* Betelgeuse is a red supergiant: It's a star in the later stages of its life, having exhausted its hydrogen fuel. This has caused it to expand dramatically.
* Size comparison: Betelgeuse is estimated to be about 700 to 900 times the Sun's diameter. If it were placed at the center of our solar system, it would engulf the orbits of Mercury, Venus, Earth, Mars, and even Jupiter.
* Volume: Due to its massive size, Betelgeuse has a volume that is millions of times greater than the Sun.
While Betelgeuse is a giant star, it's important to note that it's nowhere near the largest known stars. There are hypergiants and other massive stars that dwarf Betelgeuse in size.
