
@@Sashil01 Best stop oneself, before ones rap, embarrasses oneself. 🤔🤦🏾♂️🤷🏾
@N0Xa880iUL
4 жыл бұрын
Very informative video! Nicely done!
@craigmichaelcurtice3013
4 жыл бұрын
Cuz this channel rocks it's professionally done with heart
@BongLeach
4 жыл бұрын
Thank you. In all my years I've never heard of the "hill sphere"!
@LordLOC
4 жыл бұрын
Maybe you've heard of the other term used for Hill Sphere, the Roche Sphere (and this is not related in any way to the Roche limit or Roche Lobe, which are different things altogether?
@ralienpp
4 жыл бұрын
Same here. I see it as a Voronoi polygon, but in 3D :-)
@21megawatts92
3 жыл бұрын
It can be also called the Sphere of Influence!
@thomassosby9068
3 жыл бұрын
I do believe the term the poster is using is the heliosphere. I could be wrong though.
@mochiyeosang1908
3 жыл бұрын
@@thomassosby9068 no, thats completely different.
@smallstudiodesign
3 жыл бұрын
Thanks for pointing out how the limit of gravitational pull is called a “hill sphere”.
@RandyJames22
4 жыл бұрын
Escape velocity: the pressure of one photon.
@sunnyjim1355
4 жыл бұрын
photons don't have mass, so cannot inert pressure.
@Googaliemoogalie
4 жыл бұрын
@@sunnyjim1355 because photons carry energy, they also follow the law of conservation of momentum. So since photons have momentum, it can totally have radiation pressure. This is how light sails work
@Googaliemoogalie
4 жыл бұрын
Escape velocity on earth is too much for photons to provide energy for. Unless you have death Star type lasers I suppose. Think about how much a mirror would recoil of you pointed a flash light at it. It's so small it wouldn't amount to anything
@michaelskywalker3089
4 жыл бұрын
Statement intrigues as reasonable equivocation. The minimum escape velocity of the smallest and most common gauge particle depends on the minimum or threshold of radiative pressure this single photon can exert. Since photons have zero rest mass then the minimum amount of force required depends on the threshold of kinetic energy. If the photon does not meet this kinetic energy minimum then it cannot escape a given gravity well. ........ Take the interior of our solar system's star, Sol for example. It is famously noted that photons from the interior cannot exit the surface for centuries, but what if a photon had a high enough momentum to escape the radiative pressure surrounding it as well as the gravitational well and nuclear convection pressure [magnetic flux etc] . If the velocity vector pointed up this high energy photon might escape the Sun in a single instant!
@ChadDidNothingWrong
4 жыл бұрын
@@sunnyjim1355 energy has a mass equivalent.
@John-oe5nb
4 жыл бұрын
Me: "Wow, that's a long way". Infinity: "Hold my beer."
@libertyprime69
4 жыл бұрын
"Hold my figure eight.... sideways."
@sunnyjim1355
4 жыл бұрын
@@libertyprime69 NPC Rich Smith: report back to Maintenance Division for recalibration. Immediately.
@daos3300
3 жыл бұрын
meme: tired everyone: jaded
@slowfudgeballs9517
4 жыл бұрын
Not sure about the billion light-year solar system. Is this including how the universe's expansion can overcome gravity?
@deadworld66
3 жыл бұрын
Imagine if we humans could feel the speed that we're really moving at on this ball of rock. 🌎💨💨💨
@sk-sm9sh
3 жыл бұрын
Careful of what you wish. We can only feel speed when we come into contact with objects that move through space in different speed than ours. Earth goes 110 000 km/h around the sun. I personally would rather hope I never come anywhere close to anything that is going on this order of speed but in different direction than me.
@coletrain411
3 жыл бұрын
@@sk-sm9sh careful mixing up imagining something with wishing for it.
@shadezman
3 жыл бұрын
You can't feel the speed if your speed is constant
@coletrain411
3 жыл бұрын
@@shadezman the keyword in his comment was imagine. You’re welcome❤️
@sk-sm9sh
3 жыл бұрын
@@shadezman you're confusing feel of acceleartion to feel of speed. We feel speed by either seeing objects fly past us or by feeling the wind blown in our face. For example a convertible goes on highway, in constant speed, would you say that you don't feel the speed?
@darth856
4 жыл бұрын
Fascinating. We have discovered some objects, such as Sedna, with elongated orbits that takes them very far away from the sun. Not nearly as far away as one light year though.
