Atlantis astronauts completed their third and final spacewalk of their mission Monday, ... the installation of the fresh oxygen tank. The 1,200-lb. tank of high-pressure oxygen, ...

Astronauts depend on a continuous supply of oxygen for life support in space, using well-designed systems inside spacecraft and space suits during spacewalks. In emergencies, they have portable ...

Obtaining oxygen and power in space is not as easy as it is on Earth. For astronauts on space missions, oxygen is created through electrolysis, while power comes from the sun.

(AP) -- A pair of astronauts stepped out on the third and final spacewalk of their shuttle mission Monday, helping to install an enormous oxygen tank at the International Space Station.

Astronauts rely on complex oxygen supply systems to survive in space, where oxygen is scarce. From built-in spacecraft systems to portable oxygen tanks, every detail is crucial for their safety.

The most efficient way to carry large quantities of hydrogen and oxygen on a spacecraft is in liquid form, and so the Apollo Service Module had two large liquid hydrogen tanks (which each held ...

Astronauts depend on oxygen tanks while in space, with backup systems in place to prevent emergencies. In the event of an oxygen supply failure, emergency tanks and portable cylinders provide a ...