You Are the Universe [antikvár]

PREFACE YOU AND THE UNIVERSE ARE ONE "here's one relationship in your life—in everyone's life— that has been kept a secret. You don't know when it began, and yet you depend upon it for everything. If this relationship ever ended, the world would disappear in a puff of smoke. This is your relationship to reality. A huge number of things must come together perfectly to construct reality, and yet they do so completely out of sight. Think of sunlight. Obviously, the sun can't shine unless stars exist, since our sun is a medium-size star floating beyond the center of the Milky Way, our home galaxy. Ttiere are few secrets left to discover about how stars form, what they are made of, and how light is produced in the incredibly hot cauldron at the core of a star. The secret lies elsewhere. As sunlight travels 93 million miles to Earth, it penetrates the atmosphere and lands somewhere on the planet. In this case, the only somewhere we're interested in is your eye. Photons, the packets of energy that carry light, stimulate the retina at the back of your eye, starting a chain of events that leads to your brain and the visual cortex. The miracle of vision lies in the mechanics of how the brain processes sunlight, that much is clear. Yet the step that mat- i,' ters the most, converting sunlight into vision, is totally mysteri- :, ous. No matter what you see in thé world—an apple, cloud, ; , V