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Nasa has managed to produce enough oxygen on Mars to allow an astronaut to breathe for several hours.

A toaster-sized device called Moxie, onboard the American space agency's Perseverance Rover, landed on the Red Planet in February 2021 and has made 122 grams of the gas - enough for an astronaut to breathe for roughly three hours.

Oxygen is one of the main gases that make up air on Earth and is needed by virtually all life on our planet to survive.

Nasa's hope is that future human missions will take much bigger versions of Moxie to the Red Planet rather than carrying tanks of breathable oxygen with them on rockets from Earth.

How does Moxie make oxygen on Mars?

Mars' atmosphere is almost entirely made up of carbon dioxide (CO₂) - 96% of the planet's air contains CO₂.

Oxygen is only at 0.13%, compared with 21% in Earth's atmosphere.

Moxie is able to strip the oxygen atoms from CO₂ molecules, which are made up of one carbon atom and two oxygen atoms.

Could Moxie mean future human life on Mars?

Not only is oxygen vital for astronauts to breathe it's also an important part of burning rocket fuel when it comes to blasting off into space.

So far, Moxie has produced oxygen on 16 separate occasions since its first attempt, two months after landing on Mars in April 2021 - a result that Nasa says is much better than expected.

"Moxie's impressive performance shows that it is feasible to extract oxygen from Mars' atmosphere - oxygen that could help supply breathable air or rocket propellant to future astronauts," said Pam Melroy from Nasa.