Exploring a Black hole sci fi possible/not possible

Question

I'm currently creating a universe and in that universe is the human race which has been around for about 37000 years. I am currently trying to figure out what tech they would have access to what would be left unexplored/impossible. They have started colonizing the galaxy and have seeded many solar systems. They do have the ability to travel near light speed and bend space to travel farther(I wanted to avoid going above light speed to avoid weird time stuff so I went with bending/contracting space in some manner. They do have access to massive portable power sources related to a fictional portion of the story. I might make a separate post about this as travel speed is important to the story) so they would definitely have the ability to reach black holes.

I was thinking about hiding a process within black holes to explain why they don't understand it/haven't ever seen it in nature(this universe is not the same as ours but I do want to keep similarities), but I'm not sure if humans would have the technology to explore or probe black holes more intimately in 37000 years. After that primer this brings you to the main question:

If you could have any technology(say you could patch any holes in the theory or currently unknown physics with some magic/sci-fi stuff) would it be possible for a person to explore a black hole or at least get more information about the area beyond the horizon?

I'm just curious about what would be needed to accomplish this so I can decide whether or not they will have access to that kind of tech. I wanted it to have some basis in reality ,but I do expect to create quite a bit of fictional answers just depends on how much. Maybe I'll scrap this idea if it turns out badly.

Thanks!

Edit:(Replying to the question on their travel capabilities) I want them to be able to travel through space within a reasonable time period without having to deal with hard to understand time changes or what not revolving around extremely high speeds. My understanding of high speed space travel is shallow. I specifically wanted to avoid having to deal with time travel, but I wanted there to be a way to travel space efficiently. I read something about a travel method that could contract space in front of the vessel and expand it space behind it. I was going for something along this line. I also was thinking about some sort of wormhole but I'm just exploring options at the moment trying to get the setting right.

Answer 1

Not without weird time stuff

Let's say that your civilization tries to get information out of a black hole by sending an explorer in past the event horizon who sends a message, which arrives outside the black hole, in a finite amount of time. They could use some alternative process, but from the point of view of relativity, these details are mostly irrelevant.

From the point of view of an outside observer, the explorer will never reach the event horizon. Therefore, this outside observer will receive the message before the explorer even enters the black hole. This also means that the explorer themself will be able to receive their own message from when they are inside the black hole before they are even in the black hole.

Say the civilization patches the black hole to remove the event horizon. Because this effect will travel at the speed of light or slower, you again get the same problem: the information will come out of the black hole before the patch reaches the black hole.

For small black holes (ones that are created in a lab for example), it is possible that physics (depending on what theory of quantum gravity is actually correct) might allow a civilization to measure its hawking radiation to get information, say about a probe that was involved in the formation of the black hole. Doing so would require the a way to form black holes in a lab, which would ultimately be a source of near infinite energy (by hawking radiation again). But exploring the interiors of existing black holes in this manner would require such an absurd amount of time as to be impossible.

Answer 2

The technology that your civilization would need to explore the inside of a black hole is "space folding." This would allow access to the inside of a black hole without having to pass through the zone where time is essentially frozen.

For a sphere, gravitational forces cancel out in the center. You'd still have to contend with the unimaginable pressure in the center. If you connected a wormhole gate to the center of a black hole, material would come spewing out of it on your end. That would make a fairly scary weapon.

Update: Woli asked how this interacts with an Alcubierre drive. It really doesn't. An Alcubierre drive works via relativistic foreshortening. All points in space stay in the same order, but some points are closer to each other when the foreshortening is in effect. With space folding and wormholes, you pull non-adjacent points adjacent to each other.

Answer 3

Alright since the answers so far have some common misconceptions in them, ill try my best to give an accurat but simple answer.

TLDR; No.

A Black Hole, in General Relativity, has 3 intrinsic attributes. That being, properties of the Singularity itself. Mass, Spin and Charge. Mass is simple, it is the total Energy / weight of the thing. Spin, or angular momentum, is a side effect of the Size. This is related to the conservation of Angular Momentium. I.e if something big that spins slowly becomes very small it spins faster. Hence, Black Hole singularities ALL spin. Some spin at up to 99% the Speed of Light. These are known as "Kerr Black Holes". Lastly, Charge is the most useless attribute. Basically, we know that if you throw a bunch of say Electrons into a Black Hole it HAS to become negativly charged. But we dont really know how that would effect things.

All Black Holes in the Universe have these 3 attributes since even a Black Hole made out of a literaly single Proton has them. However, for all intend real Black Holes probably are Neutral in charge since that is how Averages work. On average everything is neutral.

So, we can ignor the so called "Kerr-Newman Metric" in evaluating your question and focus on Kerr black holes.

Is there a way to get information out of the Event Horzion´s interiour ? Well yes, there is 1 way. You can jump into it and find out. However, in a broader sense it is 100% absolutly withouth question impossible to get useful information out of the Horzion. And this is because Black Holes are a bit more complex than pop culture imagines them.

A Black Hole´s Event Horizon is the boundary after which it is quiet literally impossible to get out again. This can be explained rather simply. Outside the Event Horizon your distance to the Singularity can always increase. However, the moment you cross into that Horizon your distance to the Singularity can only decrease. This is why people say "Inside the Horizon time and space switch place". Its because the way Space is curved inside the Horizon you arriving at the center is as inevitable as tomorrow being Thursday.

The more accurat explaination is that inside the Event Horizon spacetime contracts faster than the speed of light, hence it is impossible to get out since Spacetime drags you down no matter how much you resist it.

And this fact of life dosnt change no matter how creative you get. Some people brought up Wormholes and i would like to comment that Wormholes are so theoretical that they almost certainly dont actually exsist. Similar to White Holes. Its just a funny math trick.

No matter how advanced your tech is, there is no way to get Information out of a Black Holes Horizon. Quiet literally the only way to find out what really goes on inside is to take one for the team and go in. Now, this dosnt mean having acsess to Black Holes would be bad. If we had one we could study that would probably enable us to have some fairly good guesses as to what goes on inside. But the ambiguity would always remain.