kadir angolul

luminosity [luminosities]▼(rate at which a star radiates energy)
noun
[UK: ˌluː.mɪ.ˈnɒ.sɪ.ti] [US: ˌluː.mɪ.ˈnɒ.sɪ.ti]

magnitude [magnitudes]▼(apparent brighness of a star)
noun
[UK: ˈmæɡ.nɪ.tjuːd] [US: ˈmæɡ.nə.ˌtuːd]