The Largest Objects in the Universe

[@southwestphilomath807]

The network of Simon’s channels is the biggest thing in the universe

[@Talisguy]

It's somehow bigger than the entire internet. ... Nobody's sure how.

[@felwinter5528]

If he had a website with all his KZbin channel on it and a description of each of them, it would be larger than all the harry potter books combined

[@PatrickStarfishman]

This gets a well earned....lol

[@InquisMalleus]

And it continues to expand faster than the speed of light.

[@thelegalliam]

Some say it is made of pure dark matter.

[@JackBWatkins]

Simon is like the Dark Matter of You Tube, he makes up 96% everything worth watching on the platform.

[@craigh5236]

Simon is real unlike dark matter. Dark matter is just an excuse to explain why their calculations was wrong. Instead of saying like a normal person 'hey my math doesn't add up maybe I should check it again' they went and said 'hmmm is my math wrong or the universe? The universe'

[@shinji391]

Atomic Shrimp.

[@slcpunk2740]

That's dark matter AND dark energy

[@slcpunk2740]

​@@craigh5236 umm no, dark matter is an observable phenomenon which we can see affecting clouds of dust and gas, maybe you should do some more research ... Dark energy however, that could be magic or fairies for all we know at the moment

[@JackBWatkins]

@@craigh5236 in college I tried to blame the universe when they said my math was wrong. Since I was an undergrad and a non-math major the prof blamed me. I still suffer the effects of that emotional scar, but back then nobody gave a 💩. I am so glad that education now takes into account student’s feeling’s. Today we are discovering new genders faster than anytime in history. Back then individual rights stopped at the others persons nose, now individual rights stop at the other persons feelings no matter where in the world they may be and offenders are publicly shamed or put in jail. It is a great time to be alive.

[@johncarpenter440]

The image at 11:29 isn't a void. It is the nebula Barnard 68, which is a dust cloud that blocks the light of stars behind it. It is often accidentally used in place of Bootes Void, which is one of the least dense areas of its size in the universe.

[@XraynPR]

Some quite big mistakes in this video ..

[@fumanpoo4725]

Booty void?

[@richardwalker6004]

Interesting you are the 1st person I ever heard mention it. No one have ever gave an explanation like that. I can see how that would more sense than a void . However , that is a extremely large dust cloud. So wouldn’t that be one of the biggest objects in the universe

[@richardwalker6004]

@@johncarpenter440 thank you for the information. I def will check it out . Cheers .

[@bigshorty4855]

True, saw this in another vid.

[@heshamelshami3117]

Hi Simon, I don't find that you make mistakes often on your shows and I very much appreciate your content. THe Milky Way is approximately 100,000 light-years in diameter and not 50,000 like you mentioned. You also stated that Andromeda is about 100,000 light-years across from end-to-end when in fact it's 220k light-years in diameter. Keep doing the great work you're doing and cheers from Canada!

[@chiefchimp2789]

He pronounces Uranus the way a 13 year old does too, so I don't think this guys words hold that much weight.

[@Kae-Lexi]

@@chiefchimp2789 Get that stick out of Uranus.

[@tikki723]

@@chiefchimp2789 this is what you get when someone who isnt qualified to talk about these subjects gets on youtube

[@Oli-Johnson]

​@@chiefchimp2789that's like saying no one should listen to Americans because they pronounce so many things wrong.

[@Xanderbelle]

ALso didnt mention Stephenson 218 or Ton 618

[@JeffMoody]

I think you meant 6 hours instead of 6 minutes to travel the circumference of Canis Majoris at light speed. Light doesn’t even make it a portion of the radius in that time... 8 minutes from the sun to earth, and 43 minutes to Jupiter.

[@savagesarethebest7251]

With all that update lag it is really amazing how an object can be coherent. It fascinates me to no end that the universe works the way it does with this slow speed of light.

[@tyl9371]

@@savagesarethebest7251 Time is relative to the observer - like how flies perceive time at 1/4 the speed we do, and since information can only travel at the speed of light a photon(light) would not "experience" time or anything whatsoever. We're just not operating at the timescale required to observe the true majesty of the universe, sadly.

[@DannyG683]

What impressive things our Lord has made with His hands!

[@Sarutulf_Lertimud]

@@DannyG683 Who, Voldemort?

[@DannyG683]

@@Sarutulf_Lertimud God!

[@emyrwebster9458]

Jupiter's orbital path is 32AU. To circumnavigate Canis Majoris at the speed of light would take over four hours, not six minutes!

