how is earth's atmosphere different from venus and mars?
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It all comes down to water. Earth's vulcanism driven atmosphere was likely dominated by carbon dioxide like Venus and Mars, but Earth also has vast oceans of liquid water. ... While Venus' atmosphere is mostly carbon dioxide, it is much thicker than Earth's, and contains four times the nitrogen.
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The Earth's atmosphere is a thin envelope of gases surrounding the solid planet, the hydrosphere, and biosphere. The composition of the atmosphere consists largely of two elements, oxygen and nitrogen. ... The greenhouse gases include water vapor, carbon dioxide, and methane.
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Atmospheric Conditions: ... The primary difference is that the atmospheres get progressively cooler the farther away they are from Sun. As a result, each Jovian planet has distinct cloud layers who's altitudes are determined by their temperatures, such that the gases can condense into liquid and solid states.
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Distinguishing features Known as the Red Planet, Mars has a very thin atmosphere containing mostly carbon dioxide, with nitrogen, argon, and trace amounts of oxygen and water vapor. There is evidence that liquid water flowed on the surface long ago.
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It has a similar size, mass, density and gravity, as well as a very similar chemical composition. In other ways, Venus is very different than Earth, with its high surface temperature, crushing pressure, and poisonous atmosphere.
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Mars has weak magnetic field, has a very thin atmosphere composed of CO2, is geologically dead, has lots of craters, no plate tectonics. How are today's atmospheres of Venus and Mars similar? ... They are both composed of 95-96% CO2, with most of the rest being N2. Venus' atmosphere has 10^4 X the pressure on the surface.
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Earth's atmosphere. Earth's atmosphere is a layer of gases surrounding the planet Earth and retained by the Earth's gravity. It contains roughly 78% nitrogen and 21% oxygen 0.97% argon and carbon dioxide 0.04% trace amounts of other gases, and water vapor. This mixture of gases is commonly known as air.
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The atmosphere of Mars is the layer of gases surrounding Mars. It is primarily composed of carbon dioxide (95.32%), molecular nitrogen (2.6%) and argon (1.9%). It also contains trace levels of water vapor, oxygen, carbon monoxide, hydrogen and other noble gases. The atmosphere of Mars is much thinner than Earth's.
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While Venus' atmosphere is mostly carbon dioxide, it is much thicker than Earth's, and contains four times the nitrogen. ... As carbon dioxide was broken down by cyanobacteria, more CO2 could be dissolved into the ocean. This gave rise to our modern atmosphere dominated by nitrogen and oxygen.
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An atmosphere is the layer of gases that envelop a planet. On the Earth, it is this envelope that allows organisms to live. Atmospheric ozone protects us from ultraviolet radiation. CO2 and other gases trap heat and keep the surface warm enough for life to thrive.
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Mars is only about one-half the diameter of Earth, but both planets have roughly the same amount of dry land surface area. ... Mars and Earth are very different planets when it comes to temperature, size, and atmosphere, but geologic processes on the two planets are surprisingly similar.
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Most of the Outer Planets are made of gas. ... The contents of the atmospheres of the Inner Planets varies from planet to planet. Mercury has no atmosphere although Sodium and Helium can be detected above the surface. Venus' atmosphere is mostly Carbon Dioxide with a very small amount of Nitrogen.
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Mars does have an atmosphere, but it is about 100 times thinner than Earth's atmosphere and it has very little oxygen. The atmosphere on Mars is made up of mainly carbon dioxide. An astronaut on Mars would not be able to breathe the Martian air and would need a spacesuit with oxygen to work outdoors.
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Earth and Venus are approximately the same size, both have an atmosphere, and have a similar topography. Evidence shows that Mars once had a much denser atmosphere, had oceans, and probably had life at one time. And, there's a chance that Mars still has life of some form. These are just a few of the similarities.
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The atmosphere of Venus is mostly carbon dioxide, which is a very heavy gas. Lighter gasses have been blown away into space by the solar wind, and there is no plant life to convert CO2 to oxygen. ... This compresses more of Venus' atmosphere into a given volume, also making it denser.
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By size, Venus and Earth could be twins. Venus is less than 1000 km thinner while Mars is only 38% the size of Earth. All three have an atmosphere. ... The atmospheric pressure is intense on Venus at 90 Earth atmospheres, normal on Earth [of course] at one atmosphere and only about 0.6% of Earth's pressure on Mars.
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The atmosphere of Venus is very hot and thick. ... The atmosphere of Venus is made up mainly of carbon dioxide, and thick clouds of sulfuric acid completely cover the planet. The atmosphere traps the small amount of energy from the sun that does reach the surface along with the heat the planet itself releases.