On the red and dusty surface of Mars, nearly 100 million miles from Earth, an instrument the size of a lunchbox is proving it can reliably do the work of a small tree. The MIT-led Mars Oxygen In-Situ Resource Utilization Experiment, or MOXIE, has been successfully making oxygen from the Red Planet’s carbon-dioxide-rich atmosphere since April 2021, about two months after it touched down on the Martian surface as part of NASA’s Perseverance rover and Mars 2020 mission. In a study published today in the journal Science Advances, researchers…