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Lt Col Charlie Brown
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In one “crucial first step” for life on Mars, NASA says an experimental device on its Perseverance rover has made oxygen by using the red planet’s carbon dioxide-rich atmosphere.

The device, called MOXIE, which is roughly the size of a car battery, produced 5.4 grams of oxygen on Tuesday within an hour’s time. That amount is enough to keep an astronaut alive for about 10 minutes of normal activity, NASA said Wednesday.

Fascinating...but is this polluting the planet we've come to explore?
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