[@FurrSquee]

While you're closer to the correct result, it is actually closer to 28 hours to circumnavigate VY Canis Majoris. Reasoning being that it takes roughly 8 minutes and 20-something seconds for light to reach Earth from the Sun, and said distance is 1AU. Jupiter is, as you mentioned, out around 32AU. So, using the circumference formula (2r*pi), you get 32*2*3.12 = 200.96. Multiply this by 8.34 (some rounding necessary), to get 1676.01 minutes. Divide this by 60 to get the hours, which come out to just under 28.

[@FieldBoy111]

I was wondering how the fuck people know the moon is 3cm farther away than last year

[@user-semenar]

I was thinking the same: "wait, isn't it 8 minutes to reach Earth from Sun at the speed of light? How could the orbit of Jupiter be shorter than that distance?"

[@jeromehorwitz2460]

The Apollo crew placed mirrors on the surface of the Moon that lasers can be aimed at to give very precise measurements .

[@acejet6797]

I think you mistook radius for diameter. The Milky Way and Andromeda are both twice as wide as you state (7:30). If you had said "from the center to the edge" instead of "from one side to the other" you would have been correct.

[@aleksandar6056]

I actually didn't realize this when I wrote my comment. Still, 1 acceptable mistake among so much more, if you can find my comment

[@carlroy]

Nice catch!

[@antoanthony3400]

But that would Andromeda 200,000 ly, isn't it like 150k ly?

[@acejet6797]

@@antoanthony3400 True. My comment was more about mistaking radius for diameter. It was stated that "Our galaxy is roughly 52,000 light years from one side to the other." This is closer to a clean factor-of-two mistake than the mistake about Andromeda. Andromeda is neither 100,000 nor 200,000 light years across, but the mistake of confusing diameter and radius is the same. I'm trying to give an otherwise good video some leeway.

[@hopefullynotbutprobably6643]

Well this video got quite a few things wrong. 1. The moon is not moving away from Earth because of Jupiter. It’s because the rotational velocity of the Earth is transferring some of the energy to the moon causing it to move further away over time. 2. VY Canis Majoris probably didn’t explode yet. It’s not expected to explode for another 100,000 years. It’s 4000 light years away. This means there’s only like a 4% chance is already went supernova. 3. Alcyoneus Galaxy’s large size has nothing to do with the super massive black hole in it’s center. It’s entirely because of all the dark matter scattered throughout it. 4. The empty space picture you showed is Barnard 68. You were talking about Boötes Void. They’re entirely different things.

[@MrCmon113]

5. The Milky Way and Andromeda are twice the size stated. 6. Dark Energy isn't a kind of Dark Matter.

[@CHIIIEEEEEEEEFFFFSSS]

Fun, informative video Simon, but Dark Energy and Dark matter are two separate things. Dark energy is not a subcategory of dark matter like you suggested.

[@norijagar]

Shut up

[@esaedvik]

Always a few errors in these videos. If not factual, then pronunciations...Still, makes people think and some even fact-check them.

[@davesilkstone6912]

Correction. Jupiter is not pulling our Moon away, the reason that the moon is moving away from the Earth is due to the spin of the Earth moving the tidal bulge of the oceans slightly forward of the direct line between the Moon and the Earth, thus pulling the Moon forward and increasing it's orbital velocity, which in turn increases it's orbital radius.

[@Rawrbarianxoxo]

Even if some other people are writing all the scripts for these channels editing and everything else Simon really does put in a colossal amount of time into alls the videos he’s doing pretty much every day

[@Sideprojects]

Nah bro, I just read the prompter and then go have a couple of beers.

[@SargBjornson]

@@Sideprojects Well earned beers, mate

[@isaacward5162]

​@@Sideprojects giga chad

[@shahan484]

@@Sideprojects we watch for you Simon

[@richardvandertulip4061]

​@@Sideprojects You've clearly earned them after your CC and ItS reads.

[@GrouchierBear]

4:13 This doesn't sound right. Six minutes is less than the time it takes for light to travel from the sun to the earth. If the star's radius extends to jupiter's (around five astronomical units), the circumference should be big enough that something moving at the speed of light should take over four hours to circle it. So either VY Canis Majoris has a smaller radius than the video suggests, or someone got the circumference wrong.

[@francois-xavierdavid5670]

I actually thought the same and reached the same figure as you.

[@nagualdesign]

It has a larger radius than the video states; 2,069 solar radii. So it's circumference would be 8 light-hours, 23 light-minutes by my reckoning.

[@forbiddenera]

4 hours 30min .. Jupiter takes 43min for light to hit so if its that diameter then multiply by pi (edir: corrected for radius vs diameter)

[@nrocirpactar5697]

@@forbiddenera 2*pi because 43 min is time for the radius.

