That explains a lot

Not everyone can cough up the cash for some free-range organic black hole.
- 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"
  
  And this is why you should not skip your physics classes.
- Do we have brandnewsentence on lemmy?
  
  !brandnewsentence@lemmy.world

If you can't grow your own black holes, store-bought is fine.
- I really prefer wild Atlantic black holes.
- i prefer wild-generated blackholes, sources from a star.
  
  The problem is, nobody can find out if they actually are
- It's not that hard, all you needs a little Scots turf builder black hole edition.
  
  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.
- i prefer mines, organic, pasture and gard raised, not with artificial ingredients. must use actual STAR, none of the "collider-made particles"
- Well, yeah.
  If you wish to build a black hole from scratch, you must first build the universe.
- But it's not an authentic black hole unless it's mined with slave labour!

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.
- It's only a black hole if it comes from the black region of space. Otherwise it's just a sparkling dense mass.
  
  A not-sparkling stellar mass

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.
- There is no danger of such a thing growing and consuming everything like an expanding katamari damacy ball.
  Damn.
  
  Thought we had an out.. Nope we got to tackle fascism and climate change the hard way
  
  Disappointed beyond measure. :(
- Yeah, until we get a micro black hole that's piloted by a competent Katamari player, then it's over!
- What is the minimum size until it will grow faster than it evaporates? And can we make one if we try really hard?
  
  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, 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.
  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.
  
  If you do, you may win a Nobel prize for it
  
  I know a little bit but I'm not an expert.
  My understanding is hawking radiation will produce a rate of mass evaporating that's fairly consistent over galactic time scales, so you just need to make sure the black hole is big enough to "suck" more mass in via gravitational attraction per given time period than evaporates through hawking radiation.
- We know this because after testing it the micro blackhole did in fact fizzle out. /joke
- If only it could suck up a few specific people before evaporating itself out of existence.

pokes black hole C’mon, devour Earth.
- 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.
  
  Also it would be radiating prodigiously, and would need to eat fast to survive
  
  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?

Who had 'Lab grown Black Hole?'
- They didn't make a black hole, they just did the supersonic Rubidium gas trick

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?
- Can you imagine what a "black hole fusion accident" could look like?
  
  No, of course not. The accident eats all the light I'd need for that.
  
  It would be almost impossible to do something like that without enough fuel though.
- Pretty sure any black hole we create would evaporate from hawking radiation before it could be used for anything outside of research.
  
  If we could make Jupiter a black hole, would that be stable enough to not radiate away? Other big body we have access to is the sun and I feel we would suffer more side effects of turning that into a hole compared to Jupiter
- One of the first things we will use it for is to make a new weapon of mass destruction. Mark my words.
  
  It would make whoever controls it effectively God, so yeah - probably.
- Yeah.
  Then somebody drops it and it just falls down to the planet's core and eats our fucking world.
  
  The way we are going, its for the best
  
  That's not really how black holes work. They evaporate really quickly when they're small enough. And if they're small, they don't have much gravity either.
  
  Ok, so even if it "falls down", it will probably evaporate way before it even reaches the center. Even if it doesn't, it will be take A VERY LONG TIME for it to get big enough to eat the planet out or whatever.
  It is very VERY difficult to make something fall inside a black hole. Mostly, stuff just zooms right past it at incredible speeds.
  The earth would be consumed by the sun way before it gets consumed by a black hole.
  
  We'd have a quasi-planet.
  
  That's not how that works. It's not a DnD sphere of annihilation, it's an infinitely dense point of matter.
- 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.
  
  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⁠)⁠_⁠/⁠¯
- Unfortunately an Alcubierre drive dumps a shitload of high energy radiation in the direction of travel when it stops. We would sterilize every world we get to.
  
  What about traveling slightly off axis? Could even tack back and forth.
  
  So why not just stop beside the planet you are aiming for?
  
  Isn't that a solvable problem though? Overshoot the target planet by just enough, that it isn't in the hemisphere of the warp bubble pointed towards the direction of motion.
- I think there was a Simpson’s episode about this.

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?

Opps, singuloose!

Did they drop "analogue" or "simulated" from the title?
- Did a quick search and yep, it was a collection of rubidium atoms https://www.livescience.com/black-hole-analog-confirms-hawking.html

There isn't enough mass in our solar system to sustain a black hole, less on a scientists' research budget.
- There absolutely is. Any mass, no matter how small, will turn into a black hole when sufficiently compressed.
  
  yeah but not sustain
  
  Sure, but it won't sustain itself at any mass. A black hole with a mass of 500,000kg lasts about 10 seconds and is harmless. If you managed to compress 300,000,000kg into a black hole you'd have it last about 100 years and it would still be too small to do any damage to the earth during that time.
  You're correct there's enough mass in the solar system to create a self sustaining black hole though. Anything around the mass of the moon or larger we should worry. A black hole the mass of the earth would definitely be self sustaining, and about a centimetre across.
  
  I like to believe all that mass in an impossible tiny space is a result of all the multiverses stacked on each other.