totality
n. C1 Advanced US //toʊˈtæɫəti// UK //təʊtˈælɪti// to·tal·i·ty
n. the whole amount or the entire collection of something. In astronomy, it refers to the complete amount of light or energy coming from an object.
n. the whole or entire amount of something; in an astronomical context, the total flux or luminosity of an object.
The telescope measures the total light from the distant galaxy.
Astronomers calculated the total energy output of the supernova to understand its impact on the surrounding nebula.
The study of the totality of cosmic microwave background radiation provides critical evidence for the early conditions of the universe following the Big Bang.
From total + -ity.