How does gravity affect galaxies?
1 Answer
Aug 15, 2016
It keeps the components of the galaxy intact and the galactic structure constant.
Explanation:
It is postulated that many galaxies have super-massive black holes at their center (eg. Milky Way), and that the arms of the galaxy are bound by gravity to form a coherent structure. Gravity works at every level of the galaxy and maintains a stable equilibrium between components, so that parts of the galaxy do not "drift off".
