SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
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 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
Impulse Space Relativity Space
Founded 2021 2015
Headquarters Redondo Beach, California, USA Long Beach, California, USA
Type private private
Status operating operating
Employees 292 1,285
Total funding $895M $1.4B
Latest round Series C Series F
Sectors Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion Launch Services, Space Propulsion
Products listed 5 4
Federal contracts
Launches 3 (0%)
Leaders listed Tom Mueller, Eric Romo, Kevin Miller Eric Schmidt, Maria Seferian, Kevin Wu
News mentions 3 0
SHARED SECTORS
FREQUENTLY ASKED

How do Impulse Space and Relativity Space compare?

Both companies work in Space Propulsion. Impulse Space was founded in 2021 and Relativity Space in 2015.

Which is larger, Impulse Space or Relativity Space?

Relativity Space reports the larger workforce, with 1,285 employees versus 292.

Which has more launches, Impulse Space or Relativity Space?

Relativity Space leads with 3 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.