this post was submitted on 27 Feb 2025
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Science Memes

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[–] [email protected] 92 points 4 days ago (6 children)

If you can't grow your own black holes, store-bought is fine.

[–] [email protected] 9 points 3 days ago

i prefer wild-generated blackholes, sources from a star.

[–] [email protected] 13 points 4 days ago

I really prefer wild Atlantic black holes.

[–] [email protected] 10 points 3 days ago (1 children)

It's not that hard, all you needs a little Scots turf builder black hole edition.

[–] [email protected] 12 points 3 days ago (5 children)

I keep hearing commericals for them advertising to kill clover. Always annoys me. If clover grows in your yard, your yard likely needs the nutrients (nitrogen likely). Also, it helps bee populations, which helps well... Life.

Clover was never a weed until weed killer came around out and killed it with everything else in the grass. So they started an ad campaign that told people it was a weed and convinced people that white flowers in your yard look bad.

So now everytime I hear an advertisement that mentions killing clover I remind myself not to buy products by the brand who says it. Also, clover honey is delicious.

[–] [email protected] 6 points 3 days ago

I love clover! So much softer than grass. I like Moss more, looks the nicest!

Clover is better at retaining moisture too. So yards with lots of clover tend to stay green longer in dry periods, which also helps life. Keep things cooler too.

Grass is really just awful ground cover.

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[–] [email protected] 174 points 4 days ago (4 children)

Not everyone can cough up the cash for some free-range organic black hole.

[–] [email protected] 39 points 4 days ago* (last edited 4 days ago) (1 children)

If I read this post without any context I would think "this guy is too poor to hire a black prostitute" and not " this guy doesn't have a particle accelerator capable of making a miniature black hole"

[–] [email protected] 17 points 4 days ago

And this is why you should not skip your physics classes.

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[–] [email protected] 120 points 4 days ago (1 children)

Don't buy lab-grown black holes, it's not quite the same if it's not mined by a child in South Africa. And it should cost at least three times your salary, otherwise your spouse will be ashamed.

[–] [email protected] 28 points 4 days ago (1 children)

It's only a black hole if it comes from the black region of space. Otherwise it's just a sparkling dense mass.

[–] [email protected] 7 points 3 days ago

A not-sparkling stellar mass

[–] [email protected] 109 points 4 days ago* (last edited 4 days ago) (5 children)

Maybe not the actual referenced article, but its close:

https://www.livescience.com/black-hole-analog-confirms-hawking.html

While the study was testing for a specific kind of energy radiated by an artificial micro black hole...

What's being glossed over is the broad concept and implications of Hawking Radiation.

https://en.m.wikipedia.org/wiki/Hawking_radiation

Simply put, a tiny micro black hole will evaporate itself out of existence quite rapidly.

There is no danger of such a thing growing and consuming everything like an expanding katamari damacy ball.

[–] [email protected] 45 points 4 days ago (2 children)

There is no danger of such a thing growing and consuming everything like an expanding katamari damacy ball.

Damn.

[–] [email protected] 17 points 4 days ago (1 children)

Thought we had an out.. Nope we got to tackle fascism and climate change the hard way

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[–] [email protected] 16 points 4 days ago

Yeah, until we get a micro black hole that's piloted by a competent Katamari player, then it's over!

[–] [email protected] 10 points 4 days ago (6 children)

What is the minimum size until it will grow faster than it evaporates? And can we make one if we try really hard?

[–] [email protected] 26 points 3 days ago* (last edited 3 days ago) (2 children)

https://www.vttoth.com/CMS/physics-notes/311-hawking-radiation-calculator

Indeed, any black hole with a mass greater than about 0.75% of the Earth's mass is colder than the cosmic background, and thus its mass increases for now. As the universe expands and cools, however, eventually the black hole may begin to lose mass-energy through Hawking radiation.

Size isn't actually the main factor, mass is.

A teaspoon of what neutron stars are made of weighs as much as Mt. Everest.

Its the mass thats important, and apparently the threshold for an actually stable black hole is 0.75% the mass of Earth, 4.48 x 10²² kg .... or, roughly 2/3 the mass of the Moon.

