Do you know facts about stars? Stars are one of the most beautiful celestial bodies in the clear night sky. These stars have a unique arrangement and sometimes form formations that are very familiar to us. The stars we see are not only white but sometimes the stars we see are also red, blue, and orange. The stars we see are also like disco lights twinkling in the sky.
However, did you know that the stars we have seen so far have very different facts from what we see with our eyes? Here are 5 things about stars that you must know.
The Facts Behind Frequently Asked Questions About Stars
- Is it true that the stars twinkle like decorative lights?
Stars are celestial bodies consisting of hydrogen, helium and other elements. Some stars have their own light and some only reflect light from other stars. The starlight that you see from the earth may be tens of light years away from the earth. The starlight passes through the layers of the earth’s atmosphere and is refracted by the atmosphere due to differences in temperature and density of the earth’s atmosphere. Therefore, you see the stars as twinkling in the night sky.
- Why are the stars different colors?
When you see the starlight in the sky, what color do you see the most? Maybe most will answer that white is the color that is most often seen. Did you know that the stars in the sky have 7 classes which will produce different colors? The star classification is based on the star’s ability to absorb hydrogen. Quoted from the Astronomy Info page, the stars are divided, the seven classifications are called Oh Be A Fine Girl Kiss Me.
Stars that are blue (Class O) have a higher temperature than stars that are blue-white (Class B). Class B stars have a warmer temperature than Class A stars, which are white. Stars that are red in Class M are stars with the lowest temperature compared to other stars. Very unique, right?
- Is the star a pentagon?
When you are asked to draw a picture of a star, you must draw a pentagon shape, like a piece of star fruit. Researchers claim that the star is not a pentagon shape, but is round in shape.
- Do the stars in the sky never move?
The earth rotates on its axis and the earth circles the sun. As a result, we seem to see if the sun is circling the earth. The same is not true for stars because every time we look at the night sky for many minutes, they seem to never move from their place. How did this happen?
In fact, the stars in the sky are always moving all the time. However, we see that the stars never move from their place. What is the cause? Quoted from Astronomy Info, stars move very slowly. This very slow motion is undetectable to the human eye because of the great distance between the stars and the earth. That’s why it seems as if the stars never seem to move in the night sky.
- Why are there constellations?
You must know the names of the constellations. However, do you know the history of the appearance of these constellations?
Stars are celestial bodies that move very slowly. Coupled with its great distance from the earth and the earth’s rotation and revolution, we see that the stars in the sky never move.
In ancient times where there was no binocular technology and clocks to mark time and seasons, our ancestors observed the sky and saw star patterns with the naked eye. To make it easier for them to recognize stars in the sky that seem to never move, they created patterns of the stars that are now called constellations, such as Libra, Taurus, and Pisces.
Another interesting facts about stars
- A massive, bright star, like a ball of very hot gas called plasma, has its own gravity.
- Stars emit energy generated from nuclear fusion, which is a process that occurs in the star’s core by involving the burning of hydrogen to become helium.
- A star that is nearing the end of its life begins to convert helium into heavier chemical elements, such as carbon and oxygen, then the star begins to change color, density, mass and size.
- The star closest to Planet Earth is the Sun, which is classified as a yellow dwarf G2.
- There are about 200-400 billion stars in the Milky Way Galaxy.
- Each Galaxy contains hundreds of billions to trillions of stars and it is estimated that there are more than 100 billion Galaxies in the universe. Estimates of the number of stars in the universe are quite confusing, it is estimated that there are at least 70 sextillion or maybe 300 sextillions, if in the form of numbers maybe 300,000,000,000,000,000,000,000 and that’s just being observed.
- Stars are generally between 1 and 10 billion years old. Some stars are even thought to be closer to the age of the universe, nearly 13.8 billion years.
- Binary stars and multi-star systems of two or more stars have gravity linked, orbiting each other.
- Many stars are enormous. Red giant stars (Red supergiants) such as Betelgeuse in the constellation Orion make the Sun look small, its mass is 20 x times and its size is 1,000 x as large. Red supergiants (Hypergiants) like VY Canis Majoris are even bigger, around 1,800-2,100 x the size of the Sun’s diameter.
- Super large stars such as supergiants and hypergiants have a shorter life because they consume fuel at a faster rate than smaller stars.
- Super large stars that are approaching the end of their time to explode are known as supernova explosions that are dazzling but very deadly.
- Very large stars that explode supernovae can actually turn into black holes or black holes.
- Star matter from the supernova explosion scattered to form a nebula and the star-making process begins again.
What do you think about all facts about stars? Any Facts about stars that you like so much?