Betelgeuse is one of the brightest stars in the night sky and is part of the constellation Orion. It is a red supergiant STAR located approximately 640 light years away from Earth. Betelgeuse is one of the most recognizable stars in the night sky due to its bright orange-red hue and its position in the constellation Orion. It is also one of the largest stars known, with a diameter estimated to be up to 1, 400 times that of the Sun.