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The oxygen in Earth's atmosphere comes from photosynthesis, which is carried out by plants and algae. Earth is the only planet known to have life, which is the only way we know of that would cause a planet to have an oxygen-rich atmosphere. Oxygen can form from the chemical breakdown of water via sunlight, but only in trace amounts.
Wiki User
∙ 8y ago
Wiki User
∙ 9y agoIn our solar system, only Earth has a significant quantity of oxygen in its atmosphere, constituting about 21 percent of its makeup. Other planets do have small quantities, Mars with just over a tenth of a percent, Mercury, Venus, and other planets only in trace amounts.
It should be noted that tens of billions of planets inside our galaxy alone are believed to be Earth-like, and statistics would demand that many of them would have oxygen in their atmosphere.
Wiki User
∙ 7y agoThe Earth's atmosphere is presently about 21% O2
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What planets do not have oxygen?
Only Earth has any significant amount of oxygen in its atmosphere.
Do any other planets have oxygen?
Earth is the only known planet with an oxygenated atmosphere.
What is the main component of Mars' atmosphere?
Mars has an atmosphere, though it is different than our atmosphere here on Earth. The atmosphere of Mars is thin, cold, and dry and contains much less oxygen than the atmosphere of Earth. The oxygen content of the Martian atmosphere is only 0.13 percent, compared with 21 percent in Earth's atmosphere. Carbon dioxide makes up 95.3 percent of the gas in the atmosphere of Mars. It also contains nitrogen and argon and very small amounts of water and methane. Additionally, the atmospheric pressure on Mars is only about 1/100 that of Earth's!
Does space have an atmosphere or is it only planets that have them?
Space does not have an atmosphere. It is generally considered a vacuum. Planets and some moons have atmospheres.
Is there a planet that has oxygen other than Earth?
Probably. Small amounts of oxygen has already been detected on other planets (and moons) within our solar system, including:Saturn's moon RheaJupiter's moons Europa and GanymedeMars (0.13% of the atmosphere)
What planets do not have oxygen?
Only Earth has any significant amount of oxygen in its atmosphere.
Do any other planets have oxygen in their atmospheres?
Earth is the only planet known to have a significant amount of oxygen molecules in its atmosphere.
Which of the eight planets has the highest percentage of oxygen?
Earth is only one planet where gaseous oxygen is found. The Earth's atmosphere is about 21% Oxygen.
Which planets have oxygen rich atmosphere?
In our solar system there's only one and that's the Earth.
Do any other planets have oxygen?
Earth is the only known planet with an oxygenated atmosphere.
What planets have oxygen in them?
Almost all the planets have oxygen within them in a chemically combined state {for example: sulphur dioxide, water, etc.}. However, only the Earth has any significant amount of oxygen as a gas, in its atmosphere.
How is atmosphere of earth is different from the other planets?
Earth is the only known planet to have significant amounts of free oxygen in its atmosphere. Also, it's the only planet in our solar system where nitrogen is the main gas in the atmosphere.
Why does Earth only have oxygen?
It doesn't; Earth has many other gasses. Our atmosphere is mostly nitrogen; only about 21% is oxygen. It may be that you intended to ask, why does only Earth have free oxygen in its atmosphere, while other planets in the solar system don't. Free oxygen is produced by green plants (by a process called photosynthesis) and green plants grow only on Earth.
What planet has a nitrogen- oxygen atmosphere?
Earths atmosphere is rich in Oxygen, some 21% of the air is Oxygen. There is oxygen on other planets, but the percentage comes nowhere close to this. The percentage of Oxygen in earths atmosphere is thought to have been much higher in the past, before animals were about, but after the arrival of plants.
Which of the 8 major planets has a mostly nitrogen atmosphere?
Only one. The one we walk, talk and live on. 78% nitrogen, 21% Oxygen.
What is the main component of Mars' atmosphere?
Mars has an atmosphere, though it is different than our atmosphere here on Earth. The atmosphere of Mars is thin, cold, and dry and contains much less oxygen than the atmosphere of Earth. The oxygen content of the Martian atmosphere is only 0.13 percent, compared with 21 percent in Earth's atmosphere. Carbon dioxide makes up 95.3 percent of the gas in the atmosphere of Mars. It also contains nitrogen and argon and very small amounts of water and methane. Additionally, the atmospheric pressure on Mars is only about 1/100 that of Earth's!
Do other planets have air?
Yes. Most of the planets in our solar system and presumably most of the extrasolar planets too have a range of amounts of oxygen present. However, only on a very few of them is it in elemental form; on the others it is combined with other elements such as on Venus in the form of carbon dioxide and on Mars in the form of iron oxides. So far only Earth is known to have significant amounts of oxygen in its atmosphere.
