luminosity
Quasar luminosity was the most energetic things in the universe over 13 billion years ago...
Technical definition
a measure of how much energy is emitted per unit time per unit surface area by an object or a light source.
Quasar luminosity was the most energetic things in the universe over 13 billion years ago...
a measure of how much energy is emitted per unit time per unit surface area by an object or a light source.