The total amount of energy emitted from a celestial object is represented by:
1. Absolute brightness: This is a measure of how much light a celestial object actually emits. It is not affected by the object's distance from Earth.
Absolute brightness is important because it allows astronomers to compare the true brightness of different celestial objects regardless of their distance. It provides a standard measure of how luminous an object is.
Therefore, when considering the total amount of energy emitted from a celestial object, absolute brightness is the key factor to focus on.
