Question

what is galaxy!!?????​

Answer 1

Answer:

A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems, all held together by gravity.

Explanation: When you look up at stars in the night sky, you’re seeing other stars in the Milky Way. If it’s really dark, far away from lights from cities and houses, you can even see the dusty bands of the Milky Way stretch across the sky.

Answer 2

Answer:

Basically, galaxies are the fundamental units of structure in the universe where stars form. Theory currently holds that all galaxies are confined by the gravity of the dark matter halos that permeate and surround them, but there is recent evidence that some galaxies may be dark-matter-free.