Labels:text | screenshot | font | number OCR: FACT FILE THE IRON CORE of a supergiant .................................. reaches temperatures between 3 and 5 billion ℃ (5.4 and 9 billion "F). The largest-known supergiant, Betelgeuse (which lies in the constellation of Orion), has a diameter about 400 times that of the Sun and a volume that could encompass 64 million suns. The most massive supergiants - those with about 100 times the Sun's mass - are about a million times more luminous than the Sun.
