the brightness of a star is called it's magnitude
This is usually known as the star's MAGNITUDE.
It is called its magnitude.
Magnitude
"magnitude"
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
The measure of a star's brightness is its magnitude. A star's brightness as it appears from Earth is called its Apparent Magnitude.Star's brightness is measured by there magnitude.
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".
A nova is a star that suddenly increases in brightness.
Absolute Brightness .
The brightness of a star to an observer on Earth is called it's Apparent Magnitude. The intrinsic brightness of a star is known as it's Absolute Magnitude.
the moon light
magnitude
Apparent magnitude.
The magnitude of a star refers to its brightness.
A star who's brightness changes is called a variable star.Examples are:AlgolPolarisBetelgeuse.See related link for more information.
it's luminosity