If you drop a light object and a heavy object from a tower, which one reaches the ground first? As you may recall from high school physics, this is a trick question. Neglecting air resistance, they ...

Don’t try this experiment in the Piazza del Duomo. By Randall Munroe Why, when I drop two bobsleds of unequal weights off the Leaning Tower of Pisa, do they hit the ground at the same time, but when I ...

TWO hundred and ninety-eight years ago to-day (November 5, 1581) Galileo Galilei, then a boy between seventeen and eighteen, matriculated as a medical student in the University of Pisa. At that time ...

Alex Chadwick talks Ira Flatow, host of NPR's Talk of the Nation Science Friday, about new examinations of the theories of Galileo and Isaac Newton relating to gravity. This is DAY TO DAY. I'm Alex ...

THERE are few men of science whose lives offer so much of picturesqueness and interest to the popular mind as that of Galileo. Marvelous genius though he was, he lived and did his great works among ...