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 Space Solar Develops space-based solar power technology to beam continuous clean energy from geostationary orbit to Earth via wireless power transmission Space Solar logo
HEAD-TO-HEAD1 shared sector
Momentus Space Solar
Founded 2017 2022
Headquarters San Jose, California Didcot, United Kingdom
Type public private
Status operating operating
Employees 41 10
Total funding $508K
Latest round Seed
Sectors Space Transportation & Logistics, In-Orbit Servicing & Assembly, Satellite Manufacturing Satellite Manufacturing, Satellite Components & Subsystems
Products listed 3 2
Federal contracts
Launches
Leaders listed John C. Rood, Rob Schwarz, Lon Ensler Martin Soltau, Sam Adlen, David Homfray
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Momentus and Space Solar compare?

Both companies work in Satellite Manufacturing. Momentus was founded in 2017 and Space Solar in 2022.

Which is larger, Momentus or Space Solar?

Momentus reports the larger workforce, with 41 employees versus 10.

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