SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
ClearSpace logo ClearSpace Designs and operates robotic spacecraft for active debris removal, satellite life extension, and in-orbit inspection services vs Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space Sierra Space logo
HEAD-TO-HEAD1 shared sector
ClearSpace Sierra Space
Founded 2018 2021
Headquarters Renens, Luxembourg Louisville, Colorado
Type private private
Status operating operating
Employees 92 1,072
Total funding $36M $2.2B
Latest round Series A+ Series C
Sectors Space Sustainability & Debris Removal, In-Orbit Servicing & Assembly, Satellite Manufacturing Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 5 7
Federal contracts 1 ($6.5M)
Launches
Leaders listed Luc Piguet, Muriel Richard, Valéry Gineste Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do ClearSpace and Sierra Space compare?

Both companies work in Satellite Manufacturing. ClearSpace was founded in 2018 and Sierra Space in 2021.

Which is larger, ClearSpace or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 92.

Which has more US federal contracts, ClearSpace or Sierra Space?

Sierra Space has been awarded more, with $6.5M across 1 awards.

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