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Of the planets of our solar system, the atmospheric compositions are thought to be:

Mercury - a very, very, very thin and highly variable atmosphere containing hydrogen, helium, oxygen, sodium, calcium, potassium and water vapor, with a combined pressure level of about 10−14 bar (1 nPa). The extreme temperatures it experiences due to its proximity to the sun allow sodium, calcium, and potassium, which we normally think of as solids, to appear as vapor

Venus - primarily carbon dioxide with a few percent nitrogen. Massive clouds of sulfuric acid fog are also a significant feature of the atmosphere

Earth - about (rounded to the nearest percent)78% nitrogen, 21% oxygen, 1% argon with comparatively small amounts (less than 1%) of water vapor (~0.4% - 1% to 4% at the surface), carbon dioxide (~0.039%) and other gasses.

Mars - a thin atmosphere of about 95% carbon dioxide, 3% nitrogen, and 2% argon

Jupiter - a thick atmosphere that varies a great deal in composition with depth. Overall it is believed to be mostly hydrogen and helium with roughly 1/8 helium and most of the rest hydrogen. The atmosphere also contains small amounts of the noble gases, organic gases, nitrogen compounds, oxygen compounds, sulfur compounds and phosphorous compounds.

Saturn - a thick atmosphere that, like Jupiter varies greatly with depth, but which is, overall, ~96% hydrogen, 3% helium, 0.4% methane, 0.01% ammonia, and 0.01% hydrogen deuteride - "heavy water" vapor with a deterium (2H) atom in place of one of the proteum (1H) atoms that the form of hydrogen in nearly all terrestrial water.

Uranus - similar to Jupiter and Saturn, it is mostly hydrogen and helium. The currently accepted helium molar fraction, i.e. the number of helium atoms per molecule of hydrogen/helium, is 0.152 ± 0.033 in the upper troposphere, which corresponds to a mass fraction 0.262 ± 0.048. It also contains detectable amounts of water, methane, and ammonia.

Neptune - the atmosphere of this planet is also mostly hydrogen (~80%) and helium (~19%) with small amounts of methane (~1%), hydrogen deuteride (<0.02%), and ethane (< 0.0002%).

Pluto - which was once considered a planet, but is now classified as a "dwarf" planet appears to have a thin envelope of nitrogen, methane, and carbon monoxide gases, which are derived from the ices of these substances on its surface.

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What are the atmospheres of outer planets?

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What are the outer plantes made out of?

The outer planets, also known as gas giants, are primarily composed of hydrogen and helium. These planets have thick atmospheres made up of gases like methane, ammonia, and water vapor. Beneath their atmospheres, gas giants have dense layers of metallic hydrogen and rock.


Could you list the planets in order from the thickest to thinest atmospheres?

The terrestrial planets in order from the thickest to thinnest atmospheres Venus, Earth, Mars, and Mercury. Since the gas giants are almost entirely made of gas, it is difficult to determine where the atmospheres end.


How does the chemical composition of the terrestrial planet atmospheres differ from the Jovian planets?

Terrestrial planet atmospheres are primarily composed of gases like nitrogen and oxygen, with small amounts of carbon dioxide and other trace gases, while Jovian planet atmospheres consist mostly of hydrogen and helium, along with traces of methane and ammonia. Terrestrial planets have thinner atmospheres compared to Jovian planets, which have massive, thick atmospheres made up of mostly hydrogen and helium.


What is made of gas in the inner solar system?

Atmospheres of the planets. And the Sun, of course, is made of gas.


What planits are made of gas?

Gas giant planets, such as Jupiter and Saturn, are primarily made of hydrogen and helium gases. These planets have thick atmospheres composed mainly of these gases, with solid cores deep in their interiors.


Do inner planets have thicker atmospheres than outer planets?

no


Do outer planets have atmospheres?

Yes


What are the jovan planets made up of?

Jovian planets, such as Jupiter and Saturn, are primarily composed of hydrogen and helium, similar to the composition of the Sun. They also contain traces of other gases and materials, such as methane, water, and ammonia. These planets have massive gas atmospheres that can extend for thousands of kilometers.


Which planets have atmospheres?

All planets in our solar system have atmospheres, but their compositions and characteristics vary. For example, Venus has a thick and toxic atmosphere primarily composed of carbon dioxide, while Mars has a thin atmosphere mainly made up of carbon dioxide. Earth's atmosphere is mostly nitrogen and oxygen. Gas giants like Jupiter and Saturn have thick atmospheres composed mostly of hydrogen and helium.


What planets have nitrogen atmospheres?

Planets with nitrogen atmospheres include Earth and Venus. Nitrogen makes up about 78% of Earth's atmosphere and about 3.5% of Venus's atmosphere.


Why do all planets with and without atmospheres collide with meteoroids?

All planets, both with and without atmospheres, encounter meteoroids. If the planet has an atmosphere then those meteoroids will burn up long before reaching the surface. Those without atmospheres do not have such protection and so the meteoroids strike the surface directly.