Star is a term that is familiar to human ears. When night comes, humans on the surface of the earth can see thousands of stars in the sky. The thousands of stars seen by humans at night are just a few of the billions of stars that exist in outer space.
Stars are celestial bodies that can produce and emit their own light in the universe. Stars are large balls of various gases that have heat and emit light. However, because it has a great distance from the earth, the stars seen by humans are only small points of light.
Stars are not just a beautiful decoration in the night sky. But the star has the benefit of being a directional sign. Stars can show the direction of east, west, south, the air by observing the constellations.
Constellations are formed as a result of a constellation or a collection of interconnected stars. There are 12 constellations of the zodiac, namely Capricorn, Aquarius, Pisces, Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, and Sagittarius.
Each of these constellations has a name that comes from the shape of the constellation, such as Leo which means lion because it has the shape of a lion. Likewise, the constellation Scorpio is in the form of a scorpion.
Each constellation usually appears once a year, usually appears in the sky for a month, then sinks and is replaced by other constellations.
The star itself has a size smaller than the size of the sun, which is 100 times smaller than the size of the sun. However, there are many types of stars that are larger than the sun, namely giant stars 30 to 50 times larger, blue supergiant stars 100 times larger, and supergiant stars several hundreds of times larger.