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 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
CesiumAstro Open Cosmos
Founded 2017 2015
Headquarters Austin, Texas Harwell, United Kingdom
Type private private
Status operating operating
Employees 318 177
Total funding $710.2M $57M
Latest round Series C Series B
Sectors Satellite Components & Subsystems, Satellite Communications, Satellite Manufacturing Satellite Manufacturing, Earth Observation & Remote Sensing, Satellite Communications
Products listed 15 4
Federal contracts
Launches
Leaders listed Shey Sabripour, Kenneth Smith, Chris Pappas III Rafel Jorda Siquier, Jordi Barrera Ars, Aleix Megias Homar
News mentions 26 15
SHARED SECTORS
FREQUENTLY ASKED

How do CesiumAstro and Open Cosmos compare?

Both companies work in Satellite Communications, Satellite Manufacturing. CesiumAstro was founded in 2017 and Open Cosmos in 2015.

Which is larger, CesiumAstro or Open Cosmos?

CesiumAstro reports the larger workforce, with 318 employees versus 177.

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