Famous Physicists Learn some famous names in physics Tools A B Marie Curie radiation research Guglielmo Marconi radio Albert Einstein theory of relativity Sir Isaac Newton in Principia, explained laws of motion and gravitation Edwin Powell Hubble discovered galaxies beyond the Milky Way Enrico Fermi nuclear physics Nicolaus Copernicus heliocentric theory of planetary movement Lord Kelvin discovery of absolute zero, the temperature at which molecular motion stops