Current Events > 2 black holes have been found a bit too close for comfort to our solar system

(+) Yeah! (+)

archedsoul posted...

This is all nonsense dude. A black hole is merely a collapse on itself so severe that time basically stops as you get closer to the singularity because of the sheer gravitational pull.

They're not actual holes to other places and the universe being inside a black hole is nonsense.

To be fair, everything you are discussing is theory and not facts. Nobody knows the exact answer.

solosnake posted...

Gamma Ray Burst is probably the scariest.

That was my thought

That and vacuum decay

noisetank posted...

ban black holes

easy peasey

Or just ban books about them. Then they dont exist.

TC you are believing some stuff that makes no sense. White holes are fiction. Black holes are weird enough as it is. Black holes emit Hawking radiation.

Recent studies show a few other things:

1. there is no such thing as a "singularity" of infinite density. Black holes are just really, really dense, not an infinitely dense point.
2. the inside of a black hole is like a ball of yarn. things get crushed in the center, but like squeezing a banana in your fist, stuff squirts out, and the black hole sends out strings of "yarn" that fill the inside of the black hole.

I wouldn't worry about them, once they get close enough some Karen will call the cops on them and that problem will solve itself.

There are people here RIGHT NOW who would rather we do nothing because our world is too far gone to save.

solosnake posted...

Gamma Ray Burst is probably the scariest.

My thought as well.

I read an interesting article the other day about the Schwarzchild radius, which allows us to calculate where the Event Horizon would be for any object in the universe, and by extension lets us calculate just how small anything would have to collapse to in order to form a black hole.

For Earth, if the entire mass of the planet were to collapse to less than about 8 millimeters radius, Earth would become a black hole. For the Sun I think it's about 1400 meters.

So taking that one step further, we know that there are black holes whose radius is millions of miles across, which suggests an absolutely insane size before they became black holes.

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They can. Problem is no visible light meaning no real heat sources meaning there's not really anything special living around a black hole as opposed to a far cooler exoplanet drifting around between other solar systems.

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No. Can be any black hole. Black holes have the exact same mass as the star they came from.

I would think that anything orbiting a black hole would have to be really far out in order to maintain orbit and not get pulled closer

DipDipDiver posted...

I would think that anything orbiting a black hole would have to be really far out in order to maintain orbit and not get pulled closer

The gravitational pull of a black hole is identical to the former star until you cross the apparent horizon. As long as a planet is outside the apparent horizon then it will retain any former equilibrium orbit.

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The stuff absorbed by a black hole has no overlap with the stuff absorbed by a planet in orbit around the black hole. You're probably better off around a black hole than you would be in the empty space between galaxies.

Tagging because this is actually interesting. The rare good thread on CE

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It can't emit "heat" there's no medium for the conduction of heat through space. The "heat" we get from the sun is because of light hitting things here and giving off light.

Don't know if hawking radiation can provide as an acceptable substitute for conventional light.

By definition theyre really hard to find. Im sure theres way more black holes nearby to stumble upon.

Space has always been an interest Theres so much about it that we dont know I love learning about it This also reminds me of a video I recently saw

https://youtu.be/aeWyp2vXxqA

If black holes have the same mass as they did when they were a star, why could they emit light when they were a star? Doesnt a black hole got so much mass that light cant escape its gravity?

Kloe_Rinz posted...

If black holes have the same mass as they did when they were a star, why could they emit light when they were a star? Doesnt a black hole got so much mass that light cant escape its gravity?

No. Gravitational force is an equation based on distance and mass. You're standing on the earth, thus drawn to it by gravity, but the opposite side of the planet has less gravitational pull on you than the ground you're standing under even though they're both pulling you.

Black holes don't have that part. They're super dense. Like REALLY REALLY dense. Up to a certain point, there's no difference between the gravitational pull of the black hole and the former star. But if you get a little bit closer you begin being pulled from both the ground underneath you as well as the ground on the opposite side but this time there's no difference in distance between them so they're pulling on you with much stronger force than they would if they were spread out more.

Tyranthraxus posted...

The gravitational pull of a black hole is identical to the former star until you cross the apparent horizon. As long as a planet is outside the apparent horizon then it will retain any former equilibrium orbit.

The event horizon is like a surface where the ground should be if you jumped off a cliff. But the ground has already jumped in after itself and already has a head start in its own fall. Since there is nowhere for itself to land, both it and you presumably fall for eternity. Anyone who has played a video game and fallen through the ground of a map due to a bug knows the feeling.

You look around and you see the sky texture repeating everywhere you look. You look up through the ground above you only to see the rendered houses and NPCs shrinking at a faster and faster rate as you fall further down into non-rendered nothingness. The death animation state from fall damage never tripped to send you to the game over screen. So you just keep going faster and faster. Fortunately the game development team put in a terminal velocity in the physics engine. Otherwise, the game would have been unable to keep up and would have crashed due to a number overflow. None the less, it still means you have to manually exit the game and start a new one.

It's no wonder a mathematical description of the even horizon is "null hyper-surface."

Thanks Sleepy Joe!

https://youtu.be/4rTv9wvvat8

Theres this one, too

https://youtu.be/QqsLTNkzvaY