SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Momentus logo Momentus Operates orbital service vehicles and manufactures satellite buses for in-space transportation, hosted payloads, and proximity operations vs Sidus Space Designs, manufactures, and operates LizzieSat small satellites, delivering AI-driven space-based data and hardware manufacturing services for defense and commercial customers Sidus Space logo
HEAD-TO-HEAD1 shared sector
Momentus Sidus Space
Founded 2017 2012
Headquarters San Jose, California Florida’s Space Coast, Florida
Type public public
Status operating operating
Employees 41 73
Total funding
Latest round
Sectors Space Transportation & Logistics, In-Orbit Servicing & Assembly, Satellite Manufacturing Satellite Manufacturing, Earth Observation & Remote Sensing, Space Defense Systems
Products listed 3 3
Federal contracts
Launches
Leaders listed John C. Rood, Rob Schwarz, Lon Ensler Carol Craig, Mark Mikolajczyk, Val Ojdanic
News mentions 0 9
SHARED SECTORS
FREQUENTLY ASKED

How do Momentus and Sidus Space compare?

Both companies work in Satellite Manufacturing. Momentus was founded in 2017 and Sidus Space in 2012.

Which is larger, Momentus or Sidus Space?

Sidus Space reports the larger workforce, with 73 employees versus 41.

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