Alien Cells Within

The sun's heat is a result of immense mass and gravitational pressure, leading to a state of plasma, regardless of its composition. Humans start life entirely human but acquire a multitude of microorganisms, making up about 50% of our cells by the time we die. Astonishingly, only a fraction of our DNA—just 0.25%—is actually ours, with the vast majority belonging to these hitchhiking organisms.