SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Antaris logo Antaris Provides a cloud-based software platform for satellite mission design, digital twin simulation, flight software, and constellation 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
Antaris Muon Space
Founded 2021 2021
Headquarters Los Altos, California Mountain View, California
Type private private
Status operating operating
Employees 21 197
Total funding $7.7M $260.7M
Latest round Seed Series B
Sectors Space Software & Mission Tools, Satellite Manufacturing Earth Observation & Remote Sensing, Geospatial Intelligence & Analytics, Satellite Manufacturing
Products listed 4 6
Federal contracts
Launches
Leaders listed Tom Barton, Karthik Govindhasamy, John Trionfo Jonny Dyer, Gregory Smirin, Pascal Stang
News mentions 0 2
SHARED SECTORS
FREQUENTLY ASKED

How do Antaris and Muon Space compare?

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

Which is larger, Antaris or Muon Space?

Muon Space reports the larger workforce, with 197 employees versus 21.

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