They carry liquid oxygen with them in their capsule. CO2 is removed through filters. Don't ask where their drinking water comes from.
Astronauts bring tanks of oxygen with them when they go into space. The space suits they use to make space walks also have small oxygen tanks on them.
There is no oxygen in space. Astronauts have to take oxygen with them.
A suit, a rocket or brought oxygen maybe?
Liquid oxygen and liquid hydrogen are used as rocket fuel, oxygen gas is used by the astronauts to breath.
They have oxygen tanks attachted to there backs which have pipes with masks on the end which the astronauts keep on there face.
None they use carbon monoxide
Astronauts use compressed oxygen mixed with nitrogen fo produce their breathing gas.
They need to take it with them. There is no oxygen in space
Their suits-similar to divers.
They carry it with them on board.
They are used so that astronauts can travel faster when on the moon. Hence, they can travel further before they run out of oxygen
To breath oxygen.