SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Eta Space logo Eta Space Develops cryogenic propellant management systems for in-space storage, transfer, and refueling, and liquid hydrogen infrastructure for terrestrial energy applications. 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-HEAD2 shared sectors
Eta Space Zeno Power
Founded 2019 2018
Headquarters Rockledge, Florida, USA Washington, District of Columbia, USA
Type private private
Status operating operating
Employees 10 79
Total funding $27.2M 94870000
Latest round Grant Series B
Sectors Space Transportation & Logistics, Lunar Services, Space Propulsion Satellite Components & Subsystems, Lunar Services, Space Propulsion
Products listed 6 2
Federal contracts
Launches
Leaders listed Dr. William Notardonato Tyler Bernstein, Jonathan Segal, Jacob Matthews
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Eta Space and Zeno Power compare?

Both companies work in Lunar Services, Space Propulsion. Eta Space was founded in 2019 and Zeno Power in 2018.

Which is larger, Eta Space or Zeno Power?

Zeno Power reports the larger workforce, with 79 employees versus 10.

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