SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
CesiumAstro logo CesiumAstro Designs, manufactures, and integrates software-defined phased array communications systems, payloads, and satellites for space, airborne, and ground platforms vs Muon Space Designs, builds, and operates mission-tailored LEO satellite constellations for Earth observation, climate monitoring, and national security applications Muon Space logo
HEAD-TO-HEAD1 shared sector
CesiumAstro Muon Space
Founded 2017 2021
Headquarters Austin, Texas Mountain View, California
Type private private
Status operating operating
Employees 318 197
Total funding $710.2M $260.7M
Latest round Series C Series B
Sectors Satellite Components & Subsystems, Satellite Communications, Satellite Manufacturing Earth Observation & Remote Sensing, Geospatial Intelligence & Analytics, Satellite Manufacturing
Products listed 15 6
Federal contracts — —
Launches — —
Leaders listed Shey Sabripour, Kenneth Smith, Chris Pappas III Jonny Dyer, Gregory Smirin, Pascal Stang
News mentions 26 2
SHARED SECTORS
Satellite Manufacturing
FREQUENTLY ASKED

How do CesiumAstro and Muon Space compare?

Both companies work in Satellite Manufacturing. CesiumAstro was founded in 2017 and Muon Space in 2021.

Which is larger, CesiumAstro or Muon Space?

CesiumAstro reports the larger workforce, with 318 employees versus 197.

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