Author Topic: Passing through black holes  (Read 583 times)

Offline Ian Zonja

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Passing through black holes
« on: 09/21/2017 11:41 AM »
Hey, all!
What knowledge about black holes do we actually possess?

Is it possible it leads not only to another "place" in space but another dimension?

Does anyone have more info about this black hole, and is it relevant for us?
http://www.evolving-science.com/space/astronomers-discover-huge-black-hole-near-center-milky-way-00385

Offline Jim

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Re: Passing through black holes
« Reply #1 on: 09/21/2017 01:35 PM »
Hey, all!
What knowledge about black holes do we actually possess?

Is it possible it leads not only to another "place" in space but another dimension?

Does anyone have more info about this black hole, and is it relevant for us?
http://www.evolving-science.com/space/astronomers-discover-huge-black-hole-near-center-milky-way-00385

We have no actual knowledge, just theory

Offline eeergo

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Re: Passing through black holes
« Reply #2 on: 09/21/2017 02:04 PM »
The book Kip Thorne (the astrophysicist behind the movie Interstellar) wrote to complement the film is very informative and goes into some detail as to (1) what we know with reasonable certainty (as Jim says, mostly theoretically), (2) what we can reasonably speculate upon without actual solid proof and (3) what other plausible physical effects we can theorize upon but are on very shaky ground.

https://www.amazon.co.uk/Science-Interstellar-Kip-Thorne/dp/0393351378

In short, most empirical knowledge about black holes is sparse and very few actual measurements have been performed on the physics of their immediate vicinity (close to their event horizon). It is however a very dynamic field of study, and it is expected the first picture where an event horizon can be resolved will be acquired "soon" through Very Long-Baseline Interferometry (see, for example, http://news.nationalgeographic.com/2017/04/black-hole-event-horizon-telescope-pictures-genius-science/).

The proposed black hole you link to is, for now, an observation of a rapidly-accelerated gas cloud, and would imply the second largest known BH in the Milky Way. It is important because of its size, but also because of its mass range, where no other black holes have been detected yet. However, its location near the center of the Galaxy is far away enough it doesn't really affect us in any way.

As you can see, we're at the stage of theorizing basic properties of black holes and starting to observe the bestiary of them that exists in Nature. We're still some ways away from really knowing (and using) what happens close, or in them.
-DaviD-

Offline MattC

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Re: Passing through black holes
« Reply #3 on: 09/27/2017 10:13 AM »
Heres two awesome short vids about black holes made by kurzgesagt - for all those who would like to get to the current "basic knowledge" we have:






Tags: black hole Space