Question

1. galaxies are made up of...

black holes
dust
planets
dark matter
stars
gas

Explanation:

Galaxies are composed of stars, gas, dust, planets, black - holes, and dark matter. All these components contribute to the structure and dynamics of a galaxy. Stars are the luminous bodies, gas and dust are the raw materials for star formation, planets orbit stars, black holes can be found at the centers of some galaxies, and dark matter provides additional gravitational effects.

Answer:

Black Holes, Dust, Planets, Dark Matter, Stars, Gas