Question

The vast collection of billions of stars, along with a vast amount of gas and dust in space is called a _______.

Answer 1

1. A Galaxy is nothing but a collection of billions of stars, gas, dust, planets, solar systems, comets, asteroids, and other celestial bodies.
2. One such galaxy is the milky way, where Sun and solar system are present.
3. A galaxy as shown in the figure:
   

Hence, the vast collection of billions of stars, along with a vast amount of gas and dust in space is called a galaxy.