Moon sign is considered to be one of the most important factors in astrology. However, moon sign is of significant importance also in tropical astrology or Tropical astrology. Your tropical astrology moon sign is determined based on the position of the moon in any of the tropical astrological houses.Tropical astrology moon sign compatibility is thought to be more significant than sun sign compatibility. Sun sign reflects the outer personality of an individual, while the moon sign reveals the natural habits and instinctive tendencies of the person. Compatibility is associated more with the heart and inner habits than the personality of an individual. So, to check how well you and your partner gel with each other, you can get a free tropical astrology moon sign compatibility.