This was
your sky.

Albert Einstein's Miraculous Year

In 1905, Albert Einstein published four papers that changed our understanding of the universe. One paper proposed that light could behave as a quantized particle, a photon. Another explained the thermal motion of atoms and molecules, at a time when atoms themselves were just theories. A third outlined special relativity, reconciling motion and the constant speed of light. The fourth introduced the idea of mass-energy equivalence, E=mc².