That is called "absolute brightness" or "absolute magnitude". It is defined as how bright a star would look at a standard distance (10 parsec, to be precise). The brightness of stars can vary a lot; some stars (supergiants) are millions of times as bright as our Sun, others (red dwarves) are thousands of times less bright. (Our Sun is in the top 10 percentile, though.)
Two stars revolving around one another (around their center of mass, to be precise) are called a "binary star". There is no special name for the case that the brightness is unequal; this is actually the usual case.
Probably because they are the closet to us!
A "standard candle" in astronomy is an object whose luminosity (its true brightness, not just how bright it seems to us) can be estimated, based on characteristics of that type of object. Then its distance can be estimated from its "apparent magnitude". The stars called "Cepheid variables" are a good example. The rate at which their brightness varies is closely linked to their luminosity.
The brightness as seen from Earth is called the "apparent magnitude".The real brightness (defined as the apparent brightness, as seen from a standard distance) is called the "absolute magnitude".
The brightness of a star depends on its temperature, size and distance from the earth. The measure of a star's brightness is called its magnitude. Bright stars are first magnitude stars. Second magnitude stars are dimmer. The larger the magnitude number, the dimmer is the star.The magnitude of stars may be apparent or absolute.
No. Stars vary greatly in size and brightness.
Variable stars and main sequence stars can have similar brightness. Variable stars, like Cepheid variables, can fluctuate in brightness over time, while main sequence stars maintain a relatively stable brightness due to their fusion processes.
A star's brightness is known as its magnitude. Stars with lower magnitude numbers are brighter than stars with a higher magnitude number.
Temperature of stars is indicated by their color, with blue stars being hotter than red stars. Brightness of stars is indicated by their luminosity, which is how much light a star emits.
no
Magnitude.
The brightness is very similar to the temperature, the brightness relies on the temperature
Size and temperature determine the brightness of stars.
the moon can vary its brightness and the pink elephant called aphadophalis
its color :)
color
DONNY