Electric propulsion
EP systems — Hall thrusters, gridded ion
Companies
Aerojet Rocketdyne (L3Harris)
Propulsion Acquired
The RS-25 engines that launch humans to deep space.
IENAI Space
Propulsion Series A
Setting Space in Motion
MIT Space Propulsion Lab
Propulsion Bootstrapped
Morpheus Space
Satellites Series A
Mobility for satellites
Bellatrix Aerospace
Propulsion Series A
Electric propulsion from India
Exotrail
Propulsion Series B
Electric propulsion for agile constellations.
SETS Space
Propulsion Seed
Electric propulsion from first principles.
Moments
Astra achieved a major production milestone by shipping 110 satellite engine systems in 2025 while forecasting $45M revenue (700% growth YoY), breakeven EBITDA, and 100% on-orbit reliability. Parallel Rocket 4 progress included two dozen+ first-stage engine test campaigns, design maturity of ~75% first stage and 90%+ upper stage, and initial mobile spaceport design. The propulsion business is funding and de-risking the return-to-flight effort.
Jan 20, 2026Astra achieved a major production milestone by shipping 110 satellite engine systems in 2025 while forecasting $45M revenue (700% growth YoY), breakeven EBITDA, and 100% on-orbit reliability. Parallel Rocket 4 progress included two dozen+ first-stage engine test campaigns, design maturity of ~75% first stage and 90%+ upper stage, and initial mobile spaceport design. The propulsion business is funding and de-risking the return-to-flight effort.
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