@tuatha1337
4 жыл бұрын
An "effectively" infinite distance between two bodies should be possible due to cosmological expansion, right? The strength of the gravitational force would weaken and approach zero kind of like how light waves redshift as the object approaches the cosmological horizon. So the 'orbit' would look more like a hyperbola approaching a straight line?
@astrumspace
4 жыл бұрын
Only in an expanding universe. For the universe to be expanding, we think there would also need to be dark energy. It's really a hypothetical example anyway :)
@richardhauer8391
4 жыл бұрын
@@astrumspace True, but the math to include the expansion would be quite simple: If we assume the expansion of the universe is 70km/Mpc everywhere, our sun's influence would end where the accelerations of gravity in free fall and acceleration from the expansion cancel out. That happens at only about 800Lj in an otherwise emty environment. (an ejected star from a galaxy for example) r=sqrt(m*G/H) from G*m/r^2=H with G as gravitaion konstant, m the solar mass, r the distance and H the Hubble constant, if I didn't make a mistake here.
@michaelskywalker3089
4 жыл бұрын
Also, if the universe contracts and expands semi-chaotically then a reasonable guess at the largest solar system to ever be in existence might depend on a fractal calculus that would determine a probable maximal distance between bodies. Interestingly, an "orbit" might exist in terms of fractions of a second and be felt as a murmur across the expanse of the cosmos by the orbiting body.
@Trainwizard
4 жыл бұрын
Stellardrone's Eternity makes my soul melt every time I hear it! Amazing choice of soundtrack for a great video.
@simonesanchi300
4 жыл бұрын
Please change the background music on your next video. I always almost fall asleep while I'm watching it.🙈😂 Great Video though!
@DR-mp4gv
4 жыл бұрын
You need more sleep then.☺
@simonesanchi300
4 жыл бұрын
@@DR-mp4gv I prefer watching Astrum;)
@eduardjsx
4 жыл бұрын
What sets Astrum apart is his calm videos (in my opinion). It’s almost like ASMR ... so I watch his videos when I am about to go sleeping :) Helps a lot!
@simonesanchi300
4 жыл бұрын
@@eduardjsx Great Idea! Makes absolutely sense.:) But in a way, for Astrum it's quite contrproductive, because it prevents me from watching more of his videos because i fall asleep.;)
@Deadeye313
4 жыл бұрын
In the last example, if the universe is expanding, would there be a point where the expansion of the universe itself overcomes the pull of gravity?
@jackgeist3803
3 жыл бұрын
Yes. This is the current working theory behind the heat death of the universe. Entropy will increase to 100 percent and no energy will be generated any longer.
@adm0iii
3 жыл бұрын
Technically, the definition of the hill sphere isn't affected by the expansion of the universe. However, at distances beyond thousands of light years, the definition of the hill sphere has little effective meaning for multiple reasons, such as orbit times exceeding the age of the universe, which is coupled with its expansion.
@jackgeist3803
3 жыл бұрын
@@adm0iii at parts of the universe, the rate of expansion has already reached velocities that make it, theoretically, physically impossible to catch up to those expanding parts.
@maryann2628
2 жыл бұрын
depends of the mass for galaxies its millions light years to billion light years
@2ndAveScents
3 жыл бұрын
I think one of the reasons I love Astronomy and Cosmology so much is because it makes some of the small petty and annoying things I deal with on a daily basis feel that much smaller, and even bigger problems feel insignificant against the backdrop of the unfathomable size and scale of the universe we live in. It makes it easier to put away all those unreasonable fears and worries at night and fall asleep, reset and come at the world with a better outlook the next morning. That’s probably why I watch videos like this every night. David Butler is one of my favorites.
@catchableorphan
4 жыл бұрын
In a universe with one star and one orbiting object. The object would not need to be "infinitely" far away to escape, it would only need to achieve a distance that would put over the "cosmic horizon" assuming this made up universe is expanding like our own.
@SpecialEDy
4 жыл бұрын
Gravity could still be acting at that distance. But gravity acts at the speed of light, so would it be more appropriate to say that objects which are moving away from each other at light speed, even if they are still receiving past light and gravity from each other, are no longer gravitational bound, since they are in essence on an escape trajectory?
@Jason-io2vy
4 жыл бұрын
Without anything else in that universe would there be any dark energy to push space apart? They would probably always be bound to each other.
@LunaticTheCat
4 жыл бұрын
Very true, the only thing faster than the speed of light is the expansion if the universe.
