Why can meteorites still burn in space without oxygen?

There is no oxygen in space, but the sun can burn as usual, and then meteorites can also burn normally, of course, the burning of meteorites will only occur gradually when they enter the earth's atmosphereIn space, the friction of a meteorite is relatively small, unless it is said that it flies very fast, it will burn. <>

Life can be divided into physical life and chemical life Basically, this kind of combustion in space, it is a physical combustion, it is friction and luminescence, it is not a standard combustion, because it itself is caused by friction, and the temperature of the surface of the object rises to a certain extent, which will cause the illusion of combustion, but in fact, the oxygen in space is very thinIt hardly does chemical combustion, because it doesn't have anything that can burn itself, and if you think of a stone, there's nothing in it that can be burned, it's just friction and glow. <>

The combustion of the sun in space is the real physical combustion, it is the light and heat produced by the nuclear reaction, it does not need oxygen, because chemical combustion needs oxygen, for example, we usually burn coal or burn some firewood at home, we need enough oxygen, and let us fan the fan, so that he can find more vigorous, in fact, it is to give him more oxygen, and there are certain experiments in the species, such as clicking a small note in a cup, sealing it for a while and it will be extinguished, because there is no oxygen, This is standard chemical combustion, which is affected by oxygen, but the glow of meteorites and the glow of the sun are not chemical combustion. <>

There are many phenomena in the universe that we can't understand, because the universe has appeared for too long, and the time for human beings to appear is too shortThere must be a lot of things we don't understand. This will require more efforts on the part of future generations to follow in the footsteps of those who came before us.

Why can meteorites burn in space without oxygen?

If there is no oxygen in space, why can meteorites burn?

Meteorites are "guests" from outside the Earth. According to the different chemical composition of the meteorite itself, it can be roughly divided into three types:

1.Iron meteorite, also called meteorite, its main components are iron and nickel;

2.Stony-iron meteorites, also called meteorites, are less of this kind of meteorite, of which iron-nickel and silicate account for roughly half;

3.Stony meteorites, also called meteorites, are mainly composed of silicates, which are the most numerous.

When meteorites fall to the ground, they are very fast, and when they pass through the dense atmosphere of the earth, they will violently rub against the atmosphere and generate heat. A meteorite with a small size burns up in the atmosphere, and only a meteorite of a large enough volume can pass through the atmosphere and fall to the ground.

Combustion is not necessarily an oxidation reaction, as long as it is a physical and chemical phenomenon that violently emits light and heat, it can be called combustion, and the surface temperature of meteorites reaches several thousand degrees when flying at high altitude. At 1200 degrees the stone is partially melted, 1500 degrees.

When the iron melts, the stone can emit red light that can be seen with the naked eye at 600 degrees, and white light when it is above 1000 degrees, melting, and the vaporized meteorite material leaves a glowing trail in the air.

Air friction will not only cause meteorites to gain a very large amount of energy in the atmosphere, but also these energies will reduce their strength just as some objects are heated, such as some stones become very thin after being burned by fire. Moreover, the speed of meteorites is getting faster and faster under the action of gravitational force, and the distance between the air and the ground in front of the meteorite is getting closer and closer, resulting in more and more unobstructed air circulation in front of the meteorite.

You must have watched the events in Russia to ask here. Meteorites enter the Earth's atmosphere at a speed of 30 kilometers per second, and it occurs because the speed is too fast and the atmosphere creates friction.