Morning Star, morning star, or Morningstar may refer to: Astronomy. Morning star, most commonly used as a name for the planet Venus when it appears in the east before sunrise. See also Venus in culture. Morning star, a name for the star Sirius, which appears in the sky just before sunrise from early July to mid-September. Morning star, a (less common) name for the planet Mercury when it appears in the east before sunrise. Heliacal rising, the astronomical occurrence when a star rises and becomes visible over the eastern horizon before sunrise, thus becoming a morning star.
https://en.wikipedia.org/wiki/Morning_Star