SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Busek logo Busek Designs and manufactures electric propulsion systems for spacecraft, including Hall effect, electrospray, RF ion, and green monopropellant thrusters vs Eta Space Develops cryogenic propellant management systems for in-space storage, transfer, and refueling, and liquid hydrogen infrastructure for terrestrial energy applications. Eta Space logo
HEAD-TO-HEAD1 shared sector
Busek Eta Space
Founded 1985 2019
Headquarters 11 Tech Circle, Natick, MA 01760 Rockledge, Florida, USA
Type private private
Status operating operating
Employees 107 10
Total funding $200K $27.2M
Latest round Grant Grant
Sectors Space Propulsion, Satellite Components & Subsystems Space Transportation & Logistics, Lunar Services, Space Propulsion
Products listed 9 6
Federal contracts
Launches
Leaders listed Vlad Hruby, James Szabo, John Meikle Dr. William Notardonato
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Busek and Eta Space compare?

Both companies work in Space Propulsion. Busek was founded in 1985 and Eta Space in 2019.

Which is larger, Busek or Eta Space?

Busek reports the larger workforce, with 107 employees versus 10.

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