SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
i-Space logo i-Space Develops solid and liquid-fueled launch vehicles including the Hyperbola series, with China's first privately-built orbital rocket and a reusable methane rocket in development 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
i-Space Sierra Space
Founded 2016 2021
Headquarters China Louisville, Colorado
Type private private
Status operating operating
Employees 1,072
Total funding $473.7M $2.2B
Latest round Series D++ Series C
Sectors Launch Services, Space Propulsion Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 3 7
Federal contracts 1 ($6.5M)
Launches 9 (44%)
Leaders listed Peng Xiaobo Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do i-Space and Sierra Space compare?

Both companies work in Space Propulsion. i-Space was founded in 2016 and Sierra Space in 2021.

Which has more US federal contracts, i-Space or Sierra Space?

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

Which has more launches, i-Space or Sierra Space?

i-Space leads with 9 tracked launches (44% success rate).

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