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 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
Relativity Space Zeno Power
Founded 2015 2018
Headquarters Long Beach, California Washington, District of Columbia
Type private private
Status operating operating
Employees 1,285 79
Total funding $1.4B $94.9M
Latest round Series F Series B
Sectors Launch Services, Space Propulsion Satellite Components & Subsystems, Lunar Services, Space Propulsion
Products listed 4 2
Federal contracts
Launches 3 (0%)
Leaders listed Eric Schmidt, Maria Seferian, Kevin Wu Tyler Bernstein, Jonathan Segal, Jacob Matthews
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Relativity Space and Zeno Power compare?

Both companies work in Space Propulsion. Relativity Space was founded in 2015 and Zeno Power in 2018.

Which is larger, Relativity Space or Zeno Power?

Relativity Space reports the larger workforce, with 1,285 employees versus 79.

Which has more launches, Relativity Space or Zeno Power?

Relativity Space 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.