Common star symbols include the asterisk, Star of David and the Pentacle. An asterisk is found on a keyboard as the shift of the "8" key. It often denotes an omission of text or a footnote at the bottom of the page.
The Star of David is a six-sided star made by intertwining two equilateral triangles. This type of symbol was common in the Middle East and North Africa. The Star of David was not associated with Jews until the late 1800s and the Zionist movement.
A Pentacle is a five-pointed star known as the "star of life" to Wiccans. Four of the points connote the four cardinals directions, plus the fifth point is for the spirit of the person invoking the Pentacle symbol.