SpaceRyde
Shut down
What they do:
The Rocket Network: Sustainable & On-Demand Delivery Anywhere in Space
Quick facts:
HQ: San Francisco, CA, United States
Top Space & Defense Startups in California
This list has 75 startups and was last updated on Oct 15, 2026. 30 of them are hiring right now. Biggest hubs: San Francisco (47) and Los Angeles (23). Largest teams: Relativity Space, Astranis, and Momentus. Latest round: Vanguard Defense raised $6.28M (Mar 10, 2026).
75 startupsPage 3 of 3
Exosonic, Inc.
Shut down
What they do:
Developing supersonic UAVs as a pathway to quiet supersonic flight
Quick facts:
HQ: Los Angeles, CA, United States
Bagaveev Corporation
Shut down
What they do:
Launch small satellites
Quick facts:
HQ: San Francisco, CA, United States