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 Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space Sierra Space logo
HEAD-TO-HEAD2 shared sectors
Impulse Space Sierra Space
Founded 2021 2021
Headquarters Redondo Beach, California, USA Louisville, Colorado, USA
Type private private
Status operating operating
Employees 292 1,072
Total funding $895M $2.2B
Latest round Series C Series C
Sectors Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 5 7
Federal contracts 1 ($6.5M)
Launches
Leaders listed Tom Mueller, Eric Romo, Kevin Miller Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 3 0
SHARED SECTORS
FREQUENTLY ASKED

How do Impulse Space and Sierra Space compare?

Both companies work in Satellite Manufacturing, Space Propulsion. Impulse Space was founded in 2021 and Sierra Space in 2021.

Which is larger, Impulse Space or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 292.

Which has more US federal contracts, Impulse Space or Sierra Space?

Sierra Space has been awarded more, with $6.5M across 1 awards.

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