Polaris Intelligence
Polaris
Intelligence
About
Ctrl K
Sign in
© Polaris Intelligence 2026
PrivacyTermsAdmin

Apollo Fusion

US

Apollo Fusion is a manufacturer specializing in electric propulsion systems for satellites. They designed and built state-of-the-art Hall thruster systems, like the Apollo Constellation Engine (ACE), for government and commercial satellite programs. In 2021, Apollo Fusion was acquired by Astra Space to expand Astra's launch capabilities beyond low Earth orbit. Their propulsion systems have been used by customers like Spaceflight Inc. and are designed for high-volume manufacturing to meet the demands of modern satellite constellations.

commercialFounded 2016
Mountain View, California, United States
www.astra.com/space-products/
Admin Edit
0.0-5.0

All verified mentions of this organization in source documents.

Mike Cassidy is the Founder and CEO of Apollo Fusion.

GovernanceValue 2.8Jun 7, 2021Astra & Apollo: Reaching New Orbits Together

Astra will incorporate Apollo Fusion’s Apollo Constellation Engine electric propulsion systems into satellite buses the company is developing.

RelationshipsCapabilityValue 4.4Jun 7, 2021Astra to acquire spacecraft propulsion company Apollo Fusion

Astra planned the acquisition of Apollo Fusion in a transaction valued up to $145,000,000.

RelationshipsFinancialValue 5.0Jun 7, 2021Astra Acquires Apollo Fusion to Reach New Orbits

Apollo Fusion shares Astra's focus on maximizing development velocity and designing for scale.

GeneralValue 1.2Jun 7, 2021Astra & Apollo: Reaching New Orbits Together

Apollo Fusion manufactures a leading electric propulsion engine.

CapabilityValue 2.8Jun 7, 2021Astra Acquires Apollo Fusion to Reach New Orbits

The Transporter-2 mission will feature Sherpa-FX2 and debut Sherpa-LTE1, which uses electric propulsion from Apollo Fusion.

CapabilityPlanValue 4.5May 11, 2021Spaceflight Inc. readies 36 customer Spacecraft and two OTVs for launch on SpaceX’s Transporter-2 mission

Apollo Fusion won an order from York Space Systems for a set of satellite electric propulsion systems on 2021-01-26.

RelationshipsValue 4.4Jan 27, 2021Apollo Fusion wins electric propulsion order from York Space Systems

Apollo Fusion currently offers two versions of the ACE thruster, one that uses 400 watts of power and one that uses 1,400 watts of power.

CapabilityGeneralValue 4.0Jan 27, 2021Apollo Fusion wins electric propulsion order from York Space Systems

Saturn Satellite Networks will use Apollo Fusion’s Hall effect thrusters on the small geostationary orbit satellites it is developing.

CapabilityRelationshipsPlanValue 4.0Jan 27, 2021Apollo Fusion wins electric propulsion order from York Space Systems

Apollo Fusion will provide its Apollo Constellation Engine (ACE) electric propulsion system for a low Earth orbit constellation of at least 10 satellites that York Space Systems is building for launch in 2022.

RelationshipsPlanCapabilityValue 4.4Jan 27, 2021Apollo Fusion wins electric propulsion order from York Space Systems

An unnamed manufacturing partner that supplies Apollo Fusion produces other components for companies such as Northrop Grumman and Raytheon and can produce tens to hundreds of thruster units per month.

CapabilityRelationshipsGrowthValue 4.0Jan 27, 2021Apollo Fusion wins electric propulsion order from York Space Systems

Sherpa-LTE is an electric-propulsion orbital transfer vehicle that uses high specific impulse Xenon propellant and the ACE Hall thruster propulsion system developed by Apollo Fusion, Inc.

CapabilityValue 4.0Dec 13, 2020UPDATE: Spaceflight’s Orbital Transfer Vehicles Have Launches In Sight

Apollo Fusion has raised nearly $25,000,000 in funding.

FinancialValue 4.0Nov 12, 2020Apollo Fusion’s Electric Propulsion System To Empower Spaceflight’s OTVs

Apollo Fusion team members have designed and built propulsion systems that are flying on over 1,000 satellites in orbit.

CapabilityValue 4.0Nov 12, 2020Apollo Fusion’s Electric Propulsion System To Empower Spaceflight’s OTVs

Apollo Fusion plans to start commercial production of AXE thrusters in early 2020.

PlanValue 3.5May 7, 2019Apollo Fusion obtains Hall thruster technology from JPL

Apollo Fusion signed an agreement with NASA’s Jet Propulsion Laboratory that gives Apollo Fusion an exclusive worldwide commercial license for JPL’s Magnetically Shielded Miniature (MaSMi) Hall thruster technology and a contract to provide JPL with three MaSMi-based thrusters.

RelationshipsCapabilityValue 4.6May 7, 2019Apollo Fusion obtains Hall thruster technology from JPL

Apollo Fusion will deliver three MaSMi-based thrusters to JPL primarily for ground testing, with one of the thrusters potentially usable on a future spacecraft.

RelationshipsCapabilityPlanValue 4.0May 7, 2019Apollo Fusion obtains Hall thruster technology from JPL

AXE will provide higher thrust and performance than Apollo Fusion’s existing Apollo Constellation Engine (ACE), with AXE specified at 1,000 watts and 55 millinewtons of thrust versus ACE at 400 watts and 24 millinewtons of thrust.

CapabilityValue 4.5May 7, 2019Apollo Fusion obtains Hall thruster technology from JPL

Apollo Fusion expects AXE to be of interest to developers of high-power satellites, including all-electric geostationary satellites that seek higher performance to decrease transit time to geostationary orbit.

CapabilityValue 2.4May 7, 2019Apollo Fusion obtains Hall thruster technology from JPL

Greylock Partners led Apollo Fusion’s $10,000,000 Series B funding round.

RelationshipsFinancialValue 4.5Jul 11, 2018Electric satellite propulsion company raises $10 million
Page3of4
Track