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one bright second (lemmy.nz)

submitted 10 months ago by fossilesque@mander.xyz to c/science_memes@mander.xyz

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[–] theunknownmuncher@lemmy.world 12 points 10 months ago (3 children)

Black holes aren't "dark"...

[–] yakko@feddit.uk 27 points 10 months ago (1 children)

These ones will be quite dim

[–] theunknownmuncher@lemmy.world 6 points 10 months ago (1 children)

Yeah, I suppose after a billion billion billion or so years, it probably would be

[–] yakko@feddit.uk 7 points 10 months ago (1 children)

The light will eventually tire out and turn into radio waves or smth, I'm not a physicist

[–] Holytimes@sh.itjust.works 3 points 10 months ago (1 children)

To al elder God that sees higher bands of the electromagnetic spectrum it would see be a very bright place!

[–] yakko@feddit.uk 1 points 10 months ago

Any self respecting elder god would be playing billiards with the black holes. Fire up the new big bang, ye tatterdemalion layabouts!

[–] Infernal_pizza@lemmy.dbzer0.com 2 points 10 months ago (1 children)

Is that because of the accretion disk?

[–] mkwt@lemmy.world 9 points 10 months ago (1 children)

And Hawking radiation. Hawking radiation is pretty "dark" for solar-mass scale black holes and up, but it can become relatively very intense for smaller holes.

For the holes we observe astronomically, the things we can see are the accretion disks and the orbits of stars around the black hole.

[–] frezik@lemmy.blahaj.zone 6 points 10 months ago (1 children)

But that happens because of matter falling into them, right? When they've already swallowed everything, there's not going to be accretion disks.

[–] bjoern_tantau@swg-empire.de 3 points 10 months ago (1 children)

Yeah, though eventually they should all evaporate one after another with a last huge tiny energy burst due to hawking radiation. But that will take a looooooooong ass time. And we still don't know (might never know) if hawking radiation is real.

[–] MotoAsh@piefed.social 2 points 10 months ago* (last edited 10 months ago)

They said the same thing about the curvature of spacetime 100 years ago. Then it was proven like three years later.