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 ...

The film discusses Galileo's contributions to the laws of motion and gravitation, emphasizing that all objects fall at the same rate regardless of their weight. It recounts the legend of Galileo ...

Thirty-five years after Moon-walking astronauts placed special reflectors on the lunar surface, scientists have used these devices to test Albert Einstein’s general theory of relativity to ...

Physicists studying Leonardo da Vinci’s Codex Arundel have made the remarkable discovery that the Italian Renaissance man may have beaten Galileo and Isaac Newton to theorizing gravity. Leonardo’s ...