Mars is in the final degrees of Leo, the fixed fire sign. Uranus is in the final degrees of Taurus, the fixed earth sign. Over the weekend they will form an exact 90 degree angle known as a square. Squares in astrology are "hard" aspects. They are dynamic, meaning they make things very uncomfortable. So uncomfortable, we are forced to change something about our approach in order to manage the energies of the planets involved. While this aspect is short-lived, when looked at in the context of the other changes we have been experiencing recently, it can express in powerful ways.