Æstrolos
A closed species by LuzuriAestrolos are celestial spirits, born from a stellar explosion. Each is as unique as all that the universe contains. They do not have any need such as hunger, thirst, or fatigue, but Aestrolos do need to absorb galaxy dust (which occurs by stellar explosions) or interstellar clouds of dust to sustain their life energy. Aestrolos can exist for a long time, but they aren't immortal. They can approximately live up to 10 billion years. Once they have reached the old age, they will turn in to galaxy dust.