Your relationship actually has a “birth chart” of its own. This is derived by finding the midpoint between your sign and your partner’s. For example, Taylor Swift is a Sagittarius sun.

It's not as simple as: "Does my sign go with this other one?" You have to consider someone's full chart – their sun, moon and rising sign, along with other placements – to determine compatibility.

The first house is the most personal part of your birth chart. It is associated with the self. Your rising sign, or ascendant, is always in your first house. The first house is ruled by Mars ...

Beyond your primary, or sun, sign, there's a host of other signs to pay attention to within a person's birth chart. This guide focuses on the so-called "Big Three." Your "sun sign" is your anchor ...