Atmosphere layers of earth

The atmosphere of the Earth serves as a key factor in sustaining the planetary ecosystem. The thin layer of gases that envelops the Earth is held in place by the planet's gravity. Dry air consists of 78% nitrogen, 21% oxygen, 1% argon and other inert gases, such as carbon dioxide. The remaining gases are often referred to as trace gases,

among which are the greenhouse gases such as water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Filtered air includes trace amounts of many other chemical compounds. Air also contains a variable amount of water vapor and suspensions of water droplets and ice crystals seen as clouds. Many natural substances may be present in tiny amounts in an unfiltered air sample, including dust, pollen and spores, sea spray, volcanic ash, and meteoroids. Various industrial pollutants also may be present, such as chlorine (elementary or in compounds), fluorine compounds, elemental mercury, and sulphur compounds such as sulphur dioxide [SO₂].

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The Mystery's of Venus' Atmosphere: Giant Holes Examined

A new research has revealed about the giant holes in the electrically charged layer of the Venus' atmosphere called the ionosphere.
The findings at National Aeronautics and Space Administration (NASA) provide additional clues to understand Venus's atmosphere, which is made of carbon dioxide, and how the planet interacts with the constant onslaught of solar wind from the sun, and perhaps even what is lurking deep in its core.

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