Black Hole

[catcow1964]

Do you think we are the remnants of a galaxy sucked into a black hole?

[Airbrush]

Yes, we are the remnants of the Milky Way that was not sucked into our central black hole. Even though that black hole is a few Million solar masses, it is a small mass compared to the entire galaxy of hundreds of Billions of solar masses. That central black hole only sucked up matter in the central region and had very little affect on the entire galaxy.

[Ncurtisbrown]

Yes, we are the remnants of the Milky Way that was not sucked into our central black hole. Even though that black hole is a few Million solar masses, it is a small mass compared to the entire galaxy of hundreds of Billions of solar masses. That central black hole only sucked up matter in the central region and had very little affect on the entire galaxy.

 

 

Wait, isn't that black hole at the center of the milky way extremly "heavy"? I thought that that was how the entire milkyway orbited it, because of it's gravitationl force.

[Sisyphus]

Wait, isn't that black hole at the center of the milky way extremly "heavy"? I thought that that was how the entire milkyway orbited it, because of it's gravitationl force.

 

What we're orbiting is the center of mass of the galaxy.

[Airbrush]

Wait, isn't that black hole at the center of the milky way extremly "heavy"? I thought that that was how the entire milkyway orbited it, because of it's gravitationl force.

 

You are confusing dark matter with the galactic central black hole. The rotation of the outer galaxy can only be explained by a lot of invisible dark matter. The visible matter in our Milky Way (stars, gas, and dust) is about one Trillion solar masses, and more than half of that is gas and dust. That is a LOT of gas and dust. And yet all that mass does not explain the outer galactic rotation. The central supermassive black hole is only a few Million solar masses. That is very tiny compared to a visible mass of a Trillion solar masses of ordinary matter, and another several Trillion solar masses of dark matter.