Could this startup’s compact nuclear reactors revolutionize cancer detection?
Astral Systems aims to revolutionize medical isotope production with compact reactors using MSF tech.

Astral Systems, a startup based in Bristol, UK, co-founded by Talmon Firestone and Dr. Tom Wallce-Smith, is poised to address the rising demand for nuclear isotopes essential for medical cancer detection. By leveraging multistate fusion (MSF) technology, their compact reactors—small enough to fit on a desk—promise to increase the supply of these vital isotopes, which are becoming rarer as older reactors are decommissioned.
The startup has successfully raised over £4.5M with significant backing from Austria-based VC Speedinvest and UK-based Playfair. Astral's strategy revolves around employing lattice confinement fusion, a concept first discovered by NASA, to achieve unprecedented solid-state fuel densities. Their platform not only targets medical applications but also explores potential uses in hybrid nuclear energy, space exploration, and industrial sectors.
Dr. Tom Wallace-Smith emphasizes the advantage of decentralizing isotope production using compact reactors located in hospitals or production centers, thus reducing the dependence on centralized facilities. This approach, distinct from linear accelerated technologies, positions Astral at the forefront of innovation, carrying the high potential of 2020 physics into practical applications. Supported by commercial fusion facilities, Astral is already generating revenue and gaining recognition as a pioneer in deeptech, noted by Rick Hao of Speedinvest.