SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Isar Aerospace logo Isar Aerospace Designs, manufactures, and operates the Spectrum launch vehicle for dedicated and rideshare small satellite missions from European spaceports. vs Relativity Space Manufactures reusable medium-to-heavy-lift launch vehicles using large-scale metal 3D printing and autonomous robotics. Relativity Space logo
HEAD-TO-HEAD1 shared sector
Isar Aerospace Relativity Space
Founded 2018 2015
Headquarters Ottobrunn, Bavaria, Germany Long Beach, California, USA
Type private private
Status operating operating
Employees 400 1,285
Total funding $615M $1.4B
Latest round Convertible Note Series F
Sectors Launch Services Launch Services, Space Propulsion
Products listed 2 4
Federal contracts
Launches 8 (0%) 3 (0%)
Leaders listed Daniel Metzler, Josef Fleischmann, Stella Guillen Eric Schmidt, Maria Seferian, Kevin Wu
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Isar Aerospace and Relativity Space compare?

Both companies work in Launch Services. Isar Aerospace was founded in 2018 and Relativity Space in 2015.

Which is larger, Isar Aerospace or Relativity Space?

Relativity Space reports the larger workforce, with 1,285 employees versus 400.

Which has more launches, Isar Aerospace or Relativity Space?

Isar Aerospace leads with 8 tracked launches (0% success rate).

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