Gigantus

Gigantus was a gigantic planet of peaceful and technologically advanced people known as the Gigantians. It was attacked by the Eternals of Eyung, who were races evolved from the Celestials. The Eternals were overpowered by the Gigantians due to Gigantus’s size and massive population. So, scared that they would lose, they destroyed the planet. Its debris spread across the Universe and created objects like planets. The Sun, Earth and its Moon were also created by it.