SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
OneSpace logo OneSpace Develops small solid-fuel launch vehicles and rocket propulsion systems, and provides rapid-response commercial launch services for microsatellite and nanosatellite customers 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
OneSpace Sierra Space
Founded 2015 2021
Headquarters Beijing, China Louisville, Colorado, USA
Type private private
Status operating operating
Employees 140 1,072
Total funding $120M $2.2B
Latest round Series C Series C
Sectors Launch Services, Space Propulsion Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 6 7
Federal contracts 1 ($6.5M)
Launches 1 (0%)
Leaders listed Shu Chang, David Chen Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do OneSpace and Sierra Space compare?

Both companies work in Space Propulsion. OneSpace was founded in 2015 and Sierra Space in 2021.

Which is larger, OneSpace or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 140.

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

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

Which has more launches, OneSpace or Sierra Space?

OneSpace leads with 1 tracked launches (0% success rate).

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