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The radius of a star is a measure of its size, typically expressed in units such as solar radii, where one solar radius is the radius of the Sun, approximately 696,340 kilometers (about 432,690 miles). The radius can vary widely among different types of stars, ranging from less than a third of the Sun's radius for small red dwarfs to more than 1,000 times the Sun's radius for massive supergiants. The radius is determined through methods such as observing the star's brightness, temperature, and spectral characteristics.
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Which star has a radius of 10 km?
That's the approximate radius of a neutron star, a.k.a. a pulsar.
What is the surface area of a star?
Roughly 12.57 times the square of its radius.
What is a hypergiant's radius?
A red hypergiant star could have a radius of up to 2000 solar radii or more, where one solar radius is the radius of our sun. If at the centre of our solarsystem, a hypergiant could extend out as far as Jupiter or more.
What is the core radius?
The core radius refers to the radius of the central region of a structure, such as a star, planet, or fiber. In astrophysics, it often denotes the size of the dense, central part of a star where nuclear fusion occurs. In materials science, it can describe the radius of the core of a fiber optic cable or composite material. The specific definition can vary depending on the context in which it is used.
What star has the largest radius?
The star with the largest radius known is UY Scuti, a red supergiant located in the constellation Scutum. Its radius is estimated to be about 1,700 times that of the Sun, making it one of the largest stars in terms of volume. However, measurements can vary, and other candidates like VY Canis Majoris have also been considered for this title. These massive stars are in the late stages of stellar evolution and have expanded significantly.
In what unit do I measure the radius of a star?
You can use kilometers. Or you can compare it to the radius of our Sun, and say, for example, "This star has 600 times the diameter [or radius] of our Sun."
Which star has a radius of 10 km?
That's the approximate radius of a neutron star, a.k.a. a pulsar.
What is the radius of a G2III star?
The radius of a G2III star can vary, but on average it is around 10 times the radius of the Sun. This class of star is typically larger and brighter than the Sun, but smaller than supergiant stars.
Temperature and radius of merak star?
the distances of the merak star
How many times larger is the sun than a star that has 0.1 solar radius?
The sun has a radius of approximately 696,340 kilometers, while a star with 0.1 solar radius would have a radius of 69,634 kilometers. To calculate how many times larger the sun is, we divide the sun's radius by the smaller star's radius: 696,340 km / 69,634 km = 10. Therefore, the sun is 10 times larger than a star with 0.1 solar radius.
What is the radius of the star Rigel?
Rigel has a radius of about 78 solar radii or 0.363 AU.
Why does the luminosity of the star depend on both its radius and its temperature?
The bigger the star's radius, the greater its surface area which emits the light. The bigger the temperature, the more luminous is the light the star is emitting.
How big is barnards star?
It has a radius of between 0.15 and 0.20 that of our Sun. The Sun has a radius of about 696,000 km, so Barnard's Star has a radius of between 104,400 km and 139,200. Average about 121,800 km
What is the area of a star?
It's (4 pi) times (the star's radius)2.
How wide is alnitak?
Alnitak is a multiple star: Alnitak Aa has a radius which is 20 time the sun's radius.
How much bigger is Pistol Star than the Sun?
Its radius is estimated to be about 300 times the radius of the Sun.
What is the radius of a red giant star?
A red giant can have a radius of 50 million to 500 million kilometres.
