The universe we live in is made up of billions of stars, planets and galaxies. Earth where humans live, is in the Milky Way galaxy.
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity (NASA). A galaxy is a group of stars that make up a system. Galaxies consist of more than one large celestial body surrounded by other celestial bodies. In astronomy, a galaxy is a vast system of stars, dust, and gas.
The phenomenon of the Milky Way Galaxy Sling or commonly referred to in international languages as the Milky Way, is a sky appearance that resembles a disk around which more stars appear.
Sources:
https://www.cnnindonesia.com/teknologi/20210504190114-199-638540/mengenal-selempang-galaksi-bima-sakti-bisa-dilihat-saat-sahur
https://www.kompas.com/tren/read/2020/09/13/100200165/why-galaxy-place-bumi-berada-disebut-bima-sakti-?page=all.
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