[@forbiddenera]

@@nrocirpactar5697 you're totally right! My bad!!

[@joepairitz6817]

Great video, one glowing revision -Circumnavigating Jupiters orbit at the speed of light would take you more than four hours. A star larger than Jupiter’s orbit would take even longer, much longer than six minutes.

[@eppsunc]

I thought he meant 6 hours but correct! 43 minutes for light to reach Jupiter from the sun so no way 6 minutes around it

[@forbiddenera]

Yep.. 4 hours 30min at least

[@d4mdcykey]

Cosmology is easily the most fascinating, mindblowing, and thought-provoking subject, just can't get enough of these discoveries.

[@Ezekiel903]

never forget, that everything we see is long history!! we only see how it was .....years ago!!

[@XraynPR]

I'd recommend the SEA channel, great quality and better researched than this video

[@BlackThunderRC]

I’m shocked at the amount of errors / out of date information on this video Simon. I’d honestly say it would best to makes this video again. Normally the content you pump out is bang on. Stephenson 2 is the largest currently known red giant. Our galaxy is between 80,000-100,000 light years across. Andromeda is nearly double that. It would take light around 6 hours to circus navigate VY Canis Majoris. They are just the larger errors in this but are many more smaller ones. Just look at the comments.

[@bobbyb42]

Yeah a lot of the information and numbers are totally wrong

[@patrickjohnsen4199]

Not trying to come off as an asshole. But what are some of the errors?

[@forbiddenera]

@4:14 time should be at least 2 hours 15min.. and he's acting impressed by 6min which is less than the time it takes ligjt to hit earth

[@nealheidekat5726]

"Red Giant" is specifically a term for a phase in certain solar mass life cycles that have already achieved fusion. At best, Jupiter could be considered a "brown giant", a sizeable mass that never ignited. Unsubscribing from all Simon channels, it is barely researched click-bait. Perhaps if they weren't just gagging for likes and did some actual homework, they could have a positive, educational impact on the world.

[@eroraf8637]

So. Much. Pain. He seriously needs better fact-checking.

[@TannCo2]

The largest object in the universe is the collection of KZbin channels that Simon has created.

[@David5thUltra]

I’m sure the Milky Way is larger than 52,000 light years accross, more like 100,000. Still great video 😊

[@petercozzaglio6070]

Right. And the Andromeda galaxy is closer to 225,000 light years across.

[@Michael75579]

@@petercozzaglio6070 And Jupiter is 1300 times the volume of Earth, not 130.

[@petercozzaglio6070]

@@Michael75579 And if Jupiters gravitational pull is strong enough to pull our moon away from Earth a few centimeters a year, then why isn’t it strong enough to pull Mars out of its orbit? Inquiring minds want to know.

[@renaissanceredneck73]

It takes 8 minutes for light to reach 🌎 from the 🌞, so if the star at 4:12 is as big as the orbit of Jupiter I think it would take more than 6 minutes for light to go around it's circumference.... I hope some body is getting flogged down in the basement for these egregious errors!! My perception of you as infallible is now ruined Simon, we'll spare you the flogging...this time. Bahaha....

[@Michael75579]

@@petercozzaglio6070 Because it's not Jupiter's gravity that's causing the moon to recede; it's conservation of angular momentum. Tides are causing the Earth's rotation to slow, and so to conserve angular momentum the moon has to orbit further away. Jupiter's gravity does affect the solar system - it's largely responsible for cyclic variations in the exact shape of the Earth's orbit for example - but it doesn't affect the moon the way the video claimed.

[@patriciaposthumus6684]

Simon when are you going to start a channel that deals with stuff pertaining to everything about the universe? I would love that. Some of my favorite programs that you've done recently have to do with space.

[@Sideprojects]

I would like to do more space, but they never seem to perform super well, so I get a bit discouraged about it. I think at some point I'll just do a space related channel so that the videos can just be for people who love space stuff.

[@sendthis9480]

@@Sideprojects Do you know how NASA organizes for a big event? They planet.

[@jhtrq1465]

Hopefully nver, because he don't know shit on this subject and make a poor work of researching good source on the matter. Better watch PBS than licking his boots.

[@jayyydizzzle]

Geographics occasionally does a Spaceographics episode, there is some backlog to watch

[@oskarskalski2982]

There are plenty more channels that deals with universe and do it far better: Pbs space time, dr becky, sci show space.

[@bobingabout]

7:30 Error. 52 thousand lightyears RADIUS, one side to the other is Diameter, it's more like 105 thousand lightyears from one side to the other.

