There must be a spark of opposites to birth new life. This is represented by the equinox, a time of equal day and night creating a whole new cycle of life.
The fears we encounter are much like the villains and monsters that Persephone befriends in the underworld. The illusion of Venus orbiting the Sun backwards is akin to the illusions we harbor around love and the things we value.
Aries asks that we open our eyes and pay attention to where we may be slipping into some co-dependent situations, and be aware of the unhealthiness that is rising because of it. Also ensure that you don't settle back down in the mud of what is comfortable, out of fear of the unknown.