The 0 degree in astrology is like when the native -who has a planet or the house cusp there- is standing on a threshold or at the doorstep of a room. New karma with new adventures are awaiting Once you know the foundations of astrology, you can learn more advanced topics such as the secrets of the degrees in order to read your natal chart more accurately and precisely. The 0 degree in astrology means that a planet or a house cusp is at the 0 degrees of a sign. The meaning of the critical degrees in astrology North Node and South Node in the 12 Zodiac Signs.