But they aren't. The objects are following orbits. The orbits are determined by the overall total distribution of the matter making up the galaxy.
Who taught you that?
The Black hole at its center barely contributes anything to this because its mass is pretty insignificant in comparison to the total mass of the galaxy.
At the center of a galaxy can be only two scenarios, nothing or a huge group of stars. Nothing is the most plausible. Galaxies form from outside not from a pulling center, like storms do.
Secondly, for the vast majority of the galaxy, it would not matter if the 4 million solar masses of Sagittarius A was compacted into a black hole or spread out over a larger volume, because, until you get very close to it, a black hole does not differ from anything else in terms of gravity.
And, according to you, getting near a black hole in order to be pulled, what do you mean with "very close to it"?
Images shown online -fake from fanatics, computer simi=ulations from science institutions, magazines and more, show stars trapped in such pulling force of black holes, and when you look at them, you can easily conclude that all those images are nothing but fantasies.
Also, the chance for another planet to hit earth is as rare as my uncle Ricardo Martino hitting someone when driving his car as 10 miles per hour, and you guys talk of stars colilision into black holes as happening every five minutes. A little more and you will start predicting that tomorrow afternoon at three thirty another star will fall deep inside a black hole located besides Sagitario. A fanatic from your gropu will put the video taken that night...
Come on, too much theoretical garbage. From followers of black holes the only truth in their articles is the date when they wrote them, after that those are nothing but imaginary events, and lots of possible scenarios: ... if you get near a black hole then this... that..and if you travel inside a black hole then this... that.... and if a black hole comes near earth then this... that...
Like Luchito, you are basing your arguments on a misconception of what a black hole is and how it is expected to behave.
A black hole is pure imagination at work, it doesn't exist in physical reality. The expectations of the behavior of a black hole depends of what kind of programming you will input in your computer to make it show radiation around it, to show it pulingl other bodies, and so forth.
When one looks at space he only sees static images from far away, and here is when the imagination prevails over interpreation, and black hole theorists interpret everythting as pulled by black holes...
Phyics, the branch of science, before Relativity was a respectable part of science, but now is full of clowns who have convert it into a circus.
How long will be for black holes believers to realize they have been deceived is hard to predict, but this insanity has invaded lots of minds already, and hope is for new generations to grow up free of this kind of pseudoscience like Relativity and black holes.