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Size of Stars Stars differ in size. Some stars have diameters of only 20 km. These stars are very much smaller than the earth. Our sun is just a medium-sized star. Many stars are much larger than the sun. Astronomers classify according to size. Supergiants are the largest known stars. The star Antares has a diameter 330 times that of the sun. The sun has a diameter of 1 392 000 km. Some supergiants have diameters about 1000 times of the sun. Giants are stars with diameters from 10 to 100 times that of the sun. The star Aldebaran is a giant with a diameter about 45 times that of the sun. Medium-sized stars are about the size of the sun. Their diameters range from 139 200 km to 13 920 000 km. Sirius is a medium-sized star. White dwarfs are small stars with diameters of less than 10 000 km. The smallest white dwarf is Van Maanen's star with a diameter of 8370 km.

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What are different sizes or stars?

Stars can be classified into different sizes based on their mass and luminosity. The most common sizes are dwarf stars (like our Sun), giant stars (larger and more luminous than the Sun), and supergiant stars (the largest and most luminous stars, like Betelgeuse and Rigel). There are also intermediate sizes like subgiant stars.


Are all-stars different sizes?

like people, no 2 stars are absolutely identical so yes


Why do you think stars very in brightness?

because they are different sizes and different distances away from earth


How wide is a star in outer space?

It varies. Stars can be all different sizes!


Are stars all the same size?

No, stars come in many different sizes, masses and densities. Further, a star will change its size over its lifespan.


Do the sun has a twin?

No.., the sun is a ball of gas, and stars are balls of gas.. so basically yeah - but but that means all stars are twins at different sizes.


Is the big bang theory is the cause of the different sizes of a stars?

No, not really. The Big Bang theory has to do with the universe as a whole, not piddly little things like stars.


Why do some stars so much larger and brighter than other stars when you look into the night sky?

because the sizes and the distances away from earth are different


How do the sizes of galaxies compare to the sizes of stars?

Our own galaxy, the Milky Way consists of about 200 billion stars.


Are stars large small or medium?

They are all three. That is why some stars are called White Dwarfs (they are relatively small) and Red Giants or even Supergiants. The Sun is a middle-sized star.


What is the general size of a main sequence?

It can have many different sizes. Only the largest giants are no longer main sequence stars.


What do the different sizes of stars mean?

Hard to explain. Usually stars get bigger if they grow. Very large stars have shorter life. A very big star can end it's life as a super nova or a black hole.