Linked Questions

1 vote
2 answers
552 views

If you fall in a black hole, when do you go past the event horizon? [duplicate]

Say I fall into the event horizon of a black hole. As I cross the black hole, I would appear to outside onlookers to freeze in time, and would never move from that point again. In my perspective, time ...
user avatar
1 vote
0 answers
134 views

How can matter reach the singularity of a black hole if time stops at the event horizon? [duplicate]

Black holes are said to be composed of two parts: A singularity at the center, where all the mass of the black hole is condensed in a point of zero volume. A black and empty ball delimited by the ...
Quantum Force's user avatar
0 votes
0 answers
133 views

Is it possible for things to fall past the event horizon? [duplicate]

Everything I can find says that time dilation approaches infinity at the event horizon of a black hole. Black holes evaporate over a finite amount of time. Wouldn't this imply that somebody falling ...
nocies's user avatar
  • 13
1 vote
0 answers
81 views

Can matter actually go "inside" a black hole? [duplicate]

Pardon my question but I am no astro-physicist. If a black hole is a singularity, A.K.A. a single point in space-time which is infinitely small and which has an infinitely high density, can matter ...
Jules L's user avatar
  • 111
0 votes
0 answers
79 views

How does time stoppage inside a blackhole affect physics? [duplicate]

From the gravitational time dilation theory we know that at event horizon of a black hole the time should stop completely. However all the physics phenomenon we know (at macro level) e.g laws of ...
user1062760's user avatar
0 votes
0 answers
44 views

Is there any matter inside an event horison? [duplicate]

Consider a feeding, growing black hole. We never observe any matter to cross the event horizon, because time stops there. All matter would be "stuck" in a sphere around the event horizon, slowly ...
Eiver's user avatar
  • 516
0 votes
0 answers
40 views

Does it really take an infinite time to reach a Black Hole's event Horizon? [duplicate]

Does it really take an infinite time to reach a Black Hole's event Horizon. The forumla for gravitaional time dialation is. $$t_0=t_1\sqrt{1-r_s/r}$$ So I used wolfram alpha to calculate the time that ...
blademan9999's user avatar
  • 3,001
167 votes
9 answers
41k views

Does someone falling into a black hole see the end of the universe?

This question was prompted by Can matter really fall through an event horizon?. Notoriously, if you calculate the Schwarzschild coordinate time for anything, matter or light, to reach the event ...
John Rennie's user avatar
135 votes
15 answers
36k views

How can anything ever fall into a black hole as seen from an outside observer?

The event horizon of a black hole is where gravity is such that not even light can escape. This is also the point I understand that according to Einstein time dilation will be infinite for a far-away-...
Matt Luckham's user avatar
  • 1,747
21 votes
5 answers
3k views

Event horizons without singularities

Someone answered this question by saying that black hole entropy conditions and no-hair theorems are asymptotic in nature -- the equations give an ideal solution which is approached quickly but never ...
spraff's user avatar
  • 5,188
7 votes
2 answers
1k views

Are black holes eternal?

The question might sound very easy - Hawking radiation, however I was pondering that as you get closer and closer to a black hole, time dilates exponentially where the surface of the black hole is "...
user avatar
2 votes
2 answers
1k views

Do you see the outside world from inside the black hole (can you see past the horizon from inside it)? [duplicate]

I have read these questions: If you fall in a black hole, when do you go past the event horizon? Can matter really fall through an event horizon? How can anything ever fall into a black hole as ...
Árpád Szendrei's user avatar
6 votes
3 answers
659 views

Zero $g$ in a black hole?

At the very centre of the Earth, masses cancel each other out, creating an effective zero-$g$ environment. Would the same happen in a black hole?
Amphibio's user avatar
  • 1,059
2 votes
3 answers
936 views

Does it actually take infinite (observer) time for someone to fall into a black hole?

If you were to watch your friend approach a black hole, I understand that you'd see their clock slow until they appear frozen and redshift within a few seconds. But if you were to detect the ...
Cam White's user avatar
  • 597
6 votes
2 answers
239 views

Dropping a mirror into a blackhole

Say you dropped a mirror into a black hole while observing at a distance and holding a clock such that the clock's face was pointing to the black hole. What is the latest time you would view on the ...
blademan9999's user avatar
  • 3,001

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