SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Antaris logo Antaris Provides a cloud-based software platform for satellite mission design, digital twin simulation, flight software, and constellation 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
Antaris Sidus Space
Founded 2021 2012
Headquarters Los Altos, California, USA Florida’s Space Coast
Type private public
Status operating operating
Employees 21 73
Total funding $7.7M
Latest round Seed
Sectors Space Software & Mission Tools, Satellite Manufacturing Satellite Manufacturing, Earth Observation & Remote Sensing, Space Defense Systems
Products listed 4 3
Federal contracts
Launches
Leaders listed Tom Barton, Karthik Govindhasamy, John Trionfo Carol Craig, Mark Mikolajczyk, Val Ojdanic
News mentions 0 9
SHARED SECTORS
FREQUENTLY ASKED

How do Antaris and Sidus Space compare?

Both companies work in Satellite Manufacturing. Antaris was founded in 2021 and Sidus Space in 2012.

Which is larger, Antaris or Sidus Space?

Sidus Space reports the larger workforce, with 73 employees versus 21.

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