<p>Once you are inside a black hole, every direction leads towards the singularity.  So for every particle, whether it is massless or not, would travel towards the singularity, and not escape.</p>
<p>Axions have not been proved to exist, but they would also not be able to escape.</p>

CC BY-SA 4.0
2020-08-23T07:34:43.157Z
Ok, so an object with 0 Gravity and positive Gravity can't escape a Black Hole but is there any probability that Exotic Matter can escape because it has repulsive Gravity and opposing properties.
Loop Quantum Gravity
CC BY-SA 4.0
2020-08-23T07:42:11.530Z
see https://physics.stackexchange.com/questions/153376/what-would-happen-if-a-negative-mass-crossed-the-event-horizon-of-a-black-hole The negative mass can't escape, the black hole.
James K
CC BY-SA 4.0
2020-08-24T08:32:16.347Z
James, do you know of any astrophysical entity which can escape the Black Hole. Or, there is nothing in our knowledge, that can escape the Black Hole.
Loop Quantum Gravity
CC BY-SA 4.0
2020-08-24T12:54:38.967Z
To our best current understanding of black holes (GR) nothing can escape a black hole.  Space inside a black hole is curved so all directions head towards the singularity, so it doesn't matter what direction you go, at what speed and with what special properties a particle might have, you will always move towards the singularity.  It is like "can you escape next wednesday?"  because the only permitted direction in time heads towards next wednesday.  It doesn't matter what happens you are sure to get to next wednesday eventually.
James K
CC BY-SA 4.0
2020-08-24T12:58:55.657Z
So, in your opinion, there is no such astrophysical or Quantum object which can escape the Event Horizon of the Black Hole, by our current models, General Theory and Quantum Field Theory
Loop Quantum Gravity
CC BY-SA 4.0
2021-02-16T23:38:30.473Z
In a more abstract or philosophical sense, could not the theory of everything escape a black hole?  I mean, it could know what's going on in there, so far as it's in there, and, we might come to know it.  I know that philosophy is out, but, still.
G. Rem laughs at the MonicaC's
CC BY-SA 4.0
2020-08-23T06:28:27.603Z
2020-08-23T06:28:27.603Z
James K
<p>I read about Tachyons and Gravitational Waves and also about Exotic matter, really nothing can escape a Black Hole, can <a href="https://en.wikipedia.org/wiki/Axion" rel="nofollow noreferrer">Axions</a> escape for providing a new hope?</p>

CC BY-SA 4.0
2020-08-22T20:11:34.103Z
No. Axions are like neutrinos, but yet more smaller. They are not even massless, like photons. Btw, there is no proof that they would exist.
peterh
CC BY-SA 4.0
2021-01-29T23:44:38.387Z
There are [some hints](https://arxiv.org/abs/2006.09721) for the existence of Axions though and the [XENON Dark Matter Search](http://www.xenon1t.org/) still looking.
B--rian
<black-hole><general-relativity><axion>
Can Axions escape the Black Holes?
Loop Quantum Gravity
# Can Axions escape the Black Holes?

(Asked by: username_0 on 2020-08-22)

I read about Tachyons and Gravitational Waves and also about Exotic matter, really nothing can escape a Black Hole, can [Axions](https://en.wikipedia.org/wiki/Axion) escape for providing a new hope?

**Tags:** black-hole, general-relativity, axion

> **Comments:**
> **username_1**: No. Axions are like neutrinos, but yet more smaller. They are not even massless, like photons. Btw, there is no proof that they would exist.  
> **username_2**: There are [some hints](https://arxiv.org/abs/2006.09721) for the existence of Axions though and the [XENON Dark Matter Search](http://www.xenon1t.org/) still looking.  

---

## 1 answers

### Answer by username_3 on 2020-08-23. Score: 3 | Accepted answer

Once you are inside a black hole, every direction leads towards the singularity. So for every particle, whether it is massless or not, would travel towards the singularity, and not escape.

Axions have not been proved to exist, but they would also not be able to escape.

> **Comments:**
> **username_0**: Ok, so an object with 0 Gravity and positive Gravity can't escape a Black Hole but is there any probability that Exotic Matter can escape because it has repulsive Gravity and opposing properties.  
> **username_3**: see https://physics.stackexchange.com/questions/153376/what-would-happen-if-a-negative-mass-crossed-the-event-horizon-of-a-black-hole The negative mass can't escape, the black hole.  
> **username_0**: James, do you know of any astrophysical entity which can escape the Black Hole. Or, there is nothing in our knowledge, that can escape the Black Hole.  
> **username_3**: To our best current understanding of black holes (GR) nothing can escape a black hole.  Space inside a black hole is curved so all directions head towards the singularity, so it doesn't matter what direction you go, at what speed and with what special properties a particle might have, you will always move towards the singularity.  It is like "can you escape next wednesday?"  because the only permitted direction in time heads towards next wednesday.  It doesn't matter what happens you are sure to get to next wednesday eventually.  
> **username_0**: So, in your opinion, there is no such astrophysical or Quantum object which can escape the Event Horizon of the Black Hole, by our current models, General Theory and Quantum Field Theory  
> **username_4**: In a more abstract or philosophical sense, could not the theory of everything escape a black hole?  I mean, it could know what's going on in there, so far as it's in there, and, we might come to know it.  I know that philosophy is out, but, still.  

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