SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
CesiumAstro logo CesiumAstro Designs, manufactures, and integrates software-defined phased array communications systems, payloads, and satellites for space, airborne, and ground platforms. vs Zeno Power Develops radioisotope power systems that convert heat from decaying isotopes into years of reliable electricity for lunar surface and seabed missions. Zeno Power logo
HEAD-TO-HEAD1 shared sector
CesiumAstro Zeno Power
Founded 2017 2018
Headquarters Austin, Texas, USA Washington, District of Columbia, USA
Type private private
Status operating operating
Employees 318 79
Total funding $710.2M 94870000
Latest round Series C Series B
Sectors Satellite Components & Subsystems, Satellite Communications, Satellite Manufacturing Satellite Components & Subsystems, Lunar Services, Space Propulsion
Products listed 15 2
Federal contracts — —
Launches — —
Leaders listed Shey Sabripour, Kenneth Smith, Chris Pappas III Tyler Bernstein, Jonathan Segal, Jacob Matthews
News mentions 26 0
SHARED SECTORS
Satellite Components & Subsystems
FREQUENTLY ASKED

How do CesiumAstro and Zeno Power compare?

Both companies work in Satellite Components & Subsystems. CesiumAstro was founded in 2017 and Zeno Power in 2018.

Which is larger, CesiumAstro or Zeno Power?

CesiumAstro reports the larger workforce, with 318 employees versus 79.

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