Many of us have dreamed of flying through space and soaring through the air. We wonder what it would be like to be a bird. But the closest most of us will get to experiencing this is flying on a plane. If you fly very high, you might actually see the atmosphere: a blanket of air that protects us from radiation. When flying, it would appear to us as a blue, glowing layer. However, most of the time, we’re not aware of the atmosphere at all.