Abundant energy from Earth to the asteroid belt.

Abundant energy from Earth to the asteroid belt.

Abundant energy from Earth to the asteroid belt.

Fission microreactors to enable strategic energy for critical mission capabilities on earth, in space, and underwater.

R1 Microreactor

Kilowatt-Scale Special Purpose Reactor

01

Integrated Shielding & Transport Cradle

Tungsten & B4C shielding ease upkeep. Cradle simplifies deployment with minimal gear.

02

Reactivity Controls

Graphite and boron carbide control drums with independent actuator motors, inspired by historical space reactor designs.

03

Core

TRISO coated particle fuel in prismatic graphite core.

04

Sodium Heat Pipes

Sodium heat pipes enable redundant high temperature entirely passive heat transfer.

05

Primary Heat Exchanger

Fin and tube heat exchanger.

06

Nitrogen Brayton Cycle

Simple recuperated N2 closed Brayton cycle enables efficient power conversion at < 300 psi. Low maintenance, low corrosion, leak resistant, and high reliability.

07

Power Management & Distribution

Electricity is conditioned through a power management and distribution node which can flexibly deliver power and connect to local microgrids.

Simple design optimized for reliability, uptime, and manufacturability

Simple design optimized for reliability, uptime, and manufacturability

Simple design optimized for reliability, uptime, and manufacturability

Capabilities

Capabilities

Vertically integrated supply chain

Vertically integrated supply chain

Vertically integrated supply chain

Special Purpose Reactors

Special Purpose Reactors

Special Purpose Reactors

We specialize in designing and manufacturing adaptable and scaleable reactors for strategic energy applications, including space-based nuclear power and propulsion and energy resilience for mission-critical facilities.

We specialize in designing and manufacturing adaptable and scaleable reactors for strategic energy applications, including space-based nuclear power and propulsion and energy resilience for mission-critical facilities.

We specialize in designing and manufacturing adaptable and scaleable reactors for strategic energy applications, including space-based nuclear power and propulsion and energy resilience for mission-critical facilities.

Heat Pipes & Thermal Management

Thermal Management

Thermal Management

Our expertise encompasses designing and developing high-temperature heat pipes and radiators, ensuring compact high-temperature thermal management.

Our expertise encompasses designing and developing high-temperature heat pipes and radiators, ensuring compact high-temperature thermal management.

Our expertise encompasses designing and developing high-temperature heat pipes and radiators, ensuring compact high-temperature thermal management.

Control Systems

Control Systems

Control Systems

Our team excels in design, build, and test of automated control systems, enabling hardware-in-the-loop digital twins.

Our team excels in design, build, and test of automated control systems, enabling hardware-in-the-loop digital twins.

Our team excels in design, build, and test of automated control systems, enabling hardware-in-the-loop digital twins.

Graphite Machining

Graphite Machining

Graphite Machining

We precision machine nuclear-grade graphite in house.

We precision machine nuclear-grade graphite in house.

We precision machine nuclear-grade graphite in house.

© Antares Nuclear, Inc. 2025

© Antares Nuclear, Inc. 2025

© Antares Nuclear, Inc. 2025