[@dustinplatt6882]

Props to Jupiter for taking some hits for us here on Earth. Appreciate you, bro.

[@mikey92362]

But stop stealing our moon. You have one already, and we're still using ours. Quit being a douche, Jupiter.

[@Knervik]

@6:08 Neutron star and black hole formations both involve supernovae. White dwarf formation is the least harmful form of star death, but even that is pretty turbulent to any planets in that system.

[@Knervik]

From 12:34 through the end of the video should be taken with a grain of salt, or several.

[@XraynPR]

From 00:00 onwards ...

[@pdxmusl1510]

Nice video! One comment.. on that large galaxy. Theres an estimate for central black holes mass given the mass of a galaxy. That's the basis of the thought of the galaxy having a really large blackhole. Its a common misconception that we are gravitationally bound to a central blackhole. While some things most certainly would be... most objects in a galaxy are not bound to the cental black hole. Its in the center because heavier objects tend to migrate to the center of mass. For reference... the gravity you experience from Sagittarius is so stupid small... you will experience something insane like 1 million times more gravity just sitting 3inches away from your significant other. Its so insignificant its not worth considering unless your basically taking the most sensitive gravitational measurement that has ever been taken. If you were at a standstill and Sagittarius was the only thing pulling on you. It would take about 25 thousand years to be going at blistering speed of 1mph. If we were in fact gravitationally bound to our black hole... we would orbit so stupid slow it would take 1000s of times longer than the universe has existed to make a single orbit. We travel faster than that. Fun thought... an ant orbiting around the earth at basically satalite distances pulls harder on earth than Sagittarius a. An ant... Which also suggests ignoring atmosphere... theres a point where if the ant is close enough the ant could steal earth from Sagittarius and the earth would "orbit" (using that term extremely loosly.. thats not accurate) the ant instead of Sagittarius providing its only earth, an ant, and Sagittarius. Probably not really but basically sneezing while having your face pointed up could push earth away from Sagittarius a. Or at least would over come its gravity. Again. Ignoring atmosphere. Thats basically how insignificant Sagittarius is gravitationally to us. We are not orbiting at all. Black holes do not keep galaxies together. If they did... they'd be stupid small. There influence in today's universe is too insignificant.

[@NoahVenesile]

"cos watch time's important for me" that's fair, and i appreciate you making this explanation as enjoyable as possible for us Way to go, Simon Whistler

[@Carvetii]

Oh Simon Stephenson 2-18 (St2-18) is a red supergiant located in the constellation Scutum. Also catalogued as Stephenson 2-DFK 1 and RSGC2-18, it is the current record holder for the largest star known, with a size 2,150 times that of the Sun. The star is located at a distance of 18,900 light years from Earth. It is a member of the open cluster Stephenson 2. Whoever is doing the fact checking needs to do better

[@jedaaa]

Another of several errors I've noticed less than halfway through the vid

[@TheRealRollinator]

@@jedaaa u are not right but also not wrong. the problem with these Hypergiants is that they are often variable in size. they are contracting and therefore changing their size. also they are often remeasuered. one time scuty seemed bigger than stephenson, next time not. its also not easy to measure a star at this distance. all in all u can say that these 3 are the current biggest stars we know at the moment.

[@Carvetii]

@@TheRealRollinator I understand what your saying and and that is true but Stephenson 2-18 is so much bigger that UY Scuti its a non contest variable or not its a young star still growing where as UY Scuti and Canis Majoris are both in terms of hypergiants coming to the end of there life. When you read up on any of these stars the mind just boggles with the numbers involved.

[@EAWanderer]

How and why is this a side project? I absolutely love this! 😅 👏👏👏👏

[@nickcoupe2964]

"We have no idea" - The most exciting words in science.

[@marklewus5468]

Great video, Simon, but your writer mixed up radius and diameter. The size of the Milky Way from “one end to the other” is its diameter, which is 104,000 light years; its radius is 52,000. Same with Andromeda at 220,000 light years diameter.

[@forbiddenera]

Just like he said that a star whos diameter puts it's edge at Jupiter takes 6 minutes to orbit at light speed when that's about how long it takes light to hit earth..so at least double times pi, I'd guess or more (can't really remember how far Jupiter is out) edit: Google sez 43min for light to hit Jupiter so 4 hr 30min or so

[@jmanj3917]

7:32 52k light years is the radius (center to edge) of the Milky Way galaxy, not its diameter ("side to side"). Goddamn, Fact Boy

[@jimmybisk]

Thanks for a fascinating look at the biggest objects. Those two large stars are an insane size! I wouldn't like to be near them when they blow that's for sure! Simon's KZbin monopoly, however, may one day give them some competition!

