SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Impulse Space logo Impulse Space Designs and operates orbital transfer vehicles that move payloads between orbits using high-thrust chemical propulsion, delivering to GEO in under a day vs Portal Space Systems Manufactures solar-thermal-propelled spacecraft buses for high-delta-v, multi-orbit maneuverability and tactically responsive space operations Portal Space Systems logo
HEAD-TO-HEAD3 shared sectors
Impulse Space Portal Space Systems
Founded 2021 2021
Headquarters Redondo Beach, California Bothell, Washington
Type private private
Status operating operating
Employees 292 22
Total funding $895M $20M
Latest round Series C Seed
Sectors Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion
Products listed 5 3
Federal contracts
Launches
Leaders listed Tom Mueller, Eric Romo, Kevin Miller Jeff Thornburg, Ian Vorbach, Prashaanth Ravindran
News mentions 3 0
SHARED SECTORS
FREQUENTLY ASKED

How do Impulse Space and Portal Space Systems compare?

Both companies work in Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion. Impulse Space was founded in 2021 and Portal Space Systems in 2021.

Which is larger, Impulse Space or Portal Space Systems?

Impulse Space reports the larger workforce, with 292 employees versus 22.

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