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 SpinLaunch Builds kinetic launch systems using ground-based centrifuges and develops the Meridian LEO broadband constellation for enterprise communications SpinLaunch logo
HEAD-TO-HEAD2 shared sectors
CesiumAstro SpinLaunch
Founded 2017 2014
Headquarters Austin, Texas Long Beach, California
Type private private
Status operating operating
Employees 318 27
Total funding $710.2M $249M
Latest round Series C Series C
Sectors Satellite Components & Subsystems, Satellite Communications, Satellite Manufacturing Launch Services, Satellite Communications, Satellite Manufacturing
Products listed 15 4
Federal contracts
Launches
Leaders listed Shey Sabripour, Kenneth Smith, Chris Pappas III Massimiliano Ladovaz, David Wrenn
News mentions 26 16
SHARED SECTORS
FREQUENTLY ASKED

How do CesiumAstro and SpinLaunch compare?

Both companies work in Satellite Communications, Satellite Manufacturing. CesiumAstro was founded in 2017 and SpinLaunch in 2014.

Which is larger, CesiumAstro or SpinLaunch?

CesiumAstro reports the larger workforce, with 318 employees versus 27.

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