Is it true that the universe is devoid of oxygen? Why is there no oxygen in space

It depends on how to say it.

In cosmic space, there is really no oxygen. Not only is there no oxygen, but there is no other gas, and it is a vacuum environment. But on non-stellar planets with a certain mass and volume, there is still some oxygen.

The element oxygen is reacted inside a star by nuclear fusion.

At the end of a star's life, the oxygen on the star diffuses into the universe and mixes with the original cloud of interstellar gas dust in the universe to form the raw materials for the formation of the next generation of stars and planets. Solar system.

That's how the oxygen element in it comes from. Therefore, oxygen is ubiquitous in the universe, but what exists is the combined oxygen of oxygen and other elements, not free elemental oxygen.

On non-stellar planets, the vast majority of oxygen is also in a bound state, such as silicates, sulfates, and carbon dioxide.

Sulfur dioxide, alumina.

Iron oxide, etc., and, of course, water. Free oxygen is only a trace amount. In the second generation of stars and above, oxygen exists in the plasma state, such as oxygen on the sun, which is oxygen in the ionized state, and it is not oxygen.

Oxygen on Earth also comes from the oxygen in the cloud of interstellar gas dust at the time of the formation of the Earth, and most of it is also in a bound state, in the form of metallic and non-metallic oxides and oxygenated salts. The free oxygen on Earth comes from the photosynthesis of green plants and photosynthetic microorganisms.

Since there is no life on other planets, it is impossible to have a large amount of free oxygen.

In the solar system, Mars, Venus, Jupiter.

On planets and moons with large masses, there are also some very small amounts of oxygen, but the amount is too small to be needed for human breathing.

And in the universe, it is a vacuum environment, and there can be no oxygen.

Most of the space in the universe is almost a vacuum, only on a huge planet, due to the huge gravitational attraction will absorb other substances around the planet, it may be gas or asteroid groups, like the earth can adapt to human survival of the planet, as far as the earthlings know, the earth is the only planet suitable for human habitation. For the unknown universe, human beings are too small!

There is no oxygen in the universe, oxygen is only available on the earth, and it has been found that there is air in the universe so far.

Even if there is oxygen, it is extremely thin.

Because space is in a vacuum, there have been many spontaneous combustion phenomena in space since the universe was large, so there is no oxygen.

Secondly, the origin of the earth's oxygen is the result of the exchange of anaerobic bacteria. Due to the protection of the atmosphere, oxygen from Earth cannot go to space.

Earth's oxygen molecules have been accumulating since time immemorial. Since the emergence of low-single-celled plants such as cyanobacteria on Earth, large amounts of oxygen have been dissolved in large quantities of oxygen by seawater until saturated, and then released into the air on the surface of the water. In this way, oxygen molecules slowly accumulate.

In addition, there must be a gravitational pull to collect oxygen. Oxygen molecules in space are not gravitationally strong enough for them to gather, so there can be no oxygen in space.

There is no oxygen in space. Space refers to the universe outside the Earth's atmosphere, the entire space outside the atmospheric space. Physicists divide atmospheric space into 5 layers: troposphere, stratosphere, thermosphere, mesosphere, and outer atmosphere.

The Moon is the closest celestial body to Earth (about 380,000 km) and is the first stop on human space exploration.

On April 12, 1961, the former Soviet cosmonaut Gagarin flew around the earth on the former Soviet Union's "Vostok" spacecraft, becoming the first person to go into space.

A spacewalk, also known as an out-of-cabin activity, refers to the process by which astronauts complete various tasks outside of manned spacecraft or on the moon and planets.

Oxygen does not exist in most parts of the universe, and the place where there is a lot of oxygen is where people live for sure. Because space itself is a state of vacuum, since the universe has **, there is a lack of oxygen in space, and there are a lot of spontaneous combustion phenomena, and then why is there oxygen on the earth, because there are anaerobic bacteria on the earth, they exchange the oxygen they become, and then there is an atmosphere on the earth to protect it, and the usual oxygen cannot be taken from the sky, so there is no oxygen in space.

Oxygen is actually very stable in the air, and it is not easy to mix and react with other substances, but oxygen will become a lively substance with high-temperature substances, and as long as it touches it, it will occur with other substances and react.

It's not that there's no oxygen in the universe, it's that there's no air, because the gas molecules are more distant from each other, and there's less gravitational attraction to each other, so there's a gravitational nucleus to attract, and if there's no core like that in space, there's no air.