Houston, Texas — Est. 2022

AETHON SPACE

Next-generation propulsion systems. Lunar cargo missions. Opening the pathway for sustained human presence beyond Earth.

Next Launch — Phoenix 1 Lunar Cargo
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3 Active Missions
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0 Engine Iterations
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02 — Active Programs

Mission
Manifest

Five programs across three operational phases — from lunar surface delivery to deep-space reconnaissance.

2,400 kg
Cargo Capacity
Phoenix Program
Phoenix 1 — Lunar Cargo Mission
First commercial lunar surface cargo delivery. Precision landing at Mare Tranquillitatis. Launch window: Q3 2026. Supporting payload delivery for NASA CLPS and commercial partners.
ACTIVE
T-189d
Communications
Helios Deep Space Network
Autonomous relay constellation for beyond-Earth communications. 4 relay satellites currently operational.
ACTIVE
Exploration
Vanguard Interplanetary Probe
Long-duration autonomous probe for Mars orbit survey and asteroid belt mineral reconnaissance.
PLANNED
Infrastructure
Aether Orbital Module
Modular habitat for lunar orbit staging and in-space assembly operations.
DEVELOPMENT
Flight Demo
Pathfinder Lander Demonstration
Successful vertical landing and hazard avoidance demonstration. White Sands Test Facility, NM — March 2025. Validated autonomous descent guidance, terrain-relative navigation, and throttleable engine restart capability at 1,200m AGL.
COMPLETED
03 — Propulsion Systems

Aethon-VII
Ion Plasma Drive

Aethon-VII Cross Section — Schematic View
PROPPELLANT FEED ION ACCEL GRIDS EXPANSION NOZZLE 4.2m

The Aethon-VII represents our fourth-generation ion plasma propulsion system — engineered for high-efficiency orbital transfer and sustained deep-space thrust. The variable-impulse architecture enables multi-phase mission profiles from a single engine platform.

Peak Thrust
0MN
Full-thrust capability across all axis vectors. Dual-mode operation for orbital insertion and deep-space cruise.
Specific Impulse
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Industry-leading pulse efficiency enabling 12× fuel reduction versus conventional chemical propulsion for equivalent delta-v budgets.
Payload to LEO
0kg
Dual-payload fairing accommodation. Structurally compatible with standard and extended payload envelopes.
Fuel Conversion Efficiency
0%
Magnetoplasmadynamic ion acceleration with real-time chamber optimization. Autonomous throttle management through AI-driven thrust vectoring.
Burn Duration Record
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Full-duration static fire completed December 2024. Validated engine restart capability and thermal margin across 6 continuous burn cycles.
04 — Mission Chronicle

Development
Timeline

Q1 2022
Aethon Space Founded
Company established in Houston, TX by a team of propulsion engineers and mission architects from NASA JSC and SpaceX.
Q3 2022
First Hot-Fire Test — Aethon-I
Initial engine prototype completes 45-second hot-fire at McGregor test facility. Baseline thrust validation achieved.
Q2 2023
$120M Series A Closed
Funding round led by Horizon Ventures with participation from aerospace-focused institutional investors. Valuation reaches $800M.
Q4 2023
Pathfinder Lander Prototype Complete
Full-scale vertical landing demonstrator assembled. Integration of autonomous guidance and throttleable descent engines.
Q2 2024
NASA CLPS Contract Awarded
Aethon selected for NASA Commercial Lunar Payload Services program. Phoenix 1 cargo delivery mission formally contracted.
Q4 2024
Aethon-VII Full-Duration Test
420-second full-duration burn completed successfully. Engine restart and thermal margins validated across 6 continuous cycles.
Q1 2025
Pathfinder Vertical Landing Demo
Successful autonomous descent and precision landing at White Sands. Terrain-relative navigation validated at 1,200m AGL initiation.
Q3 2025
Helios Relay Network Deployed
Four relay satellites operational in cislunar space. First deep-space communications link established at 380,000 km range.
Q2 2026
Phoenix 1 Vehicle Integration
Final assembly and integrated systems testing of the Phoenix 1 lander with Aethon-VII propulsion stack.
Q3 2026
Phoenix 1 — Launch
First commercial lunar cargo mission. 2,400 kg payload delivery to Mare Tranquillitatis. Historic milestone for private-sector cislunar operations.
05 — Careers

Join the
Mission

We are building the infrastructure for sustained human presence beyond Earth. Every role at Aethon contributes directly to that mission.

Propulsion
Senior Propulsion Engineer
Houston, TX — Full-time
Avionics
Avionics Systems Lead
Houston, TX — Full-time
Mission Ops
Mission Planning Analyst
Houston, TX — Full-time
Software
Flight Software Engineer
Houston, TX — Remote/Hybrid
View All Positions