Galileo or Aristotle?

Question

From what I know, Galileo said all objects drop at the same rate and Aristotle said heavier objects drop faster. Who is right?

Answer 1

Galileo.

On one of the Apollo missions an experiment was conducted whereby a feather and a hammer were dropped at the same time.  They fell at the same rate.  The reason this doesn't happen on earth, incidentally, is because of the resistance of the atmosphere, a problem not encountered on the moon.

Answer 2

Galileo disproved Aristotles idea that objects that are heavier drop faster with the cannon ball experiement (which one of his students performed on the tower of Pisa) he took a wooden ball and a metal ball and dropped them

Answer 3

Galileo - he proved his theory right by dropping objects from the tower at Pisa.

See:

http://en.wikipedia.org/wiki/Galileo