Star --> system --> galaxy --> universe
The astronomical objects
The solar system is made up of the sun and planets that are revolving round it.
Stars are objects of astronomy that are made up of spheroid of plasma which are held together by its gravity.
The size of an average star is between 0.5-8 solar masses.
The galaxy is made up of stars that are gravitationally bound together. The content of stars are stellar remnants, interstellar gas, dust, and dark matter.
The universe is a large space that comprises the stars, solar system and galaxies.
Learn more about stars here:
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