It may already be dead. When Betelgeuse goes off as a supernova, it will be a sight to behold. Keep in mind that typical supernova can outshine entire galaxies of over a hundred billion stars.

Researchers link two ancient mass extinctions to nearby supernova explosions, which may have damaged Earth's atmosphere and ...

This figure shows measurements of Betelgeuse's brightness from different observatories from late 2018 to present. The blue and green points represent data from ground-based observatories.

When Betelgeuse, a red supergiant star in the constellation Orion, eventually goes supernova—likely within the next 100,000 years—the night sky will light up as if a second sun appeared ...

However this may not be the case for much longer. Back in 2019, NASA noted that Betelgeuse's brightness dimmed by about 60%, leading some scientists to wonder if it was entering a 'pre-supernova' ...