Kick-off Announcement: J-StarX – Japanese SpaceTech Accelerator

October 2025

We’re thrilled to launch J-StarX: Japanese SpaceTech Accelerator, a pioneering collaboration between JETRO Startup, JAXA: Japan Aerospace Exploration Agency and Starburst, the world’s first and largest aerospace & defense accelerator.

Together, we’re empowering the next generation of Japanese space innovators through a tailor-made global acceleration journey.

Over the next weeks, selected startups will immerse themselves in the French and UK space ecosystems, connecting with key partners, investors, and industry leaders to unlock new opportunities for international growth and collaboration.

Selected startups shaping the future of space:

🔹 VISION IV Co., Ltd. – Synthetic diamond tech for advanced sensors & semiconductors
🔹 BULL Co., Ltd. – Passive post-mission disposal for rockets and satellites
🔹 JAOPS – Integrated space operations tools & training
🔹 ElevationSpace Inc. – Return-capable small spacecraft for microgravity R&D
🔹 Letara – Hybrid propulsion with safe, cost-efficient solid fuel
🔹 Thermalytica Inc. – Carbon-reducing insulation tech for space and sustainable industries
🔹 Tenchijin – AI-driven land evaluation using satellite data

At Starburst, we connect startups, corporates, investors, and agencies across the global aerospace ecosystem, accelerating innovation, de-risking technology adoption, and building bridges for sustainable space growth.

To connect with any of these pioneering startups or learn more about the program, contact us at: 📩 jetro-2025@starburst.aero