[@tigercap100]

Some day we Christians will have time and ability to investigate God's vast artistry

[@ridethecurve55]

I know of some peoples' egos that dwarf all things in this video. I found it's best to not orbit near them.

[@RichieKrol]

Bot

[@THE-BUNKEN-DRUM]

Look up "Stephenson star 2-18" 🌟

[@jimmybisk]

@@THE-BUNKEN-DRUM Thanks, that will certainly give me some bedtime reading!

[@dustinplatt6882]

I always liked to think that the Great Void was a super advanced civilization that was so advanced that they have the ability to harness energy from entire galaxies and have just massive Dyson Spheres or something similar which is why we can't detect any light from that area.

[@MrCmon113]

I'm pretty sure physicists would have thought of that, after all they're actively looking for Dyson spheres. Maybe we'd have to get more infrared radiation from the void or sth. Even a super advanced civilization still has to get rid of waste heat and can't contradict thermodynamics.

[@dustinplatt6882]

I guarantee that that $10 I swear I had in my pocket the other day is outside the observable universe. Thanks, science.

[@martinstallard2742]

0:33 the red giant 3:24 the dog dethroned 6:48 the cosmic giant 9:21 your going to need a bigger telescope 11:19 fear of the dark

[@I.amthatrealJuan]

4:11 That sounds off. The speed of light takes 8 minutes to reach the Earth straight from the sun. Surely circumnavigating VY Canis Majoris would take much longer.

[@E1eMenta1]

He meant 6 hours

[@itcangetbetter]

The most prevalent thing is far and away from being the largest thing. Didn't expect the video to faceplant so hard at the end

[@antonkovalenko364]

Yeah, and UY Scuti is not the biggest star on record (by diameter)anymore, either. It's now, and has been for a while, Sephenson 2-18.

[@patelk464]

The numbers for the dog dethroned section does not add up. It states that the diameter is 1400 times that of the sun but at 04:18 states it would take 6 minutes to go around at the speed of light. It actually would take 6 hours.

[@nevertruelydead]

It'd be really cool if we, one day, found out that that gigantic void was ground zero for the big bang.

[@DarkZodiacZZ]

Maybe it is a massive cloud of Von Neumann machines expanding to the rest of the universe. 👿

[@-AxisA-]

Stop thinking of it as an actual explosion. It's more like hyper expansion of space itself.

[@nevertruelydead]

Yes. From a singularity. Ground zero. Could have been an explosion from a previous universe contracting to a critical state and "exploding" back out, or "hyper expanding," you might say. There are many theories out there. Science is ever-changing, and to tell the truth, we still can't say what exactly happened before, during, or after the Big Bang with 100% certainty. We can only speculate and theorize and make the necessary assumptions based on the scientific evidence that we are capable of revealing with our current technologies.

[@-AxisA-]

@@nevertruelydead Yea I started to think after reading your comment that could we pinpoint a point in the current universe where the big-bang started? I doubt it, because space and time are interconnected, so I think "ground-zero" of this hyper-expansion is around 13.8 billion years ago.

[@nevertruelydead]

Except the universe didn't expand out in a straight line or one certain direction. At first it was thought that it expanded out in all directions pretty evenly for the most part, but more and more, we are finding that is not exactly the case. It's 13.9 billion years old as far as we know. The 'observable' universe as we call it, but - like I stated before - we are discovering, more and more, celestial bodies that seem to predate the universe given our current estimations, pointing to the fact that the universe may, or may not, be older than we think it is.

[@SmoothAsL]

Love Simon’s videos, but this one makes it obvious that it’s volume over substance. Getting the circumference of VY Scuti (likely 6 minutes at light speed) and the diameter of the Milky Way (105k LY vs 52k LY) obviously wrong is so alarming that I wonder whether any of this stuff is being proofread.

[@usmc24thmeu36]

I am surprised by all the mistakes. I have seen his channel make so many.

[@tonytaskforce3465]

The fact that 96% of everything is something we can't experience kind of puts the kybosh on the idea that we're what it's all about. Bummer that.

[@shanematthews1985]

OP's mom should be on this list

[@xstunners188]

What is OP?

[@shanematthews1985]

@@xstunners188 original poster, as in the person who made the post, having to explain the joke makes it less funny

[@refilwemokoene2922]

​@@shanematthews1985 It was never funny mate

[@bradlevantis913]

Imagine being Fritz Zwisky. Came up with a theory that was ignored for your lifetime only to have it become one of the most important quests after you die.

[@fischer0762]

The picture you show of “the great void” is actually a nebula called Barnard 68 which does not allow light from the stars behind it through.

