Producing oxygen from rock is harder in lower gravity, modeling study shows

One of the challenges engineers face when developing technologies for use in space is that of different gravities. Mostly, engineers only have access to test beds that reflect either Earth's normal gravity or, if they're fortunate, the microgravity of the ISS. Designing and testing systems for the reduced, but not negligible, gravity on the moon and Mars is much more difficult. But for some systems, it is essential.