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Mars only has a thin atmosphere, mainly of Carbon Dioxide. This is due to its relatively small mass, where the gravity is too low to sustain a large atmosphere. In addition, the absence of a magnetic field around the planet means that the solar wind can more easily strip any gas away from the planet.
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∙ 13y ago
Wiki User
∙ 12y agoMars has a thin atmosphere, mainly of Carbon Dioxide. Its surface pressure is around 0.7 kPa, around 0.7% of Earths surface pressure.
Wiki User
∙ 8y agoMercury has no atmosphere to speak of; Mars has less than 1% of Earth's and Venus has about 70 times Earth's.
Wiki User
∙ 10y agoI think it would be Mercury and Mars.
Anonymous
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∙ 15y agoIn this solar system, Mercury
Wiki User
∙ 11y agoIt's Mars.
Wiki User
∙ 11y agoMercury
Anonymous
The two alike rocky planets, Earth and Venus have sustainable atmospheres, due to size. Mars has an extremly thin atmosphere while surprisingly, mercury barley even has a notifiable one.
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Is Mars made of gas or rock?
No. Mars has a rocky surface and a metallic core.
What are the two planets in the solar system with no atmosphere?
I would say Mercury and Mars, even though Mars does have an extremely thin atmosphere. Pluto doesn't have an atmosphere, but it also is no longer officially considered to be a planet.
Do all inner planets have a thin atmospheric shell?
Each of the four inner planets has an atmosphere, except Mercury. Mercury is too small and close to the sun for its gravity to sustain a proper atmosphere, although a tenius and unstable exosphere it thought to exist.
Which of the rocky planets have well developed atmospheres?
The two largest, Earth and Venus, have a mass large enough to sustain an extensive atmosphere. The other two rocky planets, Mars and Mercury, are too small to hold such an atmosphere. There is some, but it is very thin.
Which two terrestrial planets do not have atmospheres?
Mercury is the only planet (and inner planet) without an atmosphere - due to its small size. Mars has an atmosphere, but it is a thin one, mainly of carbon dioxide.
Is Mars made of gas or rock?
No. Mars has a rocky surface and a metallic core.
Do all inner planets have thick atmospheres?
No. Only Venus has a really thick atmosphere. Mars has only a thin atmosphere and Mercury has almost no atmosphere.
Which of the 8 major planets has a thin carbon dioxide atmosphere?
Both Venus and Mars have atmospheres that are mostly carbon dioxide. However, Venus has a very thick atmosphere. The Martian atmosphere is very thin, so the answer is Mars.
Why do all the inner planets have in common?
The inner planets Mercury, Venus, Earth, Mars are are all relatively small, they are all rocky, they all have a relatively thin atmosphere.
What is the difference between a thin and thick atmosphere?
A thin atmosphere is thin and a thick atmosphere is thick
What is the difference between thick and thin atmosphere?
A thin atmosphere is thin and a thick atmosphere is thick
What are the two planets in the solar system with no atmosphere?
I would say Mercury and Mars, even though Mars does have an extremely thin atmosphere. Pluto doesn't have an atmosphere, but it also is no longer officially considered to be a planet.
Why does the temperature drop a lot in other planets at night?
The temperature does not drop drastically on all planets, only planets with a thin atmosphere, such as Mars or Mercury. It is because the thick atmosphere traps the heat, and clouds are a bonus, like on Venus, because they trap much more heat than just a thick atmosphere. On a planet like Mars, which has a very thin atmosphere, it cannot hold on to very much heat in the night side, and a planet like Mercury cannot trap any heat and cannot be shielded from the heat for lack of a real atmosphere. That is the basic idea. =)
Do all inner planets have a thin atmospheric shell?
Each of the four inner planets has an atmosphere, except Mercury. Mercury is too small and close to the sun for its gravity to sustain a proper atmosphere, although a tenius and unstable exosphere it thought to exist.
Which of the rocky planets have well developed atmospheres?
The two largest, Earth and Venus, have a mass large enough to sustain an extensive atmosphere. The other two rocky planets, Mars and Mercury, are too small to hold such an atmosphere. There is some, but it is very thin.
Which two terrestrial planets do not have atmospheres?
Mercury is the only planet (and inner planet) without an atmosphere - due to its small size. Mars has an atmosphere, but it is a thin one, mainly of carbon dioxide.
Does neptune Jupiter uranus and Saturn have thin atmosphere?
Due to their large size and proportionately high gravity, the atmospheres of these planets are quite thick.
