Mostly in planetary nebulae where a star that was big enough to produce oxygen when it exploded is.
They need to take it with them. There is no oxygen in space
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.
The space shuttle is able to fire its engines in space because it takes the needed oxygen with it.
There is no oxygen in space. Astronauts have to take oxygen with them.
In space there is no oxygen. Space is a vacuum. All things like a rocket going to space, require a fuel to burn, oxygen and a heater. Since there is no oxygen is space they need to provide it for them. Meaning the reaction can take place correctly.
There is no oxygen in space and fire needs oxygen.
While space itself does not have oxygen, astronauts have access to oxygen on space missions through systems that generate and regulate the supply of breathable air. This is necessary for them to survive in the vacuum of space.
Oxygen tanks and space suits are needed for space exploration because there is no air in space and anyone there without suitable coverings and sources of oxygen would quickly die.
Fire needs oxygen in order to burn, and there is no oxygen in space, so rockets must take oxygen with them.
No oxygen in space. We need oxygen.
Space shuttles operate in the vacuum of space where there is no air to provide oxygen for combustion. Therefore, they carry their own liquid oxygen as an oxidizer to allow the fuel to burn in the rocket engines. This ensures that the shuttle can generate thrust and maneuver in space.
A space shuttle carries its own supply of oxygen to sustain the astronauts' breathing when they are in space where there is no atmosphere. It ensures they have a continuous source of oxygen for respiration during the mission.