Star is a luminous sphere of plasma that burns to produce heat and light. It is a luminous body and this makes it responsible for our vision.

A galaxy is a system of stars, gas and dust held together by gravitational force.

Milky way contains the galaxy and the solar system.

This means that milky way is made up of:

  • Sun

  • The eight planets

  • Asteroids

  • Meteoroids

  • Comets

  • Other stars

  • Gas

  • Dust

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