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 Sidus Space Designs, manufactures, and operates LizzieSat small satellites, delivering AI-driven space-based data and hardware manufacturing services for defense and commercial customers. Sidus Space logo
HEAD-TO-HEAD1 shared sector
CesiumAstro Sidus Space
Founded 2017 2012
Headquarters Austin, Texas, USA Florida’s Space Coast
Type private public
Status operating operating
Employees 318 73
Total funding $710.2M
Latest round Series C
Sectors Satellite Components & Subsystems, Satellite Communications, Satellite Manufacturing Satellite Manufacturing, Earth Observation & Remote Sensing, Space Defense Systems
Products listed 15 3
Federal contracts
Launches
Leaders listed Shey Sabripour, Kenneth Smith, Chris Pappas III Carol Craig, Mark Mikolajczyk, Val Ojdanic
News mentions 26 9
SHARED SECTORS
FREQUENTLY ASKED

How do CesiumAstro and Sidus Space compare?

Both companies work in Satellite Manufacturing. CesiumAstro was founded in 2017 and Sidus Space in 2012.

Which is larger, CesiumAstro or Sidus Space?

CesiumAstro reports the larger workforce, with 318 employees versus 73.

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