Muon Space

Overview Muon Space is a U.S. space-systems company that designs, builds, and operates low‑Earth‑orbit satellite constellations for Earth intelligence, environmental monitoring, and national‑security missions. Founded in 2021 and headquartered in Mountain View, California, the company offers an end‑to‑end model that spans spacecraft design and manufacturing, custom payload integration, ground segment, and on‑orbit operations. Muon’s integrated technology stack, branded Halo™, is built to accelerate time‑to‑orbit and deliver high‑performance constellations at scale. Platforms and Technology • Satellite platforms: The flight‑proven MuSat class (≈200‑kg) underpins early missions; in August 2025 Muon introduced MuSat XL, a 500‑kg‑class platform with higher payload power, data throughput, and pointing performance for demanding EO, RF, and networking missions. • Software‑defined operations: The Halo stack couples modular “CarefulCOTS” hardware with service‑oriented flight and ground software for rapid tasking, collection, and data backhaul. • Sensors and payloads: Muon develops and integrates advanced payloads, including multispectral electro‑optical/infrared instruments (e.g., Quickbeam variants for weather and wildfire monitoring) and third‑party sensors for commercial partners. Programs and Customers (selected) • FireSat: A dedicated wildfire detection and monitoring program developed with the nonprofit Earth Fire Alliance and supported by partners including Google Research. A protoflight satellite launched in March 2025 and returned “first‑light” infrared imagery in June 2025; the roadmap targets an initial operational block in 2026 and constellation scale‑up through the decade. • Space‑based Environmental Monitoring (SBEM): In October 2025 Muon won a Phase III OTA award to develop and demonstrate a three‑satellite dual‑use SBEM capability for cloud characterization, theater weather imagery, and global wildfire detection; the design employs an enhanced Quickbeam‑SBEM multispectral IR sensor. • National programs: Muon was selected by the Space Development Agency for its HALO vendor pool in 2024 and received Stage II tasking from the National Reconnaissance Office in May 2025 for commercial electro‑optical capabilities. • Commercial missions: Muon’s Halo platform is being used by partners including Hydrosat (VanZyl‑2 thermal/multispectral satellite launched in June 2025), Hubble Network (first customer for the MuSat XL platform to scale a global Bluetooth‑from‑space service), and SNC under a 2024 agreement to develop three satellites for the Vindler™ RF program. Launch History (selected) • MuSat‑1 — launched June 12, 2023 (SpaceX Transporter‑8 rideshare) as Muon’s first on‑orbit spacecraft. • MuSat‑2 — launched March 2024 (SpaceX Transporter‑10), established communications and began weather‑product demonstrations. • FireSat Protoflight — launched March 14, 2025 (SpaceX Transporter‑13), returned multispectral IR “first‑light” imagery in June 2025. • Hydrosat VanZyl‑2 — launched June 24, 2025 (SpaceX Transporter‑14) on the Halo platform. Facilities and Footprint Muon Space operates from Silicon Valley, with headquarters and engineering in Mountain View and an expanded production footprint announced in 2025 to support higher‑rate spacecraft manufacturing and payload integration. Financing In 2024 the company closed a $56.7 million Series B and surpassed $100 million in booked customer contracts. In June 2025 Muon completed an oversubscribed Series B extension and credit facilities, bringing total Series B funding to $146 million to scale production and missions. Positioning and Strategy Muon Space positions itself as an end‑to‑end provider for multi‑mission LEO constellations, combining vertically integrated spacecraft, purpose‑built sensors, and a software‑defined operations layer. Near‑term priorities include executing SBEM prototype satellites, expanding FireSat, delivering commercial partner missions on the Halo platform, and ramping manufacturing capacity for constellation‑scale deployments.