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 Ursa Major Technologies Designs and manufactures liquid rocket engines, solid rocket motors, and hypersonic propulsion systems for commercial launch and U.S. defense applications Ursa Major Technologies logo
HEAD-TO-HEAD1 shared sector
CesiumAstro Ursa Major Technologies
Founded 2017 2015
Headquarters Austin, Texas Colorado
Type private private
Status operating operating
Employees 318 291
Total funding $710.2M $549.4M
Latest round Series C Debt
Sectors Satellite Components & Subsystems, Satellite Communications, Satellite Manufacturing Space Propulsion, Satellite Components & Subsystems, Space Defense Systems
Products listed 15 6
Federal contracts — —
Launches — —
Leaders listed Shey Sabripour, Kenneth Smith, Chris Pappas III Chris Spagnoletti, Bill Nash, Justin Siebert
News mentions 26 18
SHARED SECTORS
Satellite Components & Subsystems
FREQUENTLY ASKED

How do CesiumAstro and Ursa Major Technologies compare?

Both companies work in Satellite Components & Subsystems. CesiumAstro was founded in 2017 and Ursa Major Technologies in 2015.

Which is larger, CesiumAstro or Ursa Major Technologies?

CesiumAstro reports the larger workforce, with 318 employees versus 291.

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