Pale Blue

Pale Blue is a Japanese space technology company spun out from the University of Tokyo in 2020, specializing in the development and manufacture of propulsion systems for small satellites. The company produces water-based electric propulsion systems — including water ion thrusters, water resistojets, and hall thrusters — that use water as a safe, non-toxic propellant. Pale Blue has achieved in-orbit operations across numerous missions, building a proven track record with partners including JAXA, Sony Group, and others. The company operates a mass production facility in Tsukuba, Japan, and serves satellite integrators and operators worldwide, addressing the growing global demand for reliable small satellite propulsion from Low Earth Orbit to deep space.