In this Astroneer Guide I talked about a couple of different items you can craft; The Oxygen Tank, Battery, Power Cell, Filter, Beacon, and Solar panel.
The Oxygen tank can increase the amount of oxygen you can store. The Battery increase the power you can store. The Filter, once constructed, will replenish your O2 supply and also prevent you from consuming O2 for a short while. The Power Cell works the same, except for with energy instead of oxygen. The Beacon can be placed in the world, and will act as a marker that allows you to get back to where the beacon was placed.
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