Astronauts need a full enclosed location (e.g. spacecraft, spacesuit, etc). As long as it's airtight, and there's a breathable atmosphere inside what they are in, they'll be fine.
No, astronauts cannot breathe on the moon because there is no atmosphere. It lacks oxygen and air pressure required for humans to breathe. Astronauts must rely on oxygen supplies within their spacesuits or habitats.
Since there is no breathable air in space, they need the gear to allow them to breath.
Astronauts on the space station breathe a mixture of oxygen and nitrogen, similar to the air we breathe on Earth. The station has systems that generate and maintain this breathable atmosphere, including equipment to produce oxygen from water and remove carbon dioxide exhaled by the astronauts.
Oxygen (O2).
In space, it gives them air to breathe.
Astronauts will need to take air to Mars because the Martian atmosphere is thin and mostly carbon dioxide, making it unsuitable for human breathing. Bringing air from Earth ensures that astronauts will have a breathable atmosphere during their mission on Mars.
They breathe artificial "air" that is almost the same as the air on Earth. It is made up of 21% oxygen and 78% nitrogen similar to the air we breathe and it is at a pressure of 14.7psi which is the same as the atmospheric pressure on earth.
Astronauts breathe using the life support systems on their spacecraft or spacesuits. These systems provide a controlled supply of oxygen for them to breathe while in space. Inside the spacecraft, the air is managed to ensure astronauts have a safe and breathable atmosphere.
Spacesuits and oxygen tanks are needed in space because there is no atmosphere to provide oxygen for astronauts to breathe. Spacesuits also protect astronauts from extreme temperatures, radiation, and micrometeoroids. Without these, astronauts would not be able to survive in the harsh conditions of space.
Astronauts fly in rockets to the moon. They need to wear special clothing and masks so they can breathe because there is no oxygen in the solar system.
so they can breathe
Astronauts need an air tank to supply them with oxygen to breathe in the airless environment of space, where there is no atmospheric pressure to support life. The air tank also helps regulate the pressure inside the astronaut's suit and provides a way to expel carbon dioxide.