SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Astranis logo Astranis 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-HEAD1 shared sector
Astranis Sierra Space
Founded 2015 2021
Headquarters California Louisville, Colorado
Type private private
Status operating operating
Employees 423 1,072
Total funding $754M $2.2B
Latest round Series D Series C
Sectors Satellite Communications, Navigation & Positioning, Satellite Manufacturing Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 4 7
Federal contracts 1 ($7.5M) 1 ($6.5M)
Launches
Leaders listed John Gedmark, Ryan McLinko, Mark Mesler Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 12 0
SHARED SECTORS
FREQUENTLY ASKED

How do Astranis and Sierra Space compare?

Both companies work in Satellite Manufacturing. Astranis was founded in 2015 and Sierra Space in 2021.

Which is larger, Astranis or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 423.

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

Astranis has been awarded more, with $7.5M across 1 awards.

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