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After making the first powered flight on another world, NASA's 

 mission has managed another key first that could pave the way for future astronauts by making breathable oxygen out of the wispy Martian air.

NASA announced that an instrument aboard the rover had successfully extracted carbon dioxide from the atmosphere on Mars and then 

oxygen atoms from carbon dioxide molecules. 

The Martian atmosphere is about 95 percent carbon dioxide. The remainder is mostly nitrogen and argon.

The feat, announced Wednesday, is considered vital to any long-term stay for humans on Mars, as bringing an ample supply of oxygen from Earth would likely prove impractical. It came ahead of a second successful test of NASA's Ingenuity helicopter after its 

The second flight "reached new milestones of higher altitude, a longer hover and lateral flying," NASA's Jet Propulsion Laboratory said in a tweet.

"MOXIE isn't just the first instrument to produce oxygen on another world," Trudy Kortes, director of technology demonstrations with NASA's Space Technology Mission Directorate, said in a 

 She called it the first technology of its kind to help future missions "live off the land" of another planet.

The Perseverance rover used an instrument known as MOXIE, or Mars Oxygen In-Situ Resource Utilization Experiment, which superheated the carbon dioxide to cleave it chemically, producing about 5 grams of pure oxygen – about enough for an astronaut to breathe for 10 minutes, according to NASA.

"This is a critical first step at converting carbon dioxide to oxygen on Mars," said Jim Reuter, associate administrator for the Space Technology Mission Directorate.

 to produce enough oxygen for future human flights to Mars. A group of four astronauts on the red planet would require an estimated 1 metric ton of oxygen between them to last an entire year, MOXIE principal investigator Michael Hecht of the Massachusetts Institute of Technology said in a 

Oxygen produced on Mars could also be used in combination with rocket fuel to propel rockets returning to Earth. NASA estimates that 

 would be needed for such a rocket carrying four astronauts. An industrial-size, MOXIE-style instrument for use on Mars might weigh about a metric ton, 

On Monday, the twin-rotor Mars helicopter, Ingenuity – part of the Mars 2020 mission that includes the rover and the MOXIE instrument — became the first powered aircraft to fly on another planet.


The 4-pound Ingenuity rose 10 feet in the air, hovered briefly and landed back on the Martian surface without incident. The helicopter, which has an onboard camera, is still being tested, but more ambitious flights are scheduled as the mission progresses.


Science

Joe Palca

Author

Scott Neuman

Fresh off the first-ever powered flight on another world, NASA's Mars 2020 mission has managed another key first that could pave the way for future astronauts.

Out of thin air: NASA rover makes oxygen from Martian atmosphere

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