Visible as tiny points of light in the night sky, stars have been important to mankind since the dawn of consciousness. Modern physics declares that each star is an enormous nuclear fireball like our Sun – some, such as Antares, being vastly more massive than the Sun – but esoterically each star is considered to be the body of a conscious cosmic being (angel, or deva). Another tradition, dating at least to Plato, holds that each soul is assigned to a star, and after death returns to that star, or if having led an unjust life, must reincarnate on Earth. Certain star groupings, such as Orion, Pegasus, etc., are called constellations and visible stars of sufficient magnitude have a powerful effect on life on Earth. These "Fixed Stars" appear to be stationary, relative to the Earth, whilst "Wandering Stars" (or Planets) appear to move across the zodiac. To distinguish, Fixed Stars appear to twinkle in the sky, but Planets shine with an unwavering gleam. More on Fixed Stars.