The Age of Quasars Is Coming to an End

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Supermassive black holes and their distribution in the universe.
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Tags: black hole, ton 618, astrum, astrumspace, nasa

  1. 獅子猫又NiffirgkcaJ

    2:38 where can I find a full video of this?

  2. Arkangel Gaming

    I love science and one of my favourite things is the question of how old things are. What if we were wrong? What if we are less than 1b years old? What if we have mistaken something with the speed of light? I love the idea that we dont actually know. Shows us how much more and how much further we have to go to even begin to try to understand the universe.

    I’m allowed to ask this question because all we “know” is based upon theories and while they are logical theories… they are theories based on their predecessors theories based on their predecessors theories and thus the world could be the nerdiest game of Chinese whispers ever.

    It’s fun to speculate and as I said, I love science and I love the questions that dare question the reality we know.

  3. byurBUDdy

    Kind of poetic that Einstein presented ‘c’ as the variable to represent the light that we see.

  4. BigTimber

    Sometimes when I stargaze and contemplate the universe, I feel a sense of dangling out, hanging from my feet peering into the vastness of space all around me.

  5. Mike C

    Black holes have found their end as well as big bang. Long live plasma physics.

  6. Eric Taylor

    At this time black holes can’t shed mass unless they are already very small. Stellar mass black holes and larger have a Hawking radiation temperature much lower than the current temperature of the MBR. This means that even black holes that have nothing at all near by still gain mass from the MBR.
    So it will be a long time before these black holes can lose mass.

  7. Volker Greimann

    “Black holes are the densest objects in existence” – clearly the author has not met Qanon followers!

  8. Magnemmar

    Matter is not “pouring into them at an incredible rate”. It *was* pouring into them at an incredible rate.

  9. Anger Manager

    Love this channel and appreciate all the amazing videos.

    But this video’s vocabulary can confuse beginners.

    Example: 1:49
    “This means it can be at most 2.8 billion years old.”
    No, not at all. It can be 13.8 billion years old if it is still out there(hypothetically).

    A clearer statement would be:
    “This means the image we see is from when it was at most 2.8 billion years old.”

    Or at least:
    “This means it could have only been 2.8 billion years old when the light was transmitted.”

  10. Ryan Dalziel

    Only 200 million solar masses…

    I had to pause there for a moment.

  11. Ireallylikeeggs

    Yo I thought I had some great chemistry with this one quasar but then it just stopped responding. Now I see why.

  12. kehvan

    Quasars: Where are they now?

    _After a stint at stardom, Quasars developed consumption and collapsed into a black hole of dispair._

  13. oliver

    does anyone else just get freaked out daily by gravity? theres no reason for it its creepy

  14. C D

    I find it weird that the coldest anything can be is -273.15 C, yet going other way, things can reach millions of degrees

  15. Arioch IV

    The age of quasars came to an end billions of years ago.

  16. Hexa Decimal

    So how did anything including quasars form if there was a big bang, how did the universe avoid collapsing into a black hole, it must have been denser than anything in the universe today.

  17. J can do

    Have you ever tried to go further than the end of space

  18. Spencer Gallucci

    Could quasars be part of galaxy formation? If they only exist in the earliest known times of the universe we can observe they may be a stage of galactic birth? Honest questions I’d ask in a lecture..

  19. Spencer Gallucci

    With time dilation and light speed something ive always wondered is: is it possible that a black hole we discover today may be a remnant of a quasar we can still observe now? Say the quasar was moving towards us, and we are observing the light from it but at some point that light is exstiguished yet it still is moving toward us but we couldnt detect it, is it possible that our observation of two objects in the universe could be of the same object at different times? Or does the general law of speed of light break this thought? How fast can a black hole travel through space?

  20. r12esh

    Sometimes I wonder what would happen to a living organism as big as a galaxy. would it pump blood faster than the speed of life?

  21. r12esh

    Darkest objects in the universe: Blackholes
    Brightest Objects in the universe: Blackholes

  22. AvalancheOfFire

    I love your videos, this one included. But being busy and not being able to watch them immediately, it’s confusing when you change the title upwards of five times or more. I understand the Youtube algorithm and how it suggests new titles for you based upon previous interactions and whatnot, but for viewers that hurts a lot. I thought this one video was several, and that does not paint you favorably to me. And you ARE favorable to me! Please don’t succumb to pressure any further and alienate your supporters even moreso.

  23. sandydenny lives

    I do love a Quasar more than 500 million light years away. And I’m not mean in wishing dear old Ton a couple of billion more if it desires. I’m very generous in wishing these two darlin’s all the space they need and more for their farm’s. Ever expand away from us you beauties.

  24. Martin Anderson

    The age of quasar may be coming to an end, though when Andromeda collides in 4-5 billion years, the galaxy may shine bright, one last time.

