Viewing a single comment thread. View all comments

charlesfire t1_j2pcutp wrote

Reply to comment by BrobdingnagLilliput in How do galaxies move? by modsarebrainstems

Supermassive blackholes aren't nearly massive enough to hold together galaxies. If Sagittarius A* disappeared tomorrow, the Milky Way would be pretty much unaffected.

11

purpleoctopuppy t1_j2ppxg6 wrote

Just to add some numbers, Sagittarius A* is 10⁶ solar masses while the Milky Way is 10¹², a million times more massive; comparable to the difference between the Earth and the Sun.

11