Canadian Space Radiation Technology to Support Health and Safety — and Benefits Back on Earth
Once there was…
A quiet but persistent threat that every astronaut had to live with: space radiation. Beyond the protective shield of Earth’s atmosphere, radiation becomes one of the defining challenges of human spaceflight—especially for missions lasting six months or more.
Every day,
Astronauts working and living in space vehicles face a complex radiation environment that researchers are still working to fully understand. Among the most concerning components is neutron radiation, which makes up about 30% of total radiation in space vehicles. It’s especially harmful because it can cause serious biological damage and requires specialized protective measures.
Canada has developed significant expertise in radiation detection experiments on the International Space Station, including MOSFET, EVARM, Radi-N, and Radi-N2. These efforts have expanded what we know—but they’ve also highlighted a key limitation: earlier technologies were often larger or mostly relied on human intervention, which can restrict the volume and continuity of data collected.
Until one day,
On February 26, 2026, in Longueuil, Quebec, the Canadian Space Agency shared a major step forward.
In a CSA news release, the Honourable Mélanie Joly, Minister of Industry and Minister responsible for Canada Economic Development for Quebec Regions, announced that Bubble Technology Industries has been awarded a $5.5 million contract to develop the **Canadian Active Neutron Spectrometer (CANS)**—a compact, autonomous instrument designed to measure neutron radiation exposure in space.
Because of that,
CANS is designed to do something astronauts and researchers have needed for a long time: measure neutron radiation continuously and autonomously. That combination matters. With more consistent measurement and less dependence on human operation, CANS will generate richer data streams for researchers back on Earth—helping them better understand how neutron radiation affects astronauts, especially on longer missions.
The aim is practical and urgent: use this improved understanding to develop better measures to reduce risks associated with exposure to space radiation.
Because of that,
What happens in orbit doesn’t stay in orbit.
The CSA emphasized that the data generated by CANS could also have powerful applications on Earth, including:
- Cancer therapy
- Radiation protection for aircrews
- Nuclear threat detection and public safety
- Nuclear and particle physics research
And the stakes are deeply human. Studying radiation exposure more precisely can help protect astronauts—and also people on Earth exposed to high radiation levels—from long-term health issues such as cataracts, bone marrow damage, and an increased risk of cancer.
As Lisa Campbell, President of the Canadian Space Agency, put it:
“The Canadian space sector is at the forefront of cutting-edge space technology. This radiation-monitoring instrument, the product of years of experimentation and innovation, reflects the strengths of our scientists, engineers, and industry leaders. As we look to the Moon and beyond, this homegrown technology will provide researchers with practical data to help protect astronauts from harmful radiation and offer concrete benefits on Earth for Canadians working in the nuclear and medical fields.”
Ever since then,
Canada’s role in space-based health and safety research has taken a notable step forward—building on the foundation of ISS participation and years of radiation-detection expertise, while moving toward more autonomous, compact, and data-rich monitoring that supports the next era of exploration: the Moon and beyond.
CANS represents a clear direction: protect people in extreme environments through better measurement—and translate that knowledge into benefits that reach hospitals, safety systems, researchers, and workers here on Earth.
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