Stellar luminosity

Stellar luminosity refers to the total amount of energy a star emits into space per unit time, essentially measuring how bright the star would appear if viewed from a standard distance. It's a key property of stars, indicating their size, temperature, and stage in life. Luminosity is often compared to the Sun's brightness, where one solar luminosity (denoted as L☉) serves as a reference point. A star's luminosity can give insights into its internal processes, composition, and potential impact on surrounding planets, including their ability to support life.