* Rigel: A blue supergiant star, it is the seventh brightest star in the night sky and the brightest star in the constellation Orion.

* Betelgeuse: A red supergiant star, it is the tenth brightest star in the night sky and the second brightest star in Orion.

While Betelgeuse is a larger and more massive star than Rigel, Rigel is significantly hotter and therefore emits more light.