Light is one of the most important parts of our lives. L RIOFRIO has been working as a scientist at NASA Johnson Space Center in Houston. While studying the Moon, Riofrio made a discovery that could change science. Light is slowing down, as predicted years before. Starting with a child first opening her eyes, Riofrio tells the whole history of exploration and light. From Earth's shape to our latest discoveries about the Universe, you will follow the footsteps of scientists and explorers. This new edition tells of the biggest science story of 2014, "discovery of the century," the collapse of old ideas and why 2015 is The Year of Light.