The planet Pluto was discovered in a similarly hidden way as the planet Neptune. Percival Lowell looked for a planet outside of Neptune between 1905 and 1916, but Pluto was not actually discovered until 1930. Pluto is smaller than the Earth with an orbit of 248 years. For about the last 30 years Pluto was actually inside the orbit of Neptune, but now it is moving away and in 2107 will be nearly 50 times as far away from the sun as the Earth. Thus it was in Scorpio for only 12 years but in Taurus for more than 30.
Pluto as the higher octave of Mars represents psychic or spiritual energy. Pluto is the Roman name of the Greek god of death and the underworld, Hades, thus relating to death and renewal, regeneration, and transformation. Pluto also correlates with the discovery of nuclear energy which is so lethal, and nuclear weapons which are so much more explosive than chemical bombs.
The elements Uranium, Neptunium, and Plutonium have the numbers 92, 93, and 94, respectively which add up to 11, 12, and 13, and Uranus rules the 11th sign, Neptune the 12th, and 13 is the number of death.
As a watery planet Pluto's rulership has been assigned to Scorpio the sign of death and intuitive power. I have suggested that Pluto is exalted in Virgo.
Pluto was in Aries from 1822 to 1852 stimulating the beginning of much psychic and paranormal activity.
Pluto was in Taurus where it is in detriment from 1852 to 1883 during which time finances went through transformations including the challenge of Marx's theories.
Pluto was in Gemini from 1883 to 1914 stimulating transformations in the field of communications through telephones, newspapers, photography, films, and telepathy.
Pluto was in Cancer from 1914 to 1938 leading to transformations in loyalties and the general public from world war to the underworld life of the twenties through the depression and to a second world war. It stimulates the subconscious, psychism, instincts, emotional tenacity, and protectiveness.
Pluto was in Leo from 1938 to 1957 causing transformations in leadership, sports, and the entertainment industries. This generation tends to have intense will, confidence, power, pride, creativity, and dramatic ability.
Pluto was in Virgo at the end of 1956 and from August 1957 to October 1971 and from April to July 1972 stimulating science, technology, employment, transformations in health care such as organ transplants, and regenerative healing. This generation quests for perfection and purity, is being transformed by technology, and seeks collective improvements.
Pluto was in Libra from October 1971 to November 1983 and from May to August 1984 stimulating transformations in law, diplomacy, marriage, music, and the arts. This generation can die and be reborn in relationships with intense desires for justice, balance, and harmony.
Pluto was in Scorpio where it is dignified from November 1983 to November 1995 stimulating occultism, transformations in sexuality, mysticism, and violence from personal murders to the nuclear arms race. This generation is psychic or interested in the occult, mysteries, death, and rebirth. Sexuality was tempered by the AIDS crisis and the fear of death.
Pluto is in Sagittarius from November 1995 through most of 2009 stimulating transformations in religion, philosophy, world affairs, higher education, and publishing such as the World Wide Web. This generation is adventurous, free-thinking, expansive and intensely interested in world affairs and philosophy.
At this time it would be merely speculation to say what Pluto will be like in the signs Capricorn, Aquarius, and Pisces, but as the last three universal signs, there could be transformations through large social and collective movements.
Pluto in the first house stimulates active experiencing, courage, and daring. One's personality may go through transformations and renewals by self regeneration.
Pluto in the second house intensifies the finances and personal values and possessions. One's financial situation may be explosive at times, and one's resources may be destroyed and renewed.
Pluto in the third house intensifies the learning mind, stimulating an interest in psychic phenomena, mental telepathy, and underworld communications.
Pluto in the fourth house brings transformations to the home life, loyalties, roots, and intuitive feelings.
Pluto in the fifth house transforms happiness, children, and creativity. Risk-taking may be explosive and dramatic instincts intense.
Pluto in the sixth house mobilizes resources through work, employment, and self-improvement. Intense crises may lead to self-examination through health problems or regenerative and spiritual healing.
Pluto in the seventh house leads to intense and possibly explosive relationships involving psychic elements. Relationship can be a deep and transformative experience.
Pluto in the eighth house is dignified giving intense spiritual and psychic energies for transmutation and rebirth. One tends to relate to spiritual forces or be interested in the occult or mysteries.
Pluto in the ninth house expands awareness through higher knowledge, philosophy, travel, and world issues. One tends to be adventurous and inspirational.
Pluto in the tenth house can bring about transformations in one's career or reputation. One may work with collective energies for practical goals.
Pluto in the eleventh house offers intense group energies and friendships, transcendental wishes and hopes, and an intense desire to improve society.
Pluto in the twelfth house intensifies subconscious and mystical tendencies. One may be self-destructive and then reborn into a higher awareness. One may be intensely involved in social rehabilitation or society's underworld.