# Muon Space

> Muon Space is a Mountain View-based end-to-end space systems company that designs, builds, and operates mission-optimized satellite constellations for climate, defense, and Earth intelligence customers. Its Halo platform pairs the modular MuSat spacecraft bus with MuOS middleware and the MuSim digital twin, anchoring high-profile programs like Google's FireSat wildfire constellation and a $44.6M U.S. Space Force environmental monitoring agreement.

- **Founded:** 2021
- **Headquarters:** Mountain View, California, United States
- **Founders:** Jonathan (Jonny) Dyer (Co-founder & CEO), Dan McCleese (Co-founder & Chief Scientist), Pascal Stang (Co-founder & CTO), Reuben Rohrschneider (Co-founder)
- **Team size:** ~210 employees
- **Products:** Halo Platform, MuSat, MuSat XL, MuSim, MuOS
- **Notable:** FireSat named to TIME's Best Inventions of 2025, Closed $146M total Series B by mid-2025, Launched MuSat-2 (March 2024) and MuSat-3 (August 2024)

## Products & services

- **Halo Platform** — Vertically integrated space-systems platform combining the MuSat bus, MuOS middleware, and MuSim digital twin into a configurable end-to-end constellation.
- **MuSat** — Modular spacecraft bus scaling from sub-ESPA class to 500kg+ kW-class missions through swappable avionics, power, and payload interfaces.
- **MuSat XL** — 500 kg-class high-performance bus for demanding LEO missions; Hubble Network is the first announced XL customer.
- **MuSim** — Digital engineering and mission simulation environment used to design and de-risk constellation behavior before launch.
- **MuOS** — Data-centric onboard middleware enabling edge compute and software-defined payload orchestration in orbit.
- **FireSat** — Wildfire-detection constellation built with Earth Fire Alliance and Google.org - designed to scan Earth every ~20 minutes and detect fires as small as 5x5 meters.

## Achievements

- FireSat named to TIME's Best Inventions of 2025
- Closed $146M total Series B by mid-2025
- Launched MuSat-2 (March 2024) and MuSat-3 (August 2024)
- FireSat Protoflight launched March 2025; first-light thermal images released June 2025
- Awarded $44.6M U.S. Space Force SBIR Phase III OTA in October 2025
- Acquired Starlight Engines propulsion startup in 2025

## Latest updates

- **2026-02** — Announced a pivotal year of government and commercial mission execution with multiple FireSat operational launches scheduled.
- **2025-10** — Awarded $44.6M Space Force SBIR Phase III OTA for dual-use environmental monitoring.
- **2025-09** — Unveiled MuSat XL platform; Hubble Network signed as first customer.
- **2025-06** — Closed $89.5M Series B1 extension; total Series B reaches $146M. Released FireSat first-light images.
- **2025-03** — FireSat Protoflight launched into orbit.

## Links

- Website: https://muonspace.com
- LinkedIn: https://www.linkedin.com/company/muon-space
- Twitter/X: https://twitter.com/muonspace

---

Profile page: https://yespress.io/muon-space
Published by YesPress — https://yespress.io
Last updated: 2026-05-28