If you're thinking of the celestial body:
* Planet: A large celestial body that orbits a star, but doesn't emit its own light.
* Dark Matter: A hypothetical substance that doesn't interact with light, but makes up a large portion of the universe.
* Void: An empty space in the universe with very little matter.
If you're thinking of the celebrity/famous person:
* Nobody: Someone who is completely unknown or insignificant.
* Anonymous: A person whose identity is not known or revealed.
* Ordinary person: Someone who isn't famous or noteworthy.
If you're thinking of the shape:
* Circle: A closed curve with every point equidistant from the center.
* Square: A four-sided shape with four right angles.
If you're thinking of the symbol:
* Moon: A symbol often used to represent night or femininity.
* Cross: A symbol of Christianity.
It's really about the context! What do you mean by "star" in this situation?