The ____ brightness of a star is how bright a star would appear if it were 10 parsec away from Earth.

Question

Quizplus · Accepted Answer

Absolute brightness is a measure of the intrinsic brightness of a star and is defined as the brightness a star would have if it were located at a distance of 10 parsecs from Earth. The other options are not related to this concept. Relative brightness refers to the brightness of a star when compared to other stars in the same field of view. Apparent brightness is a measure of how bright a star appears from Earth, and it is affected by both the star's intrinsic brightness and its distance from Earth. Main refers to the main sequence of stars, which is a group of stars that are fusing hydrogen in their cores.

The ____ Brightness of a Star Is How Bright a Star