The photosphere.
The star Sirius is the brightest star visible from the earth. Sirius is in the Canis Major constelation, and is therefore often refered to as "the Dog Star"
The brightest star as seen from Earth is the sun. The brightest star in the night sky is Sirius.
Delta Scuti is a giant star. It is part of the Scutum constellation. It is also known as a variable star because its brightness as seen from earth fluctuates.
The brightest star in the night sky as seen from Earth is Sirius, also known as the "Dog Star." It is part of the Canis Major constellation and is located relatively close to Earth, which contributes to its brightness.
Apparent
Distance from Earth, size of star, and temperature of star.
Distance from Earth, size of star, and temperature of star.
A variable star is a star whose brightness as seen from Earth that fluctuates.
the moon.
If it is close enough then it can be seen
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 variable star is a star whose brightness as seen from Earth that fluctuates.