Atmosphere - Wikipedia An atmosphere (from Ancient Greek ἀτμός (atmós) ' vapour, steam ' and σφαῖρα (sphaîra) ' sphere ') [1] is a layer of gases that envelop an astronomical object, held in place by the gravity of the object
What Is the Atmosphere? | Center for Science Education The atmosphere is a mixture of gases that surrounds the Earth It helps make life possible by providing us with air to breathe, shielding us from harmful ultraviolet (UV) radiation coming from the Sun, trapping heat to warm the planet, and preventing extreme temperature differences between day and night
Atmosphere | Definition, Layers, Facts | Britannica Atmosphere, the gas and aerosol envelope that extends from the ocean, land, and ice-covered surface of a planet outward into space The density of the atmosphere decreases outward, because the planet’s gravitational attraction, which pulls the gases and aerosols inward, is greatest close to the surface
What Is… Earth’s Atmosphere? - NASA “The Earth’s atmosphere allows life to exist like a protective bubble that surrounds the planet,” stated Ueyama Although we cannot directly see the atmosphere, it provides the air we breathe and protects us from harmful ultraviolet (UV) rays The atmosphere also works to trap heat and maintain moderate, habitable temperature ranges
Layers of the Earths Atmosphere - Facts with Diagram The atmosphere of the earth is the layer of gases (commonly called air) that surrounds the earth and creates an inhabitable environment, maintains temperature, causes weather, and protects its inhabitants from solar radiation
What Is Atmosphere? - BYJUS An atmosphere is a blanket of gases that surrounds Earth It is held near the surface of the planet by Earth’s gravitational attraction Argon, oxygen and nitrogen from the three main constituents of the atmosphere