SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
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 Revolution Space Develops in-space electric propulsion systems and advanced spacecraft solutions for commercial and defense satellite operators Revolution Space logo
HEAD-TO-HEAD1 shared sector
Eta Space Revolution Space
Founded 2019 2014
Headquarters Rockledge, Florida Charlestown, Massachusetts
Type private private
Status operating operating
Employees 10 38
Total funding $27.2M $100.8M
Latest round Grant Venture
Sectors Space Transportation & Logistics, Lunar Services, Space Propulsion Space Propulsion, Satellite Components & Subsystems
Products listed 6 1
Federal contracts
Launches
Leaders listed Dr. William Notardonato Darren Garber, PhD, Darren Womacks, Paul Richards
News mentions 0 2
SHARED SECTORS
FREQUENTLY ASKED

How do Eta Space and Revolution Space compare?

Both companies work in Space Propulsion. Eta Space was founded in 2019 and Revolution Space in 2014.

Which is larger, Eta Space or Revolution Space?

Revolution Space reports the larger workforce, with 38 employees versus 10.

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