I have usually seen them quoted in kilometers.
Becuase nebulae tell us how stars get formed so the composition, density and size of a nebulae cloud says a lot about its age, likelihood of stars forming and the type of stars that might form.
Among stars supporting progressive fusion reactions, the Sun is below average in size. However, astronomers estimate that as many as 75% of all stars in the visible universe are red dwarfs, which are considerably smaller than the Sun. As it ages, the Sun will eventually lose luminosity but expand in size. Over billions of years, it will become a red giant star, and when that phase ends, its core will form a white dwarf.
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.
it is classified by thier size because stars are big and hot. the temperature is may up to 100,000,000 hotter than other stars
Some stars are bigger than the planet like the sun but some are small. The size varies.
Because they cannot visit stars and measure their sizes with a tape measure!
the sun
The measurement service that the Dansko 38 provides is the measurement of shoes and apparel. They measure shoe size and they measure chest and waist for clothing.
to check the measure size
The most important measure of the size of a river is the "size of its watershed"
mL=cca milliliter is the same measurement as a cubic centimeter.Liters measure volume and centimeters measure dimensions.
astronomers plan to find the color, size ,temperatures, brightness, and also composition and radiation by stone a student at Robert Mitchell school 6th grade
One can measure paper size using a few different measurement systems. The main determination for the measuring of paper size is inches and millimeters. The organization for international standards has also set the paper size at such measurement specifics as the A series and C series.
Take a measurement, measure arround the widest part of the hip and then measure arround also the waist, take a note and bring it with you when you go to the panties store. Match these measurement with size tag on panties you like.
You can not measure my weight! Who did measure the size of earth?
Its radius in Kilometres would be appropriate.
Becuase nebulae tell us how stars get formed so the composition, density and size of a nebulae cloud says a lot about its age, likelihood of stars forming and the type of stars that might form.