brian greene — 1 discussions

  1. S

    High School RocketGirl receives a radio message from Earth

    This is based on Professor Brian Greene's wonderful 11-hour course on Special Relativity which I watched recently on YouTube. RocketGirl is travelling to Proxima Centauri, which is 4.25 light years from Earth. She is moving at a constant velocity of 80 percent of the Speed of Light and will...