How to get rid of a Black Hole.

[Womplord]

Create an antimatter black hole and make it collide with the black hole. brace for massive explosion

 

[Imthatguy]

{{Fuck Physics we're gonna have a space opera time}}

If he humans in your story accomplish FTL by an alcubierre drive they could repurpose said technology to 'speed up time' around the black hole and kill it by leting all its energy/mass [1] escape via hawking radiation.

[1]there should be a word that describes both and excludes neither introduced into english

 

[DanDeFool]

I have the solution: gravitational towing.

You don't need to destroy it necessarily, just make it not hit your solar system. With enough warning you could theoretically change it's path so that it misses the solar system or just misses all objects and slips through harmlessly.
Build a GIGANTIC spaceship and have it move right next to the black hole, but outside of it's event horizon. Black holes are still affected by gravity like everything else so gradually the black hole will be pulled towards the spaceship's gravity. Gradually the spaceship will be able to tow the black hole in whatever direction it wants. This method [a href="http://arxiv.org/ftp/astro-ph/papers/0509/0509595.pdf"]is already an idea being considered for avoiding asteroids[/a]; a black hole would work the same way, just on a much larger (though is some ways smaller) scale.

Actually, after finishing my last post, I just realized something. The rogue black hole could have a mass several times that of our entire solar system. It'd probably be easier to just use this idea on our own sun, thus pulling the entire solar system out of harm's way.

Thinking outside the box.

Or we could just do nothing.

A black hole is not as dangerous as it's reputation has made it out to be. A Black hole's force is just gravity, the same gravity that everything in the universe exerts, which at a distance is incredibly weak. A black hole with the mass of the sun is no more dangerous to us than the actual sun is; in fact less so.
Sure if the black hole came VERY VERY close (like closer than the moon)it could swallow us, but the solar system is HUGE and very spread out. the chances of it actually hitting a planet is super low. All the black hole is likely to do is disrupt the orbits of some objects it passes nearby.
We're at more risk from asteroids and comets that the black hole would dislodge from their natural orbits.


Also, how would we know the black hole is even coming? They are freakishly hard to detect.

Well, that's why it's a hypothetical disaster sci-fi movie situation. We're assuming that, somehow, we already know the black hole is coming and that it's going to hit and subsequently swallow the earth.

We're trying to explain how the heroes save the earth in the scenario; not justify it from basic principles. Yes, it's an unlikely situation, and about as dumb as any other sci-fi disaster movie (2012, anyone?) But just trying to explain it away doesn't really answer OP's question.

 

[ZtH]

Well time to jump way over my head and give this a shot. Since the gravitational constant is tiny in comparison to the Electromagnetic constants I would think a reasonable way to break apart a black hole would be to create an electric field strong enough to create a charge in the black hole. If you created a strong enough charge the mass in the black hole should start to push itself apart, and hopefully since they both decrease at a rate equal to the distance squared it would slowly split apart rather than exploding. This whole thing rests on being able to create a charge that would do it, which I think is well beyond our scientific capabilities and of course it relies on not destroying everything else around you at the same time...

 

[DracoSuave]

I've never seen one before - no one has - but I'm guessing it's a white hole.
[sub]This answer definitely isn't serious, but it may be both humorous and, by an astronomically slim chance (pun intended), strangely prophetic.[/sub]

But what IS it?!

 

[William Dickbringer]

So I have this idea for a short story. It mainly involves a mission by astronauts to get rid of a Rogue Black Hole (that's a Black Hole that moves, incase you didn't know) that will swallow up the Earth and Sun if it isn't stopped. How would one hypothetically do this?

My current idea is a bomb so powerful that (with a touch of space-magic) it counteracts the gravitational force of the Black Hole and basically fizzles it out. But I then thought that such a bomb would have to infinitely powerful, and an infinitely powerful explosion would just blow up the universe.

So, hypothetically, how do you think we could solve this problem?

well through the magic science bs and bomb powerful enough to cause a black hole and can only be set off by being in sucked up in a black hole when sucked up will cause the black hole on the inside to eat the black hole on the outside thus causing the two eat each other into non existence

 

[James Mann]

Hawking radiation would not work, if the black hole was small enough to dissipate through hawking radiation then the story would be crap, urgo it would have to be larger, a large black hole's hawking radiation emission is not large enough to cancel out the average amount of material it picks up, just from the radiation found in space alone. Only very small black holes emit hawking radiation fast enough to dissipate. Remember also, that the event horizon of a black hole is the point at which that anything, including light it caught in the gravitational pull; Urgo any form of explosive would simply be devoured by the black hole, no matter how much force you put in, if LIGHT cannot escape, the force of you're blast wouldn't.

As for a legit way to combat the black hole? Interstellar bowling. The only thing i can think of is a mass large enough to alter the course of the black hole, something along the lines of another black hole, an act of force on one side, say a supernova may also work, so possibly have you're characters find a massive star close to where it passes and have them come up with a techno babble method of causing it to go supernova.

I'd say they are you're two choices, either way the only real option is knock it out of its path enough to miss the star system.

 

[Jason Arencibia]

If we detected a rouge black hole on a collision course with our solar system. At our current technological state. just make good with all the friends and family you haven't talked to in a while! It's taken 35 years for voyager 1 and 2 to get to the outer edge of our solar systems heliosphere, a rouge black hole would get here before we could do anything! and our best chance would have been upgrading the shuttles and retrofitting them with better boosters and using the cargo bay area for more fuel, it would be a suicide mission but we don't even have that now!

No use running a rut in the ground worrying, nothing can be done!

1) Open a wormhole to an alternate universe that is exactly the same as ours except from the fact that anti-matter won over matter in that universe inside the black hole.

2) The wormhole will suck in both the anti-matter black hole, and the matter black hole, into the space between the universes.

3) Black holes will cancel each other out and create a massive awesome explosion (Because when antimatter touches matter it reacts violently and there is an awful lot of matter/anti matter inside the two black holes so the magical space portal is necessary so that the black holes don't end up blowing up the galaxy.)

4) Optional: find some way to harness the energy released by the massive awesome explosion mentioned above (Which will be a massive amount of energy because all of the mass inside the two black holes is completely destroyed, and releases tons of energy).

5) ???

6) Profit!

1. some think black hole's open there own wormhole.
2. if you could open a wormhole for the black hole to enter.... maybe, but it would have to be massively huge. I think a black hole's gravity could cause a wormhole to collapse on itself if it wasn't excessively larger then the black hole.
3. Matter Anti-Matter collisions destroy equal amounts of each other when they contact each other. not saying the energy from the explosion wouldn't be destructive, it would most likely destroy the galaxy the event happen in! but again imagine creating a wormhole/portal big enough to surround our sun, our sun is to small be become a black hole! so realistic idea of creating a wormhole more then 3 times larger then our sun for the smallest black hole doesn't sound feasible even in sci-fi.
4. Matter Anti-Matter engines are being studied because out of all of our known energy sources, Matter Anti-Matter uses 100% of the energy. if we could harness the energy released by the massive explosion we could recycle energy from modern energy sources for secondary functions! for example if we could harness and use the heat from in internal combustion engine as we are driving we could use that otherwise wasted energy to power something else! but we don't!