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Why Black Holes Could Delete The Universe – The Information Paradox

Kurzgesagt – In a Nutshell | August 12, 2025



Black holes are scary things. But they also might reveal the true nature of the universe to us.

This video was realised with the help of Dr. Alessandro Sfondrini and it was funded by SNSF under Agora Grant n. 171622 and through the NCCR SwissMAP: The Mathematics of Physics.

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How Black Holes Could Delete The Universe – The Information Paradox

Written by Kurzgesagt – In a Nutshell

Comments

This post currently has 44 comments.

  1. @kurzgesagt

    August 12, 2025 at 10:14 am

    You want to learn more about space? Check out our space products on the kurzgesagt shop – all designed with love and produced with care.
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  2. @SRM-425

    August 12, 2025 at 10:14 am

    1:56….For those wondering— A black hole🌚 with the mass of our sun☀️ would take approximately 10^67 years to evaporate completely via Hawking radiation.😶

  3. @Qwertyuiop-l5c4o

    August 12, 2025 at 10:14 am

    Why does Hawking Radiation happen?
    4:43 Why? Anyone have any examples?
    Wait, how do we know the information would be lost?
    8:27 and 9:27 How our understanding of physics change if it’s a ‘might be’? What if we aren’t? Problem solved!
    Also 9:27 How does that change anything even if it’s true?

  4. @Ichibuns

    August 12, 2025 at 10:14 am

    To our understanding, information cannot be deleted. However, it's essentially deleted if you can't access it and or gets changed to something unrecognizable. Not much of a difference other than a philosophical one.

  5. @caveman5446

    August 12, 2025 at 10:14 am

    "Mini Ant Roof" was not an anagram I was expecting out of "information" but by golly you all never cease to impress me with the silly animations and interestinf information.

  6. @commontater1785

    August 12, 2025 at 10:14 am

    Two serious flaws in the way this videos explains things:
    1) Information it NOT what MAKES two different arrangements of atoms different objects. That's like saying that the photographs of two houses are what MAKE them different shapes. It's ass backwards.

    2) You need to motivate WHY we should expect information to be preserved. The deletion of information is a common everyday experience for all of us, so you really need to spend a long time explaining why we should expect the universe to leave a record of every past state of itself.

    This video is a perfect example of how making the issue "simpler" makes it impossible to actually understand.

  7. @Leliana619-3

    August 12, 2025 at 10:14 am

    Let’s create a black hole take so many laundry baskets. It falls up in the entire room. The room is filled squeeze one extra shock in with lots of pressure boom a black hole. Do not do this.😨

  8. @003-michael9

    August 12, 2025 at 10:14 am

    Information is just another dimension like time. The black holes are more or less a worm hole for humans, but as for information and you could say when they’re formed the information it’s transported elsewhere where it may not be destroyed. After all I don’t know.

  9. @colem631

    August 12, 2025 at 10:14 am

    It's comforting to think of our little corner of the galaxy as being so small and insignificant that hopefully the gravity of the larger objects and clusters will pull rouge black holes towards them and away from us.

    When I was a kid, I was really worried about rogue black holes. I would actively worry about them in elementary school (I loved the Science Channel) and by the time I was about 13 I had come to terms with my existential dread about the universe and the fragility of the Earth.

    The more I've learned about how insignificant we are, the more it's helped me get over my fears of the truly massive threats out there, so maybe a little existential dread every once in a while isn't such a bad thing.

    It's all about perspective.

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