SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Inversion Space logo Inversion Space Develops autonomous reentry capsules for on-demand cargo delivery from orbit to anywhere on Earth in under an hour 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-HEAD1 shared sector
Inversion Space Portal Space Systems
Founded 2021 2021
Headquarters Los Angeles, California Bothell, Washington
Type private private
Status operating operating
Employees 45 22
Total funding $54.1M $20M
Latest round Series A Seed
Sectors Space Transportation & Logistics, Space Defense Systems Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion
Products listed 2 3
Federal contracts
Launches
Leaders listed Justin Fiaschetti, Austin Briggs Jeff Thornburg, Ian Vorbach, Prashaanth Ravindran
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Inversion Space and Portal Space Systems compare?

Both companies work in Space Transportation & Logistics. Inversion Space was founded in 2021 and Portal Space Systems in 2021.

Which is larger, Inversion Space or Portal Space Systems?

Inversion Space reports the larger workforce, with 45 employees versus 22.

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