We’ve all had that heart-stopping moment: you’re halfway up a mountain on an irradiated planet, sentinels are shooting at your heels, and your oxygen bar blinks red with 12 seconds of air left. You fumble through your inventory, no refills in sight, and start panicking about losing all the rare resources you spent the last hour collecting. If that sounds familiar, you’re not alone. This guide breaks down exactly how to get oxygen in No Man's Sky for every scenario, from stranded newbie to endgame explorer, with no overly complicated hacks required.
How to Get Oxygen in No Man’s Sky When You’re Stranded With No Gear
If you just spawned into a new save or crashed on an uncharted planet with nothing but your starter mining beam, you don’t need fancy tech to refill your air. The first thing you should scan for is glowing red oxygen flora, the small bulb-like plants that pop up on almost every planet with an atmosphere. Each harvest gives you 10 to 25 oxygen, and you don’t need any mining beam upgrades to collect them. They’re hard to miss, even from a distance, so keep an eye out for their bright red glow when you’re low on air.
You don’t have to stick to plants if you’re in a real pinch. There are three super easy no-gear methods you can use to get air fast:
- Harvest glowing red oxygen flora with your mining beam for 10-25 oxygen per plant, no upgrades required
- Pull 20-75 oxygen from random planetary crates and damaged cargo pods found near drop pods or abandoned structures
- Trade small amounts of carbon or ferrite dust with friendly NPCs you encounter on the surface for emergency oxygen refills
One pro tip for new players: don’t waste your starter emergency oxygen tanks unless you’re below 10% air. Those give you an instant full refill, and they’re a lifesaver if you get caught in a sudden storm or cornered by aggressive sentinels far from your ship.
Mid-Game Oxygen Farming Methods for Regular Explorers
Once you unlock your first base computer and a few basic blueprints, you can stop foraging for oxygen every 10 minutes and set up passive farming systems that do all the work for you. The most popular low-effort option is the oxygen harvester, a small portable unit you can place anywhere on your base property. You only need 100 ferrite dust and 20 carbon to build one, and each unit generates 250 oxygen per hour when fueled with small amounts of carbon. You can place up to 4 per base, so that’s 1,000 oxygen generated passively every hour, no input needed after you refill the fuel every few hours.
These methods take almost no effort to set up and will eliminate any need to scramble for how to get oxygen in No Man's Sky during your regular exploration runs. If you find a planet with an atmosphere that’s over 50% oxygen, you can upgrade to an atmospheric extractor for even higher yields. These run on base power instead of fuel, so if you pair them with solar panels and batteries, they generate 500 oxygen per hour indefinitely, no maintenance required.
I used to run out of oxygen constantly when I was doing long runs to collect ancient bones on extreme weather planets, until I set up 4 oxygen harvesters at my main base. Now I never leave home without 2 full stacks of 999 oxygen in my inventory, so I never have to cut a trip short because I’m low on air.
Oxygen Solutions for Deep Space and Uninhabitable Planets
Not every planet has easy-to-find oxygen flora, and if you’re exploring deep space or dead/barren planets, you can’t rely on foraging to stay alive. The first upgrade you should invest in for these trips is S-class life support modules for your exosuit. Three stacked S-class modules cut your oxygen consumption by 70%, so you can go 3x longer between refills, even in extreme environments. That alone makes most harsh planet exploration way less stressful.
If you’re traveling through space, you can stock up on oxygen for almost no cost at any space station or trade outpost terminal. Oxygen usually sells for 15 to 25 units per piece, so you can buy 2,000 units for less than 50,000 units, which is pocket change once you’re a few hours into the game. If you get stuck on a dead planet with no oxygen supplies, craft a portable oxygen generator from your build menu. It only costs 50 ferrite dust and 10 carbon to make, and it generates 100 oxygen every 30 seconds when fueled with carbon. I forgot mine once on a trip to a dead planet to hunt for storm crystals, and I had to run back to my ship 3 times before I remembered I could craft one on the spot. Don’t make that mistake.
You can also craft oxygen from common resources if you have a portable refiner on hand. The easiest recipe is 2 carbon + 1 kelp sac = 5 oxygen, which is perfect if you have extra kelp sacs from underwater exploration trips. If you have a large refiner, you can process entire stacks of resources into thousands of oxygen in just a few minutes.
Pro Hacks to Cut Your Oxygen Usage Long Term
The easiest way to never worry about oxygen again is to cut down on how much you use in the first place, instead of just farming more of it. The biggest game changer for most players is using an exocraft for surface exploration. All exocraft have their own built-in life support systems, so you don’t use any of your personal oxygen when you’re inside one. You can drive for hours across the harshest planets without ever touching your personal oxygen supply, as long as you keep the exocraft fueled.
If you do a lot of underwater exploration, invest in the aquatic life support upgrade for your exosuit. A fully upgraded version lets you breathe underwater indefinitely, so you don’t have to surface for air or waste oxygen while you’re hunting for sunken wrecks or aquatic resources. If you play multiplayer, you can also share oxygen with your squad members if someone runs low, so always speak up if you’re running out of air instead of trying to tough it out alone.
Another small hack: if you’re running low on air and you’re close to your ship, your freighter, or any player-built base, just run inside. All enclosed structures have infinite oxygen, so you can refill your bar for free in seconds without using any of your stored supplies.
At the end of the day, figuring out how to get oxygen in No Man's Sky doesn’t have to be a constant source of stress, even when you’re exploring the harshest corners of the galaxy. Start with the basic foraging methods when you’re new, build up passive farming systems as you unlock more blueprints, and invest in the right upgrades to cut down on how much oxygen you use over time. You’ll go from panicking when your oxygen bar dips below 50% to never even thinking about it on most trips. If you have a go-to oxygen trick we didn’t mention, drop it in the comments below to help other interstellar travelers.
