Is SpaceTime infinite in all directions?
I thought in a closed universe it's kind of like a bubble. There are no hard boundaries, no edge to the universe. But light going in a straight line doesn't always go further and further away from its source but eventually starts coming back just due to...
Yes, I've finally come to realize this is my issue. I mistakenly thought a free falling observer experiences time dilation. Staticboson has set me straight on this, as well as this post of yours. Thanks.
I'm probably saying something stupid here.
But I find that definition to be assuming that SpaceTime is everywhere, at the very least it assumes that SpaceTime exists inside the EH therefore if it were found that there was no SpaceTime inside the EH then by that definition, that which we...
I accept this.
Even from the infalling observer the event horizon would have no light come at them from the inside. But the EH isn't a physical barrier, the person falling in doesn't realize that time slows down, their own clock appears to them to tick normally.
If they were looking outward...
From what I have read the twin paradox has nothing to do with acceleration but instead a change in inertial frames.
Being positioned on the surface of large gravity source (experiencing gravity) is equivalent to accelerating.
Yeah, I figured it would collapse in on itself before it got to a point where SpaceTime at the centre would be curved. (Not that I am saying that SpaceTime would be curved inside the shell or sphere)
I don't know this stuff, you people do, so I'm just learning here.
Better for me to learn about...
As far as I understand it, there would be no difference on me and my orbit, whether the material in the black hole's accretion disk fell into the black hole or remained in the accretion disk. Whether it is in the accretion disk or in the black hole it still has the same gravity effect on me.
Fair enough, but it was useful for me because in the previous post you gave me the answer I was looking for. (not the answer I was hoping for, but the answer I was looking for none the less.) Thanks.
Yes, you did. Great article by the way, well written too. A bit over my head. But I enjoyed reading it.
I do understand that time isn't constant. I understand that time runs constant for a participant, but for a distant observer they may consider the participant's time to be fast or slow.
I...
Yes of course.
But, if we have a massive hollowed out sphere. With a huge amount of mass, what impact does that have on SpaceTime inside that sphere?
Is it possible for that hollowed out sphere to be so massive that SpaceTime itself cannot exist inside it, due to the curvature that the massive...
It's funny or sad (if you are me) to read where it says
"it won't be for any of the simplistic reasons associated with common misconceptions i.e. it won't be because they take an infinite of time to form".
I don't quite understand the reasoning. It talks about using the falling object's clock...
I was wondering whether it ends up spiralling around the black hole rather than plowing straight into it. Whether SpaceTime near the black hole has an angular direction around the black hole.
I don't view the universe as Euclidean. I don't assume the universe always behaves according to my...
That's good to know.
I have thoughts on things, as I expect most people do. I don't have the education to know if my thoughts are things that have been considered or are unfeasible. I certainly wouldn't push my thoughts as if they are the way reality is. So I'm not trying to push a personal...