@jacobcastro1885
3 жыл бұрын
8:00 only escape is infinite distance? An escape velocity doesn't exist in a 2 bodied universe? I would think an escape velocity could be calculated that is less than the speed of light, certainly less than infinite speed. Unless even at V=infinity-1, at distance = infinity-1 for 2 hydrogen atoms, means that eventually (time=infinity-1) the bodies regroup. [Massive time = massive cumulative effect of gravity causing perpetual deceleration and reversal] Perhaps. Food for thought.
@catchableorphan
3 жыл бұрын
@@jacobcastro1885 I think it would be determined by the rate of expansion of our two body universe. In the video he doesn't mention an expansion rate for the example solar system. However in the universe we live in we do have a rate of expansion that creates a "cosmic horizon". That horizon can be reached given enough distance or time between two objects that will cause them to become "causally disconnected" and after that they cannot rejoin each other ever again. But you are correct in your assertion if the example universe is static.
@playahship5786
4 жыл бұрын
Wishing you all abundance of love and knowledge. Remember, where you go, wherever you are, always know! someone you don't know is wishing you the best.
@annaliseoconner9266
4 жыл бұрын
Thank you for such a lovely comment during this time. Best wishes of health and happiness to you as well.
@centauria9122
4 жыл бұрын
Proxima Centauri: Am I a joke to you?
@gurrenlagannsc8658
3 жыл бұрын
(Taking an alternate interpretation here) Proxima Cen's orbit is really small. Its only around 8500 AU in its SMA. Its also dwarfed by those stupid systems like Fomahault, where Fomahault C is 2.5 light-years away and orbits perfectly fine.
@daos3300
3 жыл бұрын
the mind boggles not at the beauty of our universe, but at the inanity of yt comments
@peterhumphreys9201
3 жыл бұрын
...and it's the same on almost every video. Some people must have been born just to be stupid on KZitem.
@d4rk0v3
4 жыл бұрын
I see an Astrum notification, I click.
@goremall
4 жыл бұрын
They can't get bigger than yo mama... Oooooooo 🔥
@SpecialEDy
4 жыл бұрын
A solar system could technically be an entire galaxy or group of Galaxy's. Our sun is orbiting Sagittarius A Star, as is the entire galaxy, and I'd wager that the barycenter of the galaxy lies within the event horizon of Sagittarius A.
@Jafflefields
4 жыл бұрын
I'm pretty sure Sagittarius A is a supermassive black hole, not a star
@Nolan_L
4 жыл бұрын
@@Jafflefields the name of the black hole is Sagittarius A*, with the * pronounced as "star."
@Deeplycloseted435
4 жыл бұрын
The barycenter of our solar system isn’t even inside of the Sun, mostly because of big-ass Jupiter. Maybe one day we can measure the barycenter of the galaxy?
@raahimhadi4905
4 жыл бұрын
@@Deeplycloseted435 lol
@grahamhill676
4 жыл бұрын
@@Jafflefields Black holes are stars
@lcchocolate59
4 жыл бұрын
What's with KZitem tacking on 5 minutes of commercialsto video's? I AM STARTING TO HATE KZitem! One video had 8 minutes of commercials before the actual video that I WANTED to watch started. Shame on KZitem!
@tyren818
4 жыл бұрын
UBLOCK
@Z3roX-56k
4 жыл бұрын
Firefox.
@pansepot1490
4 жыл бұрын
There’s the skip button. If you skip after 30 seconds the content creator gets paid. I assume you want to support the channel. Btw 8 minutes it’s not all that long. Quite a few times I had 20+ minutes long ads before a 10 min or so video.
@astrumspace
4 жыл бұрын
Yes, as a content creator that is paid from the adverts, please don't ublock. However, skipping the ad as soon as the button pops up is fine, it doesn't matter how long you watch the ad for :)
@Z3roX-56k
4 жыл бұрын
@@astrumspace Sweet;.
@CF-cm2ye
4 жыл бұрын
Voyager 1 & 2 will just keep going on and on. I wonder if in the future it would be possible to catch up to them .
@CF-cm2ye
4 жыл бұрын
Also Stella winds blow me away. I never heard of them. Man my teachers were stupid.
@omnianima4540
3 жыл бұрын
I think if we wouldnt be able to catch up to them in humanities life time, we will never be able to reach anything outside our solar system, which would be a pretty depressive thought, because just by definition, the speed of the voyagers, probably wouldn't reach anything outside the solar system in humanities life time.
