AnswersDriveWhat are stars made of? Basically, stars are big exploding balls of gas, mostly hydrogen and helium. Our nearest star, the Sun, is so hot that the huge amount of hydrogen is undergoing a constant star-wide nuclear reaction, like in a hydrogen bomb.
Why are the stars in the sky?
Due to their great distance from the Earth, all stars except the Sun appear to the unaided eye as shining points in the night sky that twinkle because of the effect of the Earth's atmosphere. The Sun is also a star, but it is close enough to the Earth to appear as a disk instead, and to provide daylight.
Why is the sun is considered a star?
The Sun is a as a G2V type star, a yellow dwarf and a main sequence star. Stars are classified by their spectra (the elements that they absorb) and their temperature. There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M.
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How long a star can live?
Generally, the more massive the star, the faster it burns up its fuel supply, and the shorter its life. The most massive stars can burn out and explode in a supernova after only a few million years of fusion. A star with a mass like the Sun, on the other hand, can continue fusing hydrogen for about 10 billion years.
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What exactly is a shooting star?
Answer: A "falling star" or a "shooting star" has nothing at all to do with a star! These amazing streaks of light you can sometimes see in the night sky are caused by tiny bits of dust and rock called meteoroids falling into the Earth's atmosphere and burning up.
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What is the chemical makeup of most stars?
The Sun is a main sequence star and its chemical composition mainly consists of hydrogen and helium with trace amounts of other elements.
- Hydrogen. Hydrogen is the most abundant element in the universe and makes up three-quarters of all matter.
- Helium.
- Carbon.
- Oxygen and Other Trace Elements.
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How hot are the stars?
The color depends on how hot the star is. A red star is the coolest, but still is about 5,000° Fahrenheit! Our sun is yellowish-white and the surface is about 10,000° Fahrenheit. The hottest stars are blue, and can be as hot as 200,000,000° Fahrenheit at their core!
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How do you draw a star?
Method 1 Drawing a 5-Pointed Star
- to Draw a Star. Draw an upside down "V." Begin at the lower left side of your drawing, come up to a point and bring your pencil down and to the right.
- to Draw a Star. Draw a straight line at an upward angle to the left.
- to Draw a Star.
- to Draw a Star.
- to Draw a Star.
- to Draw a Star.
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How many stars can you see at night?
The number of stars that you can see on a clear (moonless) night in a dark area (far away from city lights) is about 2000. Basically, the darker the sky, the more stars you can see. Moonlight brightens the night sky and reduces the number of stars you can see.
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How stars are formed step by step?
Steps to the formation of stars and planets:
- Clouds of gas form within galaxies.
- Formation of structure within the gas clouds, due to "turbulence" and activity of new stars.
- Random turbulent processes lead to regions dense enough to collapse under their own weight, in spite of a hostile environment.
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What is the sun made out of?
The Sun is a huge, glowing sphere of hot gas. Most of this gas is hydrogen (about 70%) and helium (about 28%). Carbon, nitrogen and oxygen make up 1.5% and the other 0.5% is made up of small amounts of many other elements such as neon, iron, silicon, magnesium and sulfur.
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Where the stars are born?
Star birth. Like people, stars are born, they grow old and they die. Their birth places are huge, cold clouds of gas and dust, known as 'nebulas'. The most famous of these is the Orion nebula, which is just visible with the unaided eye.
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Which is the nearest star to the Earth?
The two main stars are Alpha Centauri A and Alpha Centauri B, which form a binary pair. They are an average of 4.3 light-years from Earth. The third star is Proxima Centauri. It is about 4.22 light-years from Earth and is the closest star other than the sun.
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What is the What is a star?
A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. Nuclear fusion reactions in its core support the star against gravity and produce photons and heat, as well as small amounts of heavier elements. The Sun is the closest star to Earth.
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What is the scientific definition of a star?
A huge ball of gas held together by gravity. The central core of a star is extremely hot and produces energy. Some of this energy is released as visible light, which makes the star glow. Our Sun, the center of our solar system, is a yellow star of average temperature and size.
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What are the stars made out of?
What are stars made of? Basically, stars are big exploding balls of gas, mostly hydrogen and helium. Our nearest star, the Sun, is so hot that the huge amount of hydrogen is undergoing a constant star-wide nuclear reaction, like in a hydrogen bomb.
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What are the stars in the sky?
A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity. The nearest star to Earth is the Sun. However, most of the stars in the Universe, including all stars outside our galaxy, the Milky Way, are invisible to the naked eye from Earth.
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Is every star a sun?
A star is called a "sun" if it is the center of a planetary system. A large number of planets have been found that orbit other stars, thus making these stars officially "suns." Chances are that a large percentage of the stars in the galaxy also have planets orbiting them, which would make them suns as well.
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What kind of star is the sun?
Our sun is a dwarf star. Yellow dwarfs are small, main sequence stars. The Sun is a yellow dwarf. A red dwarf is a small, cool, very faint, main sequence star whose surface temperature is under about 4,000 K. Red dwarfs are the most common type of star.
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How a star is born?
A star is born when atoms of light elements are squeezed under enough pressure for their nuclei to undergo fusion. All stars are the result of a balance of forces: the force of gravity compresses atoms in interstellar gas until the fusion reactions begin.
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Are all the stars planets?
Stars make their own light, just like our sun (the sun is a star — the closest star to Earth). But the stars are very, very far away from our solar system so they appear to be very tiny to us, even though up close they are large. The planets are much closer, inside our solar system.
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How does a star dies?
Star death. 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.
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What is the difference between a star and a planet?
The Earth is an example of a planet and orbits the sun, which is a star. A star is usually defined as a body of gas which is large enough and dense enough that the heat and crushing pressure at its center produces nuclear fusion. Our solar system consists of the sun, the Earth and eight other planets.