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submitted 10 months ago by L4s@lemmy.world to c/technology@lemmy.world

Black holes keep 'burping up' stars they destroyed years earlier, and astronomers don't know why::Years after ripping stars to shreds, 24 black holes suddenly flared up with radio waves in inexplicable 'burping' bouts. Half of all star-killing black holes may experience the same.

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[-] cunning_bolt@lemmy.world 66 points 10 months ago

It sounds like the matter isn't coming out of the black hole, but actually the accretion disc that is in the process of being sucked into the black hole so we aren't breaking the event horizon threshold as title suggests

[-] Kerfuffle@sh.itjust.works 33 points 10 months ago

we aren’t breaking the event horizon threshold as title suggests

It wouldn't be pop-sci if it didn't have a misleading clickbait title!

[-] cheese_greater@lemmy.world 5 points 10 months ago

It couldn't be the actual black hole past the event horizon, right? It would logically seem that inescapable precludes burping or farting matter

[-] throwittothesea@lemmynsfw.com 10 points 10 months ago* (last edited 10 months ago)

scientist quoted as saying black holes were "shitting [their] guts out" and "blowing megachunks all over the proverbial tile floor of space"

[-] Transcendant@lemmy.world 3 points 10 months ago

This is my assumption. Clearly the accretion disk isn't the point of no return, or maybe stuff on the inside = past point of no return, stuff on the outside can get flung off?

[-] NightAuthor@lemmy.world 6 points 10 months ago

If I remember correctly the point of no return is called the Event Horizon.

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[-] cyberpunk007@lemmy.ca 32 points 10 months ago

Ok so black holes are just teleporters to other dimensions right?!

[-] Nouveau_Burnswick@lemmy.world 35 points 10 months ago

It's a one way teleporter to a single dimension, because you're entire mass will be a single imperceptible point.

[-] WhatAmLemmy@lemmy.world 12 points 10 months ago

But it's not a single point though, because blackholes with a different mass have different sizes, so it's more like a "maximum density" that can exist in this universe...

[-] Nouveau_Burnswick@lemmy.world 9 points 10 months ago

It's an oversimplification, but something with the mass of say, a human, will be crushed into a very very very very tiny space. A much smaller space than 0.1mm radius, which would hold Earth's moon's mass of 7.342×10^22 kg.

[-] WhatAmLemmy@lemmy.world 1 points 9 months ago

Yes... And something with the mass of the universe will crush into a significantly larger (yet comparatively tiny) volume of space... Thus, a black hole is basically the maximum density we can currently comprehend and theorize.

[-] ElderWendigo@sh.itjust.works 3 points 10 months ago

Size and density have non-standard definitions in this context.

[-] Tropic420@discuss.tchncs.de 2 points 10 months ago

As far as i know the Mass of the black Hole is concentrated in the Center (singularity). But it is surouded by its schwarzschild Radius. Anything that enters it cant escape.

[-] Lemmylaugh@lemmy.ml 1 points 10 months ago

Well, unless it burps

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[-] NocturnalMorning@lemmy.world 10 points 10 months ago

That's what the current understanding of physics says. But given that there are singularities that come out of the math, all that really means is we don't actually know what happens inside a black hole.

[-] Carnelian@lemmy.world 3 points 10 months ago

Kind of like the lump that forms in my chest when I get a phone call

[-] BlinkerFluid@lemmy.one 1 points 10 months ago

I equate it to a can of spray cheese. Small hole, puffy cheese.

[-] Nouveau_Burnswick@lemmy.world 4 points 10 months ago

I thought you were making this up, but apparently there actually is "cheese" that comes in a spray bottle.

What the wiki article does not explain, is why.

[-] Wtfrud@lemmy.world 7 points 10 months ago

Some people put it on crackers but when I was growing up we always put it in the bugles chips.

That is also why I always thought people who pretended to have witch nails by wearing bugles were weird, I was always like “why would you put cheese all over your fingers…”.

[-] Nouveau_Burnswick@lemmy.world 9 points 10 months ago

Maybe it's just because I'm still shocked at the existence of this product, but I don't see why either of those use cases need cheese in a can instead of just cheese.

[-] sundrei@lemmy.sdf.org 4 points 10 months ago

Partly it's convenience, but I think the main reason is you can get cheddar and bacon flavored spray cheese.

[-] Sylver@lemmy.world 2 points 10 months ago* (last edited 10 months ago)

Real cheese takes a couple seconds to scoop or even slice. The can is as simple as flexing your finger, and an endless stream of “cheese” comes out!

