Talk "Gravity, a familiar but very unknown force"

We will talk in a relaxed way about the force of gravity, starting with Galileo and his experiment with the Leaning Tower of Pisa, Isaac Newton and ending with Einstein. Can there be anything left unanswered that the great sage Einstein has not solved? Well, yes. By Dr. Emili Elizalde, head of the Theoretical Physics and Cosmology Division of the ICE/CSIC