Because gravity can "escape". It is light that cannot escape a super heavy star.
*except Hawking radiation if I understand correctly, but I doubt it transfers information about the hole's mass.
-
-
-
So information *can* escape a black hole? Do gravitational waves move faster than light? Does this allow FTL communication?
-
This is highly debated. Gravity waves, however, do seem to move at c, sadly.
-
Gravity waves are insanely hard to detect too, & we have little idea if detections are related to visible star observations.
-
The thing is though, you literally have to suddenly destroy mass to get a jump in gravity to detect. And that's rare.
-
It is also, fortunately, very far away!
-
I'm not that current though. Could be I'm out of date with latest research.
End of conversation
New conversation -
-
-
AFAIK? the estimation of the blackhole mass is based on external influence, not internal erradiations
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.