SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Magdrive logo Magdrive Develops high-thrust electric plasma propulsion systems for satellites and spacecraft using pulsed power and solid metal propellant. 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
Magdrive Sierra Space
Founded 2020 2021
Headquarters Harwell Campus, Oxfordshire, United Kingdom Louisville, Colorado, USA
Type private private
Status operating operating
Employees 37 1,072
Total funding $10.5M $2.2B
Latest round Seed Series C
Sectors Space Propulsion, Satellite Components & Subsystems Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 3 7
Federal contracts 1 ($6.5M)
Launches
Leaders listed Mark Stokes, Dr Thomas Clayson, Harald Nieder Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Magdrive and Sierra Space compare?

Both companies work in Space Propulsion. Magdrive was founded in 2020 and Sierra Space in 2021.

Which is larger, Magdrive or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 37.

Which has more US federal contracts, Magdrive 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.