The sun is a star within the arms of the galaxy and is positioned about 2/3rd of the way out from the centre of the galaxy at a distance of 30,000 light-years.
A galaxy is a collection of stars, stellar remnants, interstellar gas, dust, and dark matter that is gravitationally bound. The name comes from the Greek word galaxies, which translates to mean "milky" and refers to the Milky Way galaxy, which houses the Solar System. A supermassive black hole also resides in the centre of our galaxy, the Milky Way. You see additional stars in the Milky Way as you look up at the stars in the night sky.
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