SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Momentus logo Momentus Operates orbital service vehicles and manufactures satellite buses for in-space transportation, hosted payloads, and proximity operations 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
Momentus Muon Space
Founded 2017 2021
Headquarters San Jose, California Mountain View, California
Type public private
Status operating operating
Employees 41 197
Total funding $260.7M
Latest round Series B
Sectors Space Transportation & Logistics, In-Orbit Servicing & Assembly, Satellite Manufacturing Earth Observation & Remote Sensing, Geospatial Intelligence & Analytics, Satellite Manufacturing
Products listed 3 6
Federal contracts
Launches
Leaders listed John C. Rood, Rob Schwarz, Lon Ensler Jonny Dyer, Gregory Smirin, Pascal Stang
News mentions 0 2
SHARED SECTORS
FREQUENTLY ASKED

How do Momentus and Muon Space compare?

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

Which is larger, Momentus or Muon Space?

Muon Space reports the larger workforce, with 197 employees versus 41.

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