[@wowplayer160]

That's the problem with mass produced content. At some point you are gonna do things because it's close enough to get the idea across but not be always 100% accurate.

[@antonkovalenko364]

I made this exact comment myself.

[@Bacon_and_Busch]

Aiming for 100% accuracy needn't be the goal. Hell, science is always making claims of absolute facts that are proven false or inexact... but it'd be nice if "stuff you find on Google" wasn't the primary research tool. If science communicators at least get people to look for correct sources it'll be alright, probably.

[@MrCmon113]

Bruh. I noticed like 4 errors myself, but this I didn't know about. Is anything in the video correct?

[@pozzowon]

4:20 light takes 8 minutes to reach Earth, 43 minutes to reach Jupiter. I don't think an object that big would have a circumference 6 light minutes long

[@E1eMenta1]

It would take 6 hours. I think he accidentally used the wrong unit of time

[@forbiddenera]

43min equates to 4hr 30m

[@Zeppathy]

I would like to know how many hours of work Simon's team have put into all these channels.

[@thelegalliam]

A very surprising amount looking at serial killers only to intermittently get breaks by googling what the biggest sun is.

[@forbiddenera]

Like 10 seconds for this one judging by the fact there's at least 10 mistakes/errors/completely wrong numbers

[@siheard4206]

Yeah, that's what I thought. And by going on how good his usual uploads are, I started to question whether I had my facts correct. Like Stephenson is the biggest star known, not Scuti. And I even think that Stevenson has been eclipsed now. And the Milky Way and Andromeda are double what he said. MWay is 100,000 ly across, not 50,000. I hate being 'that guy' but information like this has to be correct otherwise false info gets told to people, who in turn then relay that false info to others. So it needs jumping on straight away. Sorry.

[@ianyoung1106]

All the hours. There are none left.

[@cheesetoasty5139]

Not enough hours to be bothered to fact check.

[@matd675]

I dont know who did the writing & research on this video, but theres a lot of incorrect information. 5:50 this is wrong. UY Scuti is nowhere near as big as you say. At 1.19 billion km radius, it doesn't even reach to Saturn's orbit, let alone Uranus Neptune & Pluto. And the even larger star Stephenson 2-18 barely reaches past Saturn. 8:27 The Supermassive black hole at the center of Alcyoneus is 90 times the mass of Sagittarius A*, not 500k. 500k times SG A* would be over 2 trillion solar masses, 20 times the mass of the actual most massive SMBH (Phoenix A* at 100billion solar masses)

[@rjolly87]

There's a "Your mama" joke in there somewhere, there has to be!

[@BIGJATPSU]

Simon, "How can something that large possibly stay together?" Answer: 👇🏼👇🏼 "Need something put back together? Hi! I'm Phil Swift, and this is Flex Tape!" 🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣🤣

[@Matthew...1979]

Simon, you said our galaxy is roughly 52,000 light years across... Most if not all other estimates I've heard or read have said it's 100,000 lyrs across. Was that just a mistake on your part? If not, that's a pretty big discrepancy.

[@jarxor]

What is the reason of the flashing dots for example on 0:44? They are disturbing for the eye on videos. Is it some kind of a way to avoid copyright with pictures?

[@Morgyborgyblob]

Alcyoneus isn't *that* big, or at least, the host galaxy isn't - the giant size quoted here is actually the radio lobes on either side of it.

[@forbiddenera]

So many mistakes

[@zylaaeria2627]

Just a minor correction at the end, Dark Matter & Dark Energy are two completely different things. Dark Matter makes up around 26%, Dark Energy around 70% & the remaining baryonic matter (basically, all the shit we can see) around 4%. Not trying to be nitpicky, but in this subject matter, it helps to understand how to differentiate the two which is a common mistake I see people make when discussing this topic. It leads to a lot of misconceptions as a result.

[@Unfrendly14]

Way too many mistakes,Stehenson 2-18 is the bigest star,Alcyoneus is not the bigest galaxy,for it is a radio galaxy and they are measured diferendly, IC1101 is still the bigest galaxy,size of the Milky way and Andromeda also wrong.Would sugest research again and redo the video.

[@caseyford3368]

There are probably many smaller or tiny galaxies, planets and beings also. Billions or trillions of lives lost in a small splat on the windshield. We need to have finer detection equipment for those we can't see easily.

[@thedayidied]

I am soon to be an astronomer, so it always excites me to see information about astronomical phenomena being discussed. Lovely video as always. One thing though: you said it's approximately 52,000 ly from one side of our galaxy to the other - that actually is its approximate radius from the galactic core to its outer stars. Its diameter is approximately 105,000 ly across. Andromeda is the same issue - its diameter is 220,000 ly. Otherwise though, awesome video!

