SubsidiaryUpdated Aug 1, 2026

Apollo Fusion

Electric-propulsion-system developer and supplier for satellite and orbital-transfer-vehicle applications; its capabilities were acquired and internalized by Astra.

Apollo Fusion developed the Apollo Constellation Engine (ACE), an integrated Hall-effect electric propulsion system for satellites. The company was acquired by Astra in 2021 and its propulsion capability became part of Astra’s satellite-engine business.

Principal supply-chain role02 · Space Hardware

Satellites, landers, rovers, payloads, components, and subsystems built for demanding environments.

Principal supply-chain role02 · Space Hardware

Relationships

Supplies or enables Apollo Fusion

None currently known.

Apollo Fusion supplies or serves

York Space Systems— customerTell me more

Apollo Fusion sold multiple Apollo Constellation Engine (ACE) Hall-effect electric propulsion systems to York Space Systems (fourth deal noted); pre-acquisition contracts around 2021.

Relationship research record

Airbus OneWeb Satellites— customerTell me more

Astra (post-acquisition of Apollo Fusion) agreed to sell electric thrusters (originally developed by Apollo Fusion) to Airbus OneWeb Satellites; announced 2022 with delivery targets into 2023.

Relationship research record

Maxar Technologies— customerTell me more

Astra (incorporating Apollo Fusion propulsion) signed agreement to supply electric propulsion engines for Maxar Earth observation satellites; deals announced 2022 with delivery commitments referenced into 2023.

Relationship research record

Astroscale— customerTell me more

Astra (post-acquisition of Apollo Fusion) landed engine deals to supply electric propulsion systems to Astroscale; announced 2022.

Relationship research record

Saturn Satellite Networks, Inc.— customerTell me more

Apollo Fusion landed contracts for its Apollo Constellation Engine electric propulsion systems with Saturn Satellite Networks; referenced around the time of the 2021 Astra acquisition.

Relationship research record

Internalized capabilities

Astra— acquired capability · strategic partner2 connectionsTell me more

Astra acquired Apollo Fusion in 2021, integrating its electric propulsion technology and manufacturing capabilities to develop and produce the Astra Spacecraft Engine (Hall-effect thruster) in-house.

Relationship research record

Apollo Fusion's ACE propulsion systems were integrated into Astra's satellite buses as part of vertical integration; acquisition completed 2021 with ongoing use and marketing of the capability by Astra.

Relationship research record

Government awards & missions

Air Force Research Laboratory— defense-propulsion-module-delivery-recipientTell me more

Under its USAF SBIR Phase II scope, Apollo Fusion was to design, qualify, and deliver an integrated flight propulsion module to the Air Force Research Laboratory. · A specific AFRL-CRI mission requiring an integrated, defense-qualified ACE propulsion module for a highly mobile satellite application.

The SBIR award description expressly identifies AFRL as the recipient of the integrated flight propulsion module and as the mission stakeholder for qualification and acceptance testing.

government agency

Greylock Partners— series-b-investorTell me more

Greylock Partners, through Reid Hoffman, invested $10 million in Apollo Fusion’s Series B financing; Hoffman joined Apollo Fusion’s board. · Series B financing to increase manufacturing and test capacity for ACE propulsion systems.

Apollo Fusion’s own financing announcement identifies Reid Hoffman of Greylock Partners as the source of the $10 million Series B investment.

investment organization

Explore Apollo Fusion in context

← Suppliers to Apollo Fusion0 companies · Browse profiles

Companies supplied by Apollo Fusion →6 companies · Browse profiles

Airbus OneWeb Satellites Astra Astroscale Maxar Technologies Saturn Satellite Networks, Inc.York Space Systems

Highlighted companies match the selected filters. Smaller translucent companies are their direct connections across every scale and segment. Circle size reflects connection prominence, not a ranking or valuation.

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