Since -183 degrees Celsius is the boiling point of oxygen, it boils, meaning that it turns into a gas from a liquid . The process is the same as water boiling at 100 degrees Celsius, where a large amount of gas evolves (comes off) from the liquid. The same boiling process for oxygen just happens at a much colder temperature. The more detailed process on a molecular level is that at -183 degrees, the surroundings have enough energy to give to many oxygen molecules such that the attraction between molecules can be overcome, and many oxygen molecules can thus escape the liquid.

That is the temperature at which liquid oxygen boils at one atmosphere of pressure. Gaseous oxygen won't necessarily be affected.

Oxygen is the third most common element in the universe, and it makes up about 20% of the air that we breathe. The boiling point of oxygen is -182.96 degrees Celsius (under 1 standard atmosphere). This means at temperatures below that point, oxygen is a solid or a liquid, and at temperatures above that point, oxygen is a gas.

So at -183 degrees Celsius, oxygen is a liquid. You can think of water as an analogy: between 0 and 100 degrees Celsius, water is a liquid, above it’s a gas (steam), and below it is a solid (ice). Indeed, at a colder temperature (-218 degrees Celsius), oxygen is a solid!

Liquid oxygen has many important uses in science, medicine, and technology. For instance, liquid oxygen (also known as Lox) is often a part of many different types of rocket fuel, including the rockets that sent astronauts to the moon and for the space shuttle’s engines.