(The Moon's mass is roughly 1/81th that of Earth's. It ks far, far less dense.)

So... basically 0 chance in our natural life times we'll figure out how to convert the Moon into a blackhole, lol.

EDIT:

There... could theoretically be a wandering black hole of aporoximately that mass... but even if it entered our solar system, chances are it would just get thrown out, deflected by Jupiter and the Sun, and it would only maybe eat some ice in the Kuiper belt, dust and maybe very small asteroids in the asteroid belt if it somehow made it past Jupiter.

Black holes don't have infinite gravitational vaccuum power that extends infinitely, because they do not have infinite mass.

if they did, the occurence of one would instantly eat the entire universe at the speed of gravity, which is the speed of light.

They have as much gravity as their mass says they should, and they obey the same orbital dynamics as every other massive celestial body.

[–] [email protected] 17 points 3 days ago

We're fucked if a black hole hits us, but we're fucked if anything with the same mass hits us

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[–] [email protected] 48 points 4 days ago (1 children)

pokes black hole C’mon, devour Earth.

[–] [email protected] 26 points 3 days ago (2 children)

It's wild that there is so much space between atoms (and inside them, between the elctron orbitals and the nucleus), and black holes are so incredibly dense, that a small black hole can fall all the way through the Earth and not hit enough matter to gain appreciable mass.

[–] [email protected] 3 points 1 day ago

Also it would be radiating prodigiously, and would need to eat fast to survive

[–] Uranium_Green 1 points 2 days ago

You got any links to explain this in some more detail?

Because this just causes my brain to jam when trying to comprehend...

Like what diameter of black hole are we talking?

And what is the critical mass of the black whole before it starts to cascade and grow?

[–] [email protected] 84 points 4 days ago (1 children)

Cabin in the Woods

Who had 'Lab grown Black Hole?'

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[–] [email protected] 65 points 4 days ago (13 children)

Us developing an actual black hole would be one of the best things humanity has ever done. It would kinda be like inventing techniques to make fire.

We could throw shit around the orbit of the black hole and get fusion. Not just deuterium fusion! Even proton proton fusion. Our energy needs would be solved practically forever.

We could conduct a crazy amount of experiments on the black hole, see quantum effects of gravity and whatnot.

Maybe we could build one of em Alcubierre drives that don't need exotic matter?

[–] [email protected] 49 points 4 days ago (5 children)

Can you imagine what a "black hole fusion accident" could look like?

[–] [email protected] 89 points 4 days ago (3 children)

No, of course not. The accident eats all the light I'd need for that.

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[–] [email protected] 22 points 4 days ago (16 children)

Pretty sure any black hole we create would evaporate from hawking radiation before it could be used for anything outside of research.

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[–] [email protected] 17 points 4 days ago (1 children)

One of the first things we will use it for is to make a new weapon of mass destruction. Mark my words.

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[–] [email protected] 18 points 4 days ago (9 children)

Yeah.

Then somebody drops it and it just falls down to the planet's core and eats our fucking world.

[–] [email protected] 23 points 4 days ago (1 children)

The way we are going, its for the best

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[–] [email protected] 11 points 4 days ago (1 children)

Tiny black holes are the kind of thing that physically cant exist for more than a few like picosecods or something ridiculous like that before evaporating into radio waves.

[–] [email protected] 11 points 4 days ago (1 children)

We kinda don't know for sure though. The tinier the black hole gets, the more it enters into the realm of quantum mechanics. We have no clue how quantum gravity works, so ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯

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[–] [email protected] 6 points 3 days ago

Opps, singuloose!

[–] [email protected] 4 points 3 days ago

I was a black hole analog built out of Bose-Einstein-Condensate.
Considering they used sound instead of light, wouldn't that make it a silent hole?

[–] [email protected] 18 points 4 days ago (1 children)

Did they drop "analogue" or "simulated" from the title?

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[–] [email protected] 13 points 4 days ago (13 children)

There isn't enough mass in our solar system to sustain a black hole, less on a scientists' research budget.

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[–] [email protected] 15 points 4 days ago (2 children)

I remember seeing Event Horizon.

This won’t end well.

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