The Breathtaking Possibilities of Low Orbit Satellites

A Spanish startup, Kreios Space, is on the cusp of revolutionizing satellite propulsion with its air-breathing electric system, which captures residual atmospheric gases to generate thrust. This technology has significant implications for Earth observation, satellite communications, and space exploration.

Low orbit satellites face a major hurdle: atmospheric drag. As these spacecraft fly closer to Earth, they encounter increasingly intense friction from the upper atmosphere, leading to rapid orbital decay. To counteract this force, conventional satellites are equipped with large amounts of propellant, resulting in heavier, more expensive launches. Kreios’ system, however, promises to change this paradigm.

The company’s innovative technology will be tested on an upcoming mission in 2028, backed by Lithuania-based Kongsberg NanoAvionics. This development may seem like a game-changer for space enthusiasts, but it also raises important questions about the future of satellite development. With Kreios’ system allowing satellites to stay in very low Earth orbit (VLEO) without onboard propellant, the stakes are high.

One potential consequence is a shift towards more sustainable and efficient space operations. By leveraging atmospheric gases as propellant, satellites can gather sharper images of Earth, offer stronger signals, and require smaller components for equivalent performance. This reduces costs and minimizes the risk of collisions in crowded orbits. China has already demonstrated interest in VLEO with its national industry alliance, potentially marking a new era of space exploration.

Kreios’ CEO Adrián Senar notes that the company’s technology enables higher-resolution Earth observation, better satellite communications, more responsive missions, and a more sustainable orbital infrastructure. However, as we venture further into the low orbit frontier, governments and regulatory bodies must adapt to potential pitfalls such as overcrowding, interference, or exploitation.

The challenge ahead lies not only in developing this technology further but also in ensuring that it serves humanity’s best interests. As Kreios’ pioneering work sets the stage for a revolution in space technology, the possibilities are limitless – and worth careful consideration.