Assertion: star | /r/HasAspect | luminosity
Facets:
Source sentences:
text: A star with four times the radiative power of the sun has a luminosity of
text: A star like Deneb, for example, has a luminosity around 200,000 L ⊙ , a spectral type of A2, and an effective temperature around 8,500 K, meaning it has a radius around 203 R ☉ (1.41×1011 m).