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A star that changes in brightness. Variable stars fall into two general categories: intrinsic variables, in which physical changes, such as pulsations or eruptions, are involved, and extrinsic variables, in which the light output fluctuates due to eclipses or stellar rotation. Further classification is complex; originally it was based on a star's light curve, amplitude, and periodicity (or lack of it), but is now more closely linked to the physical processes underlying the variability. The standard reference for classification is the General Catalogue of Variable Stars.
What else can I help you with?
Is our sun a red giant?
No. The sun is a yellow main sequence star, sometimes called a yellow dwarf. The term is a bit counterintuitive, as a yellow dwarf is a bit larger than the average star, but still far smaller than a red giant.
What is the sun called before it becomes a red giant?
A main sequence star with a spectral calss of G2V or yellow dwarf.
What type of star is Markab?
Markab is a type of star known as a giant star. It is classified as a type G8 III, indicating that it is a yellow giant star. Markab is located in the constellation Pegasus and is one of the brightest stars in the night sky.
The star Urodelus is what color?
yellow. from what I've read, it's a yellow giant
What is the color size and apparent brightness of polaris?
The main star in the Polaris system, Polaris Aa, is a yellow super-giant, with a radius which is 46 +/- 3 times that of the sun. Its apparent magnitude is 1.98 but it is a Cepheid variable.
Which is earths sun a yellow star or a red giant?
A yellow star. The Sun is definitely not a red giant; if it were to swell to the size of a red giant (like Antares, for example), our Earth would end up inside the Sun.
What do you call a female giant panda?
Female giant pandas are called sows. Male giant pandas are called boars. The baby giant pandas are called cubs.
What are giant anteaters young called?
what are giant anteaters babies called
Is Betelgeuse a medium yellow star?
No, Betelgeuse is a red giant.
Why are giant pandas called giant?
Giant Pandas are called Giant because they are born the size of a butterstick but grow to about x100 that size when they are fully grown.
What are giant panda females called?
The Female Giant Panda is called a sow
Does the yellow star become a red giant after it is done being a yellow star?
Most yellow stars do. The Sun is expected to follow this progression.
