SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Relativity Space logo Relativity Space Manufactures reusable medium-to-heavy-lift launch vehicles using large-scale metal 3D printing and autonomous robotics vs Space One Develops and launches the solid-fuel KAIROS small satellite launch vehicle from its private Spaceport Kii facility in southern Japan Space One logo
HEAD-TO-HEAD1 shared sector
Relativity Space Space One
Founded 2015 2018
Headquarters Long Beach, California Japan
Type private private
Status operating operating
Employees 1,285
Total funding $1.4B $28M
Latest round Series F Series A
Sectors Launch Services, Space Propulsion Launch Services, Spaceports & Range Services
Products listed 4 3
Federal contracts
Launches 3 (0%) 3 (0%)
Leaders listed Eric Schmidt, Maria Seferian, Kevin Wu Masakazu Toyoda, Nobuhiro Sekino
News mentions 0 99
SHARED SECTORS
FREQUENTLY ASKED

How do Relativity Space and Space One compare?

Both companies work in Launch Services. Relativity Space was founded in 2015 and Space One in 2018.

Which has more launches, Relativity Space or Space One?

Space One leads with 3 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.