  25. Robert Gotschall

    Makes sense and adds a whole new aspect to it all, thanks

  26. CarthagoMike

    Don’t worry,
    the Age of Man will come to an end long before the Age of Quasars enters its final moments.

  27. cheese chisel

    if all of the particles in the observable universe fell into one giant black hole

    what would the rest of spacetime be like?

  28. Barask Paras

    Very interesting. Thanks.

  29. brookswift

    wasn’t this video far longer originally? i just refreshed my page and it’s only 8 minutes now instead of nearly an hour… title changed too

  30. Lez Lezman

    Your video title had me worried for a moment…I thought that all the quasars were going to be turned off next week like the old Iridium satellites!

  31. Paul Birsan

    Space is the utmost terrifying place to be in.

  32. Md. Monjurul Alam Rana

    “Quasba” ende eden erde und devoy envoy savoy unt de hahnemann es en de kleinsmann ans bist liefen en qualitat fidelitas fur de hummel bisonda. muchas felicidades en el mündial…! m.m.a.rana

  33. James G

    Amazing! Been watching your channel for almost it whole existence. Deffenitly one of my favorites. Sparked tons of curiosity of how scientists can even know so much. Thanks for all the good content!

  34. Sarojini Chaudhury

    When we watch these videos, we feel that our earth is not even a dot in the universe ;but when we return to our earth , we get bewildered by the vastness of Mother Earth !

  35. Adarsh

    If the largest of the supermassive blackholes are also the farthest. And what we see of them is actually what they were billions of years old.
    Then could they be very very dim and less harmful now in the real time? Also is there a way possible to know the current nature of very distant objects of the universe?

  36. Real Courte

    We exist cuse of no big things happening lately in our small lucky galaxy :) Yeah, the dinosaurs meteorite event was a boon of course!

  37. sourav m

    Amazing video..!! Thank You Astrum for share..!! I have a question, if you kindly response. What is the difference between a Quasar and a Black Hole ?-

  38. ꧁ ꦿ ꧖꧐꧂

    I also like to ask a question, “do you want a quasar next to your planet?”

  39. Eagle Eye

    My first thought was that they might not be around now, so we can’t see them close to us

  40. Chris Hannivan

    The animation at 6:50 was gnarly 🤘🏻

  41. 12 Fingers

    we don’t have any quasars because we can’t afford one, we aren’t in wealthy part of the Laniakea Supercluster

  42. Martial Bachoffner

    You forgot something: I’m Alex McCologan and you are watching Astrum. I’m utterly disappointed 😎

  43. Tater Avila

    “You are looking at galaxies that are billions of years old..”
    “But even the Event Horizon Telescope takes AGES to image a black hole.”
    It took a few hours 🤣

  44. Johan E

    I used your Curiosity code this morning; thank you for the discount!

  45. Evster GK

    How come I never hear scientist acknowledge that when we see other planetary systems in other galaxies, that these were images in the distant past? If our planets have moved around different distances through out time, wouldn’t it also make sense that those we see in other worlds, planets that were not in a goldilock zone, may have moved as well? I have not heard this talked about.

  46. Dl

    How can quasars come out of a black hole when not even light can escape the event horizon?

  47. BWX

    “Why Aren’t There Quasars Close to Us?” Another reason might be that if we were anywhere near one, life couldn’t exist on this planet.

  48. Bryon Feliksa

    Dude, the black hole thumb nail was the best one in my option. Anyways, keep up the great work.

  49. dmt85

    This guy sounds like he’s smiling whilst talking

  50. Andromeda

    I want to see the day when humans will travel intergalactic

  51. Priyanshu

    Great explaintion

  52. Peter Gregory

    When will they know what an accretion disc tastes like?

  53. hausy

    I love your videos! Thanks for making them!

  54. Butler Crow

    I’m a relatively intelligent guy, but even after years of listening/reading about the cosmos, it still leaves me feeling stupid.


    Moral of the story is: Never forget to take in account the fact about the Universe being in constant expansion…

  56. Captain Cruise

    The original thumbnail was way more interesting imo.

  57. ck3908

    Really? the age of galaxy = universe age minus how long it takes light from galaxy to reach us? I thought it was way more complex than this.

  58. ArloC

    that was the smoothest transition to a sponsorship i have ever seen

  59. Alklazaris

    Considering how little we have actually property measured gravity in the far greater amount of time we have theorized gravity isn’t instantaneous.

    It would explain why black holes that are much farther away could be so massive. You are detecting it’s active forces in the present.

    I realize the implications so forgive me if I’m missing a vital piece of information. From what I could gather we have never tested if gravity is instantaneous or restricted like light. The gravitational waves from recent high mass mergers didn’t specify a second observation post that could perform such a task.

  60. Robin

    The music choice is on point as always!

