A universe is born

Take a (brief) journey through the early history of our cosmos. The universe was a busy place during the first three minutes. The cosmos we see today expanded from a tiny speck to much closer to its current massive size; the elementary particles appeared; and protons and neutrons combined into the first nuclei, filling the universe with the precursors of elements. By developing clever theories and conducting experiments with particle colliders, telescopes and satellites, physicists have been abl...