[@astrophysicistguy]

So just a point of clarification, the Andromeda galaxy will not collide with the MW for another 7.2 billion years not 100 million as he stated …

[@quix66hiya22]

I love videos about the cosmos and size of objects in it! Thank you!

[@rayzor1380]

I have my own playlist with just simons videos from all his channels . Very informative content. And he puts a lot of time and effort in to them. I know he doesn't write most of them but still hes the face and voice of the channel.

[@Dirt1061]

This would have been really cool if Stargate Universe could have explored these.

[@alyssinwilliams4570]

This was pretty spectacular, one of my fave sideproject videos of recent memory

[@XraynPR]

If this is the average quality I better not watch another video of his

[@rogueninja185]

"A star that failed to ignite"... These fantasy stories passing as science are really entertaining

[@bodegacoast]

For anyone wondering, the name of the largest galaxy (6:47) is Alcyoneus. Simon's pronunciation was not very clear.

[@Catpain_Tailspin]

Never heard of Jupiter referred to as a red giant. That’s a term reserved for large main sequence and other hypergiant stars.

[@blackoutdk6769]

i like how you just come straight to the point "and i'd like you to watch this video to the end"

[@woobilicious.]

1/9th of the observable universe is bad math, 1/9 would be a one dimensional volume, the bad but "correct" estimate would be 10^3/90^3 or approx 1/27, assuming two cubes of volume, in all likelihood you'd probably want the equation for a sphere on the bottom, and something similar to the shape of the great wall on the top. Also Dark matter and Dark energy are distinct, and it's incorrect to claim 96% of the universe is dark matter.

[@Killergold88]

Poor Stepheson 2-18 Ton 618 would have been a neat one to mention too.. or is it Phoenix A now?

[@YaePublishing]

Want Simon as a Bond Villain vs Henry Cavill's 007.

[@albachera90albachera51]

Dude whatever you speak about, please never change.

[@andljoy]

When you look at the size of them massive stars and how much energy they will/have released just shows you how insignificant we are. We are a tiny insignificant spec on an insignificant spec orbiting an insignificant star in an insignificant galaxy.

[@wombatperson5431]

I remember that they showed us this video at church group showing that basically our star was one of the tiny ones and that things just got bigger, and bigger, and bigger. Gave 8 year old me a crisis lol.

[@Dewarz2550]

Hey Simon! You should make a channel dedicated to space videos. I would love it!

[@nagualdesign]

(1:22) _"...Capable of fitting the entire Earth inside it over 130 times."_ Jupiter is almost 11 times the diameter of the Earth, so its volume is almost 11³ times the Earth. That's *over 1,300* times, not 130.

[@MusicalRaichu]

there are mistakes in this video. it's not made by scientists but by people collecting data from searching the internet, so you're getting it third or fourth hand.

[@nagualdesign]

​@@MusicalRaichu It has all the hallmarks of a talking head reading a script written by someone with no previous knowledge of the subject. It always puzzles me why people who are obviously unaware of how to pronounce certain words just hazard a guess instead of googling it before filming an 'educational' video.

[@MusicalRaichu]

@@nagualdesign They're goal is to earn a living doing something that entertains more than informs. I feel this has its place in the scheme of things, so long as you know to check what they say if it's going to impact your decisions. Simon's British. They don't care how they butcher "foreign" names ... and it's a fun running gag in the videos. (Greeks are no better when it comes to non-Greeks so I'm not one to talk.)

[@forbiddenera]

A chatgpt written script would be more accurate at this point

[@nagualdesign]

@@MusicalRaichu I'm British and if I don't know how to pronounce an unfamiliar word I look it up.

[@Captain.AmericaV1]

*Am i the only one who gets British Supervillain vibes from his voice?* *The casual dark humour and body language, instil fear into anyone who dares to cross him!! 😱😱*

[@doclewis8927]

Love that Simon's not shy about saying watch time is important because he like "money" as he says.

[@qchronod]

Small corrections: @4:18 - should be 6 hours not minutes. @5:50 - it's only 30% wider than the first star (~1.2e9 km), so it would almost reach Saturn (~1.4e9 km) no where close to reaching past Neptune (4.4e9 km) or Pluto (5.9e9 km), @7:40 - Andromeda isn't going to start colliding for 4 billion years (and take several billion years to complete)

[@jmanj3917]

13:16 Ok, wth..? There is no evidence that dark matter and dark energy are the same thing, or that one is part of the other. Your grasp of the universe is astonishing.