[-] PsychedSy@sh.itjust.works 4 points 10 months ago

Dogs are big fans as well.

[-] mx_smith@lemmy.world 2 points 10 months ago

They used to take them on dive trips and squirt it in the water and the fish would eat it. Some diver masters would play jokes and squirt it in other divers hair and the fish would start eating at their hair.

[-] BlinkerFluid@lemmy.one 3 points 10 months ago

EASY CHEEEEESE!

There's a place in Philly that uses it as the cheese for their steak subs.

It's wrong, but they still do for some reason.

[-] MasterBlaster@lemmynsfw.com 3 points 10 months ago

Wrong to whom? It’s the same thing as Cheez Whiz, which is the right cheese.

[-] Coreidan@lemmy.world 2 points 10 months ago
[-] Transcendant@lemmy.world 2 points 10 months ago

Cheese flavoured foam extrusion

[-] Dkarma@lemmy.world 2 points 10 months ago

Bruh ez cheese on a Ritz or club cracker. If ur brain doesn't go nuts for that u don't have a single taste bud.

[-] Nouveau_Burnswick@lemmy.world 1 points 10 months ago

I don't know what it tastes like, but it looks like American cheese.

Is the flavour different from say, cheese whiz, a plastic cheese slice, or an unspiced queso?

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[-] Furbag@lemmy.world 7 points 10 months ago

It'll teleport you from the third dimension to the first dimension.

[-] agitatedpotato@lemmy.dbzer0.com 32 points 10 months ago

No indication that any of the returning matter ever made it beyond the event horizon but how wild would it be if matter can come back from that somehow, would shatter current understand of the phenom.

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[-] Nesse@reddthat.com 22 points 10 months ago

So would it be appropriate to say they are passing gas?

[-] FartsWithAnAccent@lemmy.world 4 points 10 months ago
[-] CmdrShepard@lemmy.one 9 points 10 months ago

Based on that username, I feel like you'd be a subject matter expert.

[-] sirico@feddit.uk 10 points 10 months ago

What if we're currently travelling through one right now and we forgot to turn the oven off

[-] OneCardboardBox@lemmy.sdf.org 7 points 10 months ago

I wonder if it could be caused by other celestial bodies captured in the black hole's orbit. Some new mass approaches the accretion disk and the gravitational pull slingshots some of the disk's matter out.

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[-] Kolanaki@yiffit.net 5 points 9 months ago

Maybe black holes sometimes momentarily change into white holes? 🤔

[-] fox2263@lemmy.world 1 points 9 months ago
[-] Cascio@lemmy.world 4 points 9 months ago

The Cat: So, what is it?

Kryten: I've never seen one before - no one has - but I'm guessing it's a white hole.

Rimmer: A white hole?

Kryten: Every action has an equal and opposite reaction. A black hole sucks time and matter out of the Universe; a white hole returns it.

Lister: So, that thing's spewing time...

Lister: [donning his fur-lined hat] ... back into the Universe?

Kryten: Precisely. That's why we're experiencing these curious time phenomena on board.

The Cat: So, what is it?

Kryten: I've never seen one before - no one has - but I'm guessing it's a white hole.

Rimmer: A white hole?

Kryten: Every action has an equal and opposite reaction. A black hole sucks time and matter out of the Universe; a white hole returns it.

Lister: [minus the hat] So, that thing's spewing time...

Lister: [donning his fur-lined hat, again] ... back into the Universe?

Kryten: Precisely. That's why we're experiencing these curious time phenomena on board.

Lister: What time phenomena?

Kryten: Like just then, when time repeated itself.

The Cat: So, what is it?

[Kryten, Rimmer, and Lister stare at Cat]

The Cat: Only joking.

-Red Dwarf

[-] fox2263@lemmy.world 2 points 9 months ago

So what is it?

[-] Kolanaki@yiffit.net 3 points 9 months ago* (last edited 9 months ago)

A white hole is a theorized antithesis to a black hole. While a black hole sucks matter in and destroys it, a white hole seemingly creates new matter and sprays it into the universe.

Afaik, we haven't actually observed one before. It's just a mathematical theory. But black holes used to be nothing more than theory, too.

Edit: I haven't seen Red Dwarf in so long, I didn't realize you were referencing it. 🤣

[-] fox2263@lemmy.world 1 points 9 months ago

So that thing is spewing time back in to the universe?

[-] HurlingDurling@lemm.ee 4 points 10 months ago

Galactic indigestion

[-] Sanctus@lemmy.world 1 points 10 months ago

Like whole stars or?

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this post was submitted on 05 Sep 2023
304 points (96.6% liked)

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