Astronomy

4003 readers

4 users here now

founded 2 years ago

MODERATORS

Sal@mander.xyz

The largest Black Hole compared to Our Solar System (lemm.ee)

submitted 1 year ago by original_reader@lemm.ee to c/astronomy@mander.xyz

28 comments fedilink hide all child comments

The largest Black Hole compared to Our Solar System

you are viewing a single comment's thread
view the rest of the comments

[–] elavat0r@mander.xyz 1 points 1 year ago (1 children)

When I said "ray" I just meant an imaginary line that could be drawn to extend in a given direction, not a literal particle escaping. It was mostly to think of a way you might conceptualize an orientation of an object that may not have any dimension. As in, if the matter just outside a singularity rotates, perhaps you could consider it to rotate? But I'm not sure that would be accurate to say anyway. My grasp of the physics of black holes is obviously pretty loose. :)

Thanks for taking the time to explain!

[–] jarfil@beehaw.org 2 points 1 year ago

an orientation of an object that may not have any dimension

The thing is, if it had no dimension, then there would be no way for it to have any orientation in some dimensions, it would have to be perfectly identical regarding all dimensions.

if the matter just outside a singularity rotates

It's a bit more fun, because it would be normal for matter to orbit around before falling in, but "frame dragging" means that not just matter, but also light outside it rotates with the black hole, and time gets stretched.