At the edge of Earth's atmosphere, where drag has long been considered a death sentence for satellites, a Lithuanian manufacturer and a propulsion innovator are preparing to test whether that liability can be turned into fuel. Kreios Space has selected Kongsberg NanoAvionics to build a demonstration satellite that would scoop sparse atmospheric particles at very low Earth orbit and ionize them as propellant — a concept that, if validated, could fundamentally alter the economics of how humanity maintains its presence in space. The mission asks a quiet but consequential question: what if the obs
Kreios Space to Demo Air-Breathing Electric Propulsion in Low Earth Orbit
harvesting the very thing that has always been considered a liability
Mark
Why does very low Earth orbit matter so much? Why not just stay higher up where the air is thinner?
Mimi
Because lower orbits give you better resolution and faster response times. But the atmosphere at those altitudes creates drag that burns fuel constantly. You're fighting gravity the whole time. Air-breathing propulsion turns that problem into a resource.
Mark
So they're literally using the air as fuel?
Mimi
Exactly. They ionize the atmospheric particles and expel them. It's like having a gas station that follows you around. You never run out, as long as you stay in the right altitude band.
Mark
What's the catch? Why hasn't anyone done this before?
Mimi
The engineering is genuinely hard. You have to design systems that can operate in an environment that's hostile in ways most satellites never encounter. And the particles are so sparse that you need very efficient collection and ionization. It's theoretically sound, but making it work in practice is the challenge.
Mark
If this works, what changes?
Mimi
Everything about satellite economics shifts. Constellations become cheaper to maintain. Earth observation becomes more persistent and affordable. Communications latency drops. Entire business models that weren't viable suddenly become possible.
Mark
Who's watching this demonstration?
Mimi
Every satellite operator with ambitions in Earth observation or communications. If Kreios and Kongsberg pull this off, they won't be alone in the space for long. This is the kind of breakthrough that attracts competition quickly.
The Pulse
- Operating at very low Earth orbit has always been a losing battle against atmospheric drag — satellites burn through fuel fighting it, then die young and expensive.
- Kreios Space's air-breathing electric propulsion concept inverts that logic entirely, treating the drag-causing atmosphere as a harvestable resource rather than an enemy.
- The partnership with Kongsberg NanoAvionics — a manufacturer with dozens of satellites to its name — gives the concept its first real chance at hardware validation in actual space conditions.
- A demonstration mission will now expose the theory to the unforgiving realities of vacuum, radiation, and thermal extremes, with success or failure both carrying significant data.
- Satellite operators across Earth observation and communications sectors are watching closely, knowing a working system could slash launch mass, extend operational lifespans, and unlock persistently lower orbits.
- If the demonstration holds, the timeline from proof-of-concept to deployed constellation could compress from decades into years — a rare acceleration in an industry that rarely moves fast enough.
At the edge of Earth's atmosphere, where drag has long been considered a death sentence for satellites, a Lithuanian manufacturer and a propulsion innovator are preparing to test whether that liability can be turned into fuel. Kreios Space has selected Kongsberg NanoAvionics to build a demonstration satellite that would scoop sparse atmospheric particles at very low Earth orbit and ionize them as propellant — a concept that, if validated, could fundamentally alter the economics of how humanity maintains its presence in space. The mission asks a quiet but consequential question: what if the obstacle was the answer all along?
Kreios Space has chosen Kongsberg NanoAvionics, a Lithuanian satellite manufacturer, to build and fly the hardware that will put air-breathing electric propulsion to its first real test. The concept is as counterintuitive as it is elegant: rather than carrying all its propellant from launch, a satellite would harvest the sparse atmospheric particles still present at very low Earth orbit — the same particles that generate drag and have historically made those altitudes impractical — ionize them, and use them as thrust. The very thing that kills satellites becomes the thing that sustains them.
The economic logic compounds quickly. Every kilogram of fuel eliminated is mass that doesn't need to be launched. Every additional year of satellite life is a year an operator avoids replacement costs. Very low Earth orbit has always demanded relentless station-keeping burns just to survive; air-breathing propulsion could make those altitudes not merely survivable but commercially attractive.
The appeal is sharpest for Earth observation and communications. Lower orbits produce sharper imagery, faster revisit times, and reduced signal latency — but the operational costs have made sustained presence there prohibitive. A successful demonstration could rewrite that calculus, opening the door to persistent surveillance, rapid-response imaging, and low-latency global connectivity that have previously been too expensive to maintain.
Kongsberg NanoAvionics brings deep small-satellite and propulsion integration experience to the partnership, while Kreios has concentrated specifically on developing the air-breathing core technology. Together they represent the pairing the commercial space sector has learned to rely on: the innovator and the builder. What comes next is the hard part — launching, reaching orbit, and finding out whether the theory survives contact with the actual environment of space. Success would validate a technology with the potential to reshape satellite design and deployment for a generation. Failure would still illuminate the path forward.
Kreios Space has found its test platform. The company has tapped Kongsberg NanoAvionics, a satellite manufacturer based in Lithuania, to build and fly the hardware that will demonstrate whether air-breathing electric propulsion can actually work in the thin, hostile environment of very low Earth orbit.
The concept itself is elegant in its ambition. Rather than carrying all the propellant a satellite needs for its entire operational life, an air-breathing system would do something counterintuitive: it would scoop up the sparse atmospheric particles that still exist at ultra-low altitudes—regions where most satellites fear to venture because the drag is supposed to kill them. The system would ionize those particles and use them as propellant, effectively harvesting the very thing that has always been considered a liability. If it works, a satellite could operate far longer on far less fuel than traditional electric propulsion systems allow.
The implications ripple outward quickly. Satellite constellations are expensive to build and maintain. Every kilogram of fuel a satellite carries is mass that costs money to launch. Every year a satellite can operate without refueling is a year the operator doesn't have to replace it. Very low Earth orbit—the altitudes where this technology would operate—has always been a frontier that required constant station-keeping burns to fight atmospheric drag. Air-breathing propulsion could transform that frontier into something economically viable.
For Earth observation, the math becomes particularly compelling. Lower orbits mean sharper images and faster revisit times. Communications satellites at very low altitudes could offer lower latency. But the operational costs have always been prohibitive. A successful demonstration by Kreios and Kongsberg NanoAvionics could change that calculation entirely, opening new possibilities for persistent surveillance, rapid-response imaging, and low-latency global communications that have previously been too expensive to sustain.
Kongsberg NanoAvionics brings substantial credibility to the effort. The company has built dozens of satellites and has deep experience with small-satellite platforms and propulsion integration. Kreios Space, meanwhile, has focused specifically on this air-breathing concept, developing the core technology that would make the system function. The partnership pairs the innovator with the manufacturer—a structure that has worked well in the commercial space sector.
What happens next is a demonstration mission. The satellite will launch, reach very low Earth orbit, and attempt to operate using atmospheric particles as propellant. It will be the first real test of whether the theory holds up when exposed to the actual vacuum, radiation, and thermal extremes of space. Success would validate a technology that could reshape how satellites are designed, deployed, and operated. Failure would provide crucial data about what needs to change before the next attempt.
The space industry has learned to move quickly on promising concepts. If this demonstration succeeds, the path from proof-of-concept to operational deployment could be measured in years rather than decades. Satellite operators are already watching. The economics of very low Earth orbit have always been marginal. A working air-breathing propulsion system could flip that equation entirely.
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