@maryann2628
2 жыл бұрын
@@omnianima4540 not even the inner oort cloud it takes likes a hundred thousand years for both voyager to escape the sun gravity
@Reeceeboy
4 жыл бұрын
I'd say a good measurement would be the furthest object that is spherical, orbits the sun stabally, has gravity and originated from our sun
@badhombre4683
4 жыл бұрын
Another mind bending, humbling, and enlightening experience Astrum. Your videos are as informative as they are thrilling. I salute your work and nominate you for the narrator of the next Cosmos series.
@jackthelad9933
4 жыл бұрын
Well said!
@danieldan136
4 жыл бұрын
I am not sure you can call them solar systems as there is only one Solar System with the Sun in the center. I think it would be more appropriate to call them Star Systems.
@astrumspace
4 жыл бұрын
Star Systems can also mean multiple stars that orbit each other. I wanted to avoid the confusion there
@andracoz
4 жыл бұрын
Astronomers have discovered more than 2,500 other stars with planets orbiting them in our galaxy. That's just how many we've found so far.. We have barely scratched the surface as to whats actually out there. True wisdom is knowing you know nothing - Socrates.
@DragonsAreHungry
4 жыл бұрын
@@andracoz "The more I know, the more I realize how little I know." Don't remember who said that...
@clown-eating-hippo
4 жыл бұрын
You are correct. Solar system. Sol. Our sun. It's THE solar system.
@cian.14yearsago15
4 жыл бұрын
8:07 fascinating to think you can. Never escape the gravity of someyhimg even if it’s on the opposite end of the universe
@creativedesignation7880
4 жыл бұрын
That is technically true. While the effect will become too small to notice at one point and usually even more quickly be outdone by other gravitational influences, there is no point at which the gravitational field of any object is zero. (The reason in formula is that the gravitational force between two masses is calculated by multiplying the gravitational constant with the product of the two masses involved, divided by their distance and you can never get a value of zero by dividing.)
@PouncingAnt
4 жыл бұрын
@@creativedesignation7880 Yeah, but space is expanding, so you only need to place the two objects far enough apart that the expansion of space counteracts the attraction of gravity
@maryann2628
2 жыл бұрын
@@PouncingAnt but before the distance is too far any little movement even a dust touches it the velocity allow it to escape it if that was the sun gravity 1,000 light years without other objects besides the orbiting it and the expansion of the universe then the orbital velocity is only 3.7 meters per second and the escape velocity is 5.8 meters per second so if you run or push it or throw it if its small at almost 2 or more meters per second then it escaped the sun gravity and you could almost escape it by jumping 1.5 meters per second.
@rufusapplebee1428
4 жыл бұрын
Live Forever and Prosper, Astrum.
@timmcguire6436
4 жыл бұрын
Your videos are getting better all the time! I learn with each one. Thank You
@tomhools1605
4 жыл бұрын
So it will take Voyager 100k years to pass Oort cloud, but it would take only 10 years for a space probe to pass Oort cloud if it was powered on atom bombs.
@MrVipinb
4 жыл бұрын
That background music that starts at around 0:55, is Eternity by Stellardrone!!! Gosh, I love that track!
@omnivore2220
3 жыл бұрын
Yeah see, that beautiful thumbnail image of the giant planet as seem from the edge of a placid water? It's ridiculous. Unless that moon is tidally locked to the giant planet, AND has an extremely circular orbit, the tides would be catastrophic.
@Lyendith
4 жыл бұрын
I always wondered how objects so far away from the Sun could still be suject to its gravity, but once you understand that there's no such thing as a "maximum distance" past which gravity stops to operate, it becomes a bit more clear… basically, the biggest fish around always wins?
@Daedhart
4 жыл бұрын
Weeeelll...this detail of the video is technically wrong. Or at best, misleading. In a static universe, its true that gravity is infinite, but our universe isnt static; its expanding. Gravity waves, and thus the effect of gravity, move at the speed of light. That means parts of the universe moving away from us faster than light due to space expanding dont exert gravity on us. Everything outside of the observable universe is outside of our gravity, so the border of gravity is the observable universe. Basically, if you cant theoretically see it, your gravity doesnt affect it. Interestingly, this also means that the gravity of an object doesnt affect us instantly, only when its light reaches us. So Earth is being pulled via gravity not to where the Sun is right now, but to the point in space it was 8 minutes ago.
@astrumspace
4 жыл бұрын
@@Daedhart I can see why you think it was misleading, but in the infinity example, I did specify that only those two objects existed in this hypothetical universe. That means everything that could power its expansion also doesn't exist in this example. I was just trying to keep it simple.
@Daedhart
4 жыл бұрын
@@astrumspace I totally understand. Very impressed you responded and love your videos! Keep it up!
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