The discovery of Pluto
in 1930 coincided with the rise of fascism in Europe and
the major proliferation of organized crime in the United
States. Pluto is the ruling planet of Scorpio. Called
"the renewer", Pluto is considered to represent
the part of a person that destroys in order to renew.
A commonly used keyword for Pluto is "transformation".
Many more traditional astrologers do not use Pluto as
a ruling planet, but do use the planet for interpretation
and predictive work.
Pluto is also associated with extreme power and corruption;
It is also associated with nuclear armament, which had
its genesis in the research of that decade.