Venus' Atmosphere: Composition, Climate and Weather

Space.com | 10/18/2018 | Staff
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Venus has the distinction of being the hottest planet in the solar system, and the fault lies solely with its atmosphere. What is it about the air on Venus that keeps the planet cooking?

The atmosphere of Venus is made up almost completely of carbon dioxide. It also includes small doses of nitrogen and clouds of sulfuric acid. The air of Venus is so dense that by mass, the small traces of nitrogen are four times the amount found on Earth, although nitrogen makes up more than three-fourths of the terrestrial atmosphere. This composition causes a runaway greenhouse effect that heats the planet even hotter than the surface of Mercury, although Venus lies farther from the sun. When the rocky core of Venus formed, it captured much of the gas gravitationally.

Venus - Earth - Size - Someone - Ground

Although Venus and Earth are similar in size, someone standing on the ground on Venus would experience air about 90 times heavier than Earth's atmosphere; pressures are similar to diving 3,000 feet beneath the ocean. The most Earth-like atmosphere in the solar system occurs 30 to 40 miles (50 to 60 kilometers) above the surface of Venus. Both oxygen and...
(Excerpt) Read more at: Space.com
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