The core of the Sun runs out of Helium. Gravity prevails and causes a new collapse of the core, triggering violent and unstable mergers. A series of 4 convulsions occur, each separated by 100,000 years. The Sun reaches the frightening brightness of 5200 times the current one. They are the gasps of the agony of our star. The external layers that have now been expelled to the outside of the internal planetary system are illuminated several times. The Sun starts to become a white dwarf gradually dispersing the remaining heat into space.