That all bodies-no matter what the shape or weight-would fall at the same speed
galileo galilei and galileo are the same person (that doesn't make sense.)
Newton explained his theory
Galileo
Galileo theory
It's called the heliocentric theory (helios is sun) but it was not a fully fledged theory until well after Galileo's time.
Galileo Humpkins.
Galileo believed in the truth of the copernican theory, which stated that the sun was the center of the universe.
Galileo dropped it from a tower in then it feel at the same rate
He went against the Aristotelian theory and he defended the Copernican theory.
The principle of science that caused Galileo to not discard his erroneous theory of the tides was making careful observations. Galileo Galilei lived between 1564 and 1642.
Galileo did not propose a heliocentric theory, he agreed with Copernicus and his heliocentric theory. The Catholic church, at the time, disagreed and they held a huge amount of power and put him on trial.
Galileo Galile wrote "the Theory of Relativity", and Einstein wrote the General theory of relativity and the special theory of relativity.