The Aries full moon on October 20, 2021, is opposite Mars and square Pluto. So the spiritual meaning of this challenging full moon October 2021 astrology relates to controlling an intense desire for power and control in order to achieve your passionate desires.
The October 2021 full moon also aligns with a positive fixed star that gives preparedness, steadiness, determination, and final success. So the only things standing in your way of success are the ruthlessness, jealousy, and aggression of Mars square Pluto.
The October 20 full moon at 27°26′ Aries is opposite Mars and square Pluto. The aspect orbs are not that close but they are still a strong and the most important influence on the full moon. This is because the orb for Mars square Pluto is only one degree.
Full Moon Meaning
Sun opposite Moon brings your home, family, and intimate relationships into sharper focus for the following two weeks of this moon phase. Opposing forces such as work versus home, or what you need versus what you want, create inner tension and external pressures. This can lead to conflict and crises that drain your energy.
The lunar qualities of emotions and instincts reach their peak at a full moon. So use your increased emotional strength and intuition to overcome any relationship challenges. Subconscious awareness allows for an impartial and balanced look at your personal relationships. You will clearly see any relationship dynamics or negative feelings causing disharmony.
Full Moon Aspect
Full moon opposite Mars gives a strong urge to have your passionate desires fulfilled. But moodiness, impulsiveness, and anger can get in the way of your goals. There is a risk of minor irritations turning into arguments, abuse, or conflict that hurts yourself or others.
To avoid hostilities you can channel your energy toward hard work and competition. This is a good time to fight for a just cause or defend the vulnerable. If you are in danger, this full moon may trigger a fight or flight response and an opportunity to leave a dangerous relationship or environment.
Full moon square Pluto can lead to compulsive and destructive behavior as deeply buried feelings are exposed. Emotional power struggles are possible and may become quite ruthless. Jealousy, manipulation, guilt-tripping, bullying, sexual abuse, or domestic violence may be involved.
Although difficult to control, conscious awareness of such intense emotions or reactions can be healing, with opportunities to transform and evolve. This is a good time to eliminate bigotry, racism, fears and phobias, addiction, sexual problems, and destructive relationships.
Mars square Pluto gives an intense desire to gain power and control, and compete to win. But ruthlessness, jealousy, or underhand tactics will lead to power struggles and confrontations. Still, it is not wise to suppress your strong urge to succeed. Internalizing this potent energy could result in aggression from others. Someone may try to dominate you or challenge your ego or position at work.
So to avoid being a victim, it is better to strive for success but do so in a careful way. Also, try not to be overly assertive or make others feel threatened. This especially applies to superiors or those in a position of authority. This is not the time to be starting fights and making enemies.
Full Moon October 2021 Fixed Star
Full Moon October 2021 is in the Sign of Aries. But as the star map below shows, it is actually in the Constellation of Pisces. This discrepancy is due to the precession of the equinoxes. It has moved the Sun Signs almost a whole Sign out of alignment with the Constellations from which they were named over 2000 years ago.
The full moon at 27°26′ Aries most closely aligns with Eta Piscium, Alpherg, at 27°07′ Aries. It is the only star in constellation Piscies that is used in astrology.
Fixed star Alpherg gives preparedness, steadiness, determination and final success. It is of the nature of Saturn and Jupiter (dignified, pious, conservative, acquisitive, retentive).  It rules the pineal gland and is related to spiritual development. 
This is a star of mysteries Those with it well placed have ready access to, and understanding of, what the Church loves to call ‘The Mysteries’. Let those who have Alpherg poorly aspected beware of the Genie that may emerge if they uncork it by mere dabbling for occult kicks. Nothing that happens with Saturn-Jupiter conjunction is on a small scale, neither enlightening revelation nor pathological obsession with the past. 
Full Moon October 2021 Summary
The major influence of the October 20 full moon is Mars square Pluto. This is a challenging aspect that creates a very competitive environment. It can make you intense in your desire to succeed to the extent of becoming ruthless and aggressive.
Fixed star Alpherg is like the most positive manifestation of Mars square Pluto. It gives preparedness, steadiness, determination, and final success. It also gives the spiritual development to transform the intense energy of Mars square Pluto into determination and perseverance to achieve your most passionate desires.
The influence of the October 20 full moon combines with that of the October 6 new moon. That new moon was conjunct Mars and continues to bring energy, passion and initiative, but also anger, violence and revenge. The effects of the October 20 full moon lasts for two weeks up to the November 4 new moon.
If the full moon October 2021 astrology directly impacts your horoscope decan you can read about it in your monthly horoscope. For more detail about how it affects your natal chart see full moon transits.
- Previous Moon Phase: New Moon October 6, 2021
- Next Moon Phase: New Moon November 4, 2021
- 2021 Moon Phases Calendar
Full Moon October 2021 Times and Dates
- Los Angeles – October 20, 7:56 am
- New York – October 20, 10:56 am
- London – October 20, 3:56 pm
- Delhi – October 20, 8:26 pm
- Sydney – October 21, 1:56 am
**By Jamie Partridge