luminous - emits light e.g. the sun non- luminous - does not emit light though will often reflect light e.g. the moon.
Luminous bodies are insects that give a light, such as the glow worm. Non luminous bodies do not glow o their own. it can also refer to things in space; such as planets, moons and stars
the moon is luminous
luminous glows and non-luminous doesn't
Our sun actually is a star so yes, stars are luminous. The produce huge amounts of light and heat through nuclear fusion of hydrogen.