@holvek: Betelgeuse is a red supergiant in the constellation Orion located about 500–700 light-years away. It is roughly 700 times larger than the Sun and, if placed in its position, would engulf the inner planets out to about Jupiter’s orbit. Its mass is about 10–20 times that of the Sun, but it has already lost a lot of material, so its density is very low. Betelgeuse was once a hot blue star, but after exhausting its hydrogen, it expanded and cooled, becoming red. It is now in the final stage of its evolution and will eventually explode as a supernova, leaving behind either a neutron star or a black hole. #scary #astrophysics #Astronomy #facts