My trivia and facts on the Universe. Asteroids, black holes, distances, galaxies, light, Mars rovers, Moon landings, stars, Titan, Voyager program, and other Universe trivia and facts.
Thursday, May 6, 2010
Red giant
A red giant is a very bright giant star in its late phase of evolution, when no hydrogen remains in the core and thermonuclear fusion of hydrogen happens in a shell surrounding the core. A red giant is yellow-orange to red in color.
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