ᴜɴɪᴠᴇʀsɪᴀ on Instagram: "🌟 Betelgeuse is one of the most famous stars in our night sky. It is a red supergiant in the Orion constellation and it is reaching the end of its life. Scientists believe Betelgeuse could go supernova any time between tomorrow and one hundred thousand years from now. This may sound like a huge range but on cosmic timescales it is extremely short. 💥 A supernova happens when a massive star runs out of fuel and collapses under its own gravity. In that moment the star rel