Luminosity

Luminosity is the total amount of energy emitted by a star, galaxy, or other astronomical object per unit time. It is a measure of the object's brightness and is typically expressed in terms of the luminosity of the Sun, which is used as a reference point. Luminosity is an important parameter in astronomy as it provides information about the size, age, and evolution of celestial objects. It is calculated by multiplying the object's surface area by its temperature and the fourth power of its radius. In space and astronautical engineering, luminosity is used to study the behavior of stars and galaxies, and to design instruments and spacecraft for observing them.

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Luminosity

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