Question

What are the differences between stars, planets, and galaxies?

Answer 1

The Earth is an example of a planet and orbits the sun, which is a star. A star is usually defined as a body of gas which is large enough and dense enough that the heat and crushing pressure at its center produces nuclear fusion. ... Our solar system consists of the sun, the Earth and eight other planets.

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Answer 2

Planets=It refers to the celestial object that has a fixed path ,in which it moves around the sun.

Galaxy=It is a huge collection of gas ,dust and billions of stars .A galaxy is held together by gravity.

Stars=It is astronomical object. that emit their own light ,produce due to thermonuclear fusion.