  61. Paridy

    I give this video a 10/10. I smaaashed that like button.

  62. Mark Devaney

    The big bang is only an horizon on an infinite curve from our perspective… It’s pretty straight forward! ;P

  63. Rafael Barros

    Great video as always! When are the rest of the Apollo episodes coming?

  64. Eremon1

    TON 618 is the second largest super blackhole we’ve discovered. That’s pretty insane that it’s brighter than it’s own surrounding galaxy.

  65. I will

    I’ve immersed myself so much into all things astronomy lately that the more I learn the more it’s starting to feel as though we live in a fictitious universe. Things are so ridiculous it’s as though it’s being conjured up by some grandma telling a bedtime story.

  66. Tim Seeburger

    Quasars and Blazars are some of the coolest things in the universe!

  67. babyrazor

    Question: A some point during a stars collapse won’t the mass of the event horizon exceed that of the mass remaining inside the star thereby pulling it to the event horizon?

  68. Daniel Hale

    Very cool. Sometimes when you have a surprising result from data, you need to rethink how you’re interpreting your data. Accounting for differences in how it was collected or where it’s from can make all the difference.
    Thank you for this excellent video!

  69. BWX

    Love these vids in 4K! Looks amazing on a 55″ 4K TV.

  70. Bryce

    Great video! I’m fascinated by Quasars!

  71. Dizzle

    I don’t know about black holes being the most dense objects, I met this one person that was so dense not even logic could escape.

  72. glamdring0007

    Excellent as usual !

  73. Kimmie Dawn

    One of my favorite days of the week is when I get a notification that Astrum just gave us a new video! 👍🏻💯 Wished there was 1 everyday!! 🤞🏻🌎🌞🌚🌝✨🪐🌙

  74. Guillermo Varela

    I love these videos so much I wish I could have a new one every night

  75. D2FlashMan

    I love the space engine music you used. I would recommend you check out space engine if you have a decent computer. It’s great for making videos

  76. Rook

    Hey, I remember you made a community post about how we felt about you changing titles/thumbnails, and I have a solution. You should just include a section in the description of the original title so we can search them by memory

  77. theberg988

    ‘Neath the black the sky looks dead, call my name through the cream and I’ll hear you scream again~

  78. Braeburn Hilliard

    Our universe = yep, I knew it’d be a great place to stay for awhile!

  79. Fannie Mason

    I feel smarter already 💕😊.

  80. Pizarro

    perfect timing for a drop

  81. Robert Kerr

    This is one of the few channels where you can preemptively like a video. Always great content. 👍

  82. FatGoose

    Dude, this was an INCREDIBLE video! Thank you so much!

  83. Max Vaessen

    Thanks for your great video’s! I do think the background music was kinda distracting (starting at 4:14). Never noticed that with your other vids. Anyway, keep up your great work!

  84. ZeeeBoss

    Wish ill be alive when we have flying cars

  85. Lamii Kromah

    wonderful video, thanks for sharing learned so much

  86. Particulator

    Your videos should be on CuriosityStream.

  87. Naughty _Bear_79

    Thanks Alex for your videos they are very very informative and helpful.. I would like to take the opportunity to thank you and look forward to more of your amazing videos. I think I speak on behalf of all members of your wonderful channel. A friend 👍
    Ps do you have any Scottish roots in your family I was wondering. You don’t need to answer that personal question just my curiosity gets the better of me. Love your channel 💢💫💥🕳️💣🖖

  88. Aqibul Islam

    I cant stop loving your videos

  89. Astrum

    Do you have a space related question for the next Astrum Answers?
    Curiosity Stream, only $14.99 for a whole year if you use this link: and use the code ‘Astrum’ at checkout.

  90. Juan Antonio Salas Martin

    Very interesting information, without doubt black holes 💢 are one of the most amazing objects that we could see in the universe 🌌, i hope That the new telescopes can help us to study and learn more about it.
    Thanks for the information Alex greetings and all the Best for everybody in this beginning of week 👍👍🇲🇽🇪🇸🇮🇪🍀

  91. Heather Bourkovski

    I’ve always been curious about space, thank you so much for uploading these videos!!

  92. Ruben Heutink

    Great video. I wasn’t aware of this.

  93. MRH BKJK

    Great 😍

  94. Astrum Español

    Great video! ❤️❤️❤️

  95. adro gal

    Thanks for the subtitles!

  96. Garrett Kelley

    Very informative video! Black holes are so cool

  97. Barney

    Because they haven’t had the time to reflect on themselves.

    aha aha ahahaha

  98. Gravitacioni manevar

    Awesome video as always! Im also making videos about space and astronomy!

  99. WizzardOfPaws

    WOO HOO! Astrum is back!

  100. Matthias

    Perfect video just before going to sleep.😂 (🇩🇪)

Comments are closed.