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The atmosphere of Earth is composed of a layer of gas mixture that surrounds the Earth's planetary surface (both lands and oceans), known collectively as air, with variable quantities of suspended aerosols and particulates (which create weather features such as clouds and hazes), all retained by Earth's gravity.
“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.
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.
Earth's atmosphere extends from the surface to a height of around 10,000 km [6,213 miles]. Most of the air mass is confined to the lower part of the atmosphere and the higher the...
Earth’s atmosphere is bounded at the bottom by water and land—that is, by the surface of Earth. Heating of this surface is accomplished by three physical processes— radiation, conduction, and convection —and the temperature at the interface of the atmosphere and surface is a result of this heating.
Earth's atmosphere is essential to life, yet the invisible gases that form our "security blanket" can be hard to grasp. A new five-part series looks at our atmosphere, human impacts on it and ways NASA is studying the changing air we breathe.
What is Earth’s atmosphere? Earth’s atmosphere is similar to a jacket for our planet. It surrounds our planet, keeps us warm, gives us oxygen to breathe, and it is where our weather happens.