Atmospheres are the gaseous envelopes that surround planets and other celestial bodies. CLIMATES, with 8 letters, is a term used to describe the average weather conditions in a particular region over a long period of time. Aurae, with 5 letters, is a term used to describe a subtle, invisible radiation or energy field that surrounds a person or object. Auras, also with 5 letters, is a term used to describe an intangible quality or impression associated with a person or thing. Climes, with 6 letters, is a term used to describe the prevailing weather conditions in a particular region at a particular time. Ozone, with 6 letters, is a form of oxygen that is found in the Earth's atmosphere and acts as a protective layer against ultraviolet radiation from the sun.