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Pale Blue makes water-based thrusters for satellites and other aerospace applications.
Founded in 2020 and based in Chiba, Japan, Pale Blue develops water-based thrusters for satellites of different sizes. Its products include PBR and PBI models and a Water Hall-effect Thruster designed for smallsats up to 700 kg. In August 2025, it raised JPY 1.5 billion in Series C funding led by Nissay Capital, with aSTART, Mitsui Sumitomo Insurance Venture Capital, ITOCHU Technology Ventures and Global Brain participating.
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