SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Muon Space logo Muon Space Designs, builds, and operates mission-tailored LEO satellite constellations for Earth observation, climate monitoring, and national security applications vs Open Cosmos Designs, builds, launches, and operates small satellites for Earth observation, telecommunications, navigation, and science missions Open Cosmos logo
HEAD-TO-HEAD2 shared sectors
Muon Space Open Cosmos
Founded 2021 2015
Headquarters Mountain View, California Harwell, United Kingdom
Type private private
Status operating operating
Employees 197 177
Total funding $260.7M $57M
Latest round Series B Series B
Sectors Earth Observation & Remote Sensing, Geospatial Intelligence & Analytics, Satellite Manufacturing Satellite Manufacturing, Earth Observation & Remote Sensing, Satellite Communications
Products listed 6 4
Federal contracts
Launches
Leaders listed Jonny Dyer, Gregory Smirin, Pascal Stang Rafel Jorda Siquier, Jordi Barrera Ars, Aleix Megias Homar
News mentions 2 15
SHARED SECTORS
FREQUENTLY ASKED

How do Muon Space and Open Cosmos compare?

Both companies work in Earth Observation & Remote Sensing, Satellite Manufacturing. Muon Space was founded in 2021 and Open Cosmos in 2015.

Which is larger, Muon Space or Open Cosmos?

Muon Space reports the larger workforce, with 197 employees versus 177.

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.