What Is a Star? By NIKITA

Picture it: You look outside the window and see tons of stars and you might even have tried to count them, but have you ever wondered what a star really is? Have you ever thought about what they do? What actually is a star? I’ve been asking myself that same question every night.

In the old days people didn’t know what stars were so they thought they were holes in the sky. According to my research, our sun is a star and we are in the perfect position - not so far away that we will freeze from not getting enough warmth from this burning ball of death, but not so close that the burning ball of death will burn us up. Some of my favorite questions to ask were, how do stars form? How big is our star? How does a star die? Oh and this is going to make everything easier if you didn’t know, but a sun is a star.

Firstly, stars formed as huge clouds of gas and dust. All stars are big exploding balls of gas, mostly hydrogen and helium. If you don’t know know what hydrogen and helium are, they are two substances in science. Our sun has a huge amount of hydrogen with a constant nuclear reaction stars(sun) are so large and have so much matter in them that it will take billions of years for the explosion to use all the energy of the star. Stars form inside relatively dense concentrations of gas and dust.

Secondly, stars are too big to measure their diameter. Our Sun is 1.3 million times the volume(mass) of earth. Our star is 695,700 km. It may be the biggest thing in this neighbourhood, but the sun is just average compared to other stars. Some stars(sun) can be about 200,000,000 (200 million) degrees inside. Depending on how close it is to the core of the star it determines how hot it is.

Most stars take millions of years to die. When a star like the Sun has burned all of its hydrogen fuel, it expands to become a red giant. This may be millions of kilometres across. Big enough to swallow the planets Mercury and Venus. Dead stars are eight times the mass of the Sun. When they run out of fuel they swell into red supergiants, they are huge stars. They try to keep alive by burning different fuels, but this only works for a few million years. Then it blows apart in a huge explosion. In addition, a star’s life expectancy depends on its mass. Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life san. If the star is very small, with a mass only a tenth that of the Sun, it can keep fusing hydrogen for up to a trillion years, longer than the current age of the universe. Another way for a star to die is it to use up all it’s helium and hydrogen.

Like William Shakespeare said “When he shall die, Take him and cut him out in little stars, And he will make the face of heaven so fine that all the world will be in love with night and pay no worship to the garish sun.” Next time you look at a star you’re going to know what its is.

Credits:

Created with images by jimkster - "Galaxies" • Bitterjug - "Star" • skeeze - "milky way andromeda stars" • fontplaydotcom - "cellphone2" • Alex Bellink - "We're all stars" • condesign - "poinsettia star wood wooden structure" • vickysandoval22 - "DIY Photo Star" • stephendotexe - "Yosemite Star Trails" • ddouk - "sunset sea sun" • kevin dooley - "Starred"

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