[@forbiddenera]

You mean his writer? He just reads w/no comprehension

[@brianhaidle3474]

As a MTG player, when I see KZbin videos not about magic use MTG art is always interesting

[@BrandonSLedford]

1:22 More than 1,300 earths can fit inside Jupiter .. Not 130

[@cw8jwh]

Sir, In considering star size, What about Stephenson 2-18b or R136a1 ?

[@EAWanderer]

05:07 - UY Scuti 🌟 BIGGEST so far DISCOVERED

[@bobbybawbager]

Simon!! This was a truly awesome episode!! 👌

[@glendownton]

Simon, constructive criticism here: the flicker overlay that your editor puts over some (but only some!) video clips is really distracting, particularly when looking at things like detailed astro imagery. Not sure its intended purpose, but IMO that effect detracts from what you're trying to explain, rather than improving it. Cheers.

[@forbiddenera]

Oh man if you think thats annoying you should see his science of science fiction channel.. I can't even fkn watch it the editing is so bad and overdone! It's like meme worthy, you have to see it! (Which also sucks because some topics there seem interesting but the editing kills it plus it's not just visual vomit it's sound too so can't even pretend its a podcast)

[@JohnGardnerAlhadis]

Agreed. It's gotta go.

[@jayyydizzzle]

Megaprojects should do an episode on the low frequency array (LOFAR) !

[@emom358]

Simon, how much of the information in your videos do you retain? Is there one channel you love the best

[@PlanetXMysteries-pj9nm]

The person who okayed this narration deserves to have their eulogy delivered by the same computer voice, in a church full of robots that can't cry.

[@brianupsher6675]

Great video but one correction, dark matter and dark energy are different things, dark means unknown. Dark matter is believed to be matter and particles that have mass, and with that gravity. Dark energy comes from the vacuum energy of space itself and causes a repulsive force called expansion. Dark energy also increases as space expands.

[@vladtherussian9594]

UYScuti was dethroned by Stephenson 2-18 enigmatic red supergiant star recently which is also located in the same constellation of Scutum.

[@poorman-trending]

Jupiter is not a red giant. Red giant is a type of star.

[@carlroy]

It almost look like the galactic cluster are running away from YOU, Simon! Nice video anyhow!

[@chilibeer3912]

I love the space videos because they are grounding. Sometimes it’s not enough to consider how insignificant my problems are on a global scale. Sometimes you have to think bigger…

[@nunya___]

5:30 There some kind of loud music playing. Why?

[@blindbrailleable]

Oh Simon, you've never disappointed me. I've been bored, but never disappointed. I have kids.

[@aussiedudeofthesoutheast789]

Dark matter has been discovered to be the radiated decay of Simon's dark humour

[@aronmiller7648]

I love space it fascinates me, but... It is kinda depressing because we will never see any of this stuff we can't ever reach it.

[@cytherians]

It appears like Simon Whistler's knowledge network is rapidly expanding... can he identify his Big Bang? And there's certainly a lot of enlightenment to be found. I'm hooked!

[@nofrackingzone7479]

Marvelous gesticulation with such tiny hands! Who can ask for more! Cheers!

[@carpebratschem3894]

Astrophysics student here. Thanks for this VNV (Very Nice Video). But can we agree on calling Jupiter a gas giant instead of a „red giant“ as the latter term is used to describe a type of star rather than a planet. Also the bok globule Barnard 68 is not an empty void but rather a dark nebula, aka the birthplace of stars. It only seems black and empty when observed in the visible part of light. In the infrared it is not at all dark and by no means empty.

[@XraynPR]

What do you think of the general research in this video?

[@728709jay]

Stephenson 2-18 is now known as being one of the largest, if not the current largest star ever discovered, surpassing other stars like VY Canis Majoris and UY Scuti. Stephenson 2-18 has a radius of 2,150 solar radii, being larger than almost the entire orbit of Saturn (1,940 - 2,169 solar radii).

[@Manaphy0882]

4:30 where is the material from?

[@cleverusername9369]

The biggest thing in the universe is Jeff Goldblum's overwhelming charisma.

[@gardenshed6043]

I remember having a really stupid theory when I first learned the calculation for relativistic mass in physics in high school. That given the equations we have, the closer something gets to the speed of light, the greater it’s relativistic mass. And by those calculations if your speed equals the speed of light, your mass is undefined or infinite. And if you exceed the speed of light, well we don’t know what would happen because it would make the mass imaginary. But perhaps that’s what dark matter is. Matter that has exceeded the speed of light and reached that threshold at which physics changes once more. Like a boiling point.