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NASA and L3Harris conducted a full-duration RS-25 hot fire test Nov. 11 on the Fred Haise Test Stand at Stennis Space Center near Bay St. Louis, Mississippi, marking a major milestone for future Artemis flights of the Space Launch System rocket.

Press release

L3Harris Successfully Tests Second RS-25 Engine for Artemis V

NASA and L3Harris Technologies (NYSE: LHX) have successfully test-fired the second RS-25 engine that will support the core stage of the Space Launch System (SLS) rocket for NASA’s Artemis V mission.

Orion Meets SLS: L3Harris Technology Ready to go to the Moon

NASA's Artemis II mission is a step closer to launch as the Orion spacecraft, equipped with critical L3Harris technologies for propulsion, communication and life support, is stacked atop the Space Launch System rocket.

Seeking Astrobiological Potential Millions of Miles from Earth

One of humanity’s most profound questions continues: Is there any place in our galaxy suitable for life beyond Earth? NASA intends to find out, with the help of technology provided by L3Harris.

Supporting the Air and Space Forces

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Spotlight on Space Capabilities

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L3Harris access to supply chain solutions

Access to Space

Assured and affordable space access has never been more urgent. L3Harris is responding with innovative, low-cost, highly-reliable, responsive launch solutions.

Mars Electra-lite UHF Transceiver

The C/TT-510 Electra-lite Transceiver is flexible enough in its design to accommodate many mission scenarios where data links are required between two spacecraft.

Launch Vehicle Flight Safety System

L3Harris’ Flight Termination System - Automatic Destruct Unit (ADU-208) was designed to provide a means to automatically terminate powered elements during inadvertent separation or launch vehicle breakup.

RS-25 Engine

Powering Deep Space Exploration

Orion – Variable Depth Sonar System

Orion VDS | Compact Mid-Frequency (3 kHz) Variable Depth Sonar System

Advanced Radar Solutions for Space Domain Awareness

L3Harris is a global radar systems engineering leader building upon decades of success in serving the U.S Space Surveillance Network (SSN) and the Space Superiority mission to deliver next-generation radar solutions.

Geostationary Extended Observations (GeoXO)

L3Harris’ next generation of advanced sensors and imaging technology – orbiting on geostationary (GEO) satellites – is answering the call to prepare people for and protect them from severe weather.

Positioning, Navigation and Timing - PNT

Positioning, Navigation and Timing or PNT - whether for civil, commercial or military use, modern society as we know it would not be the same without it.

For over 50 years, L3Harris has been at the forefront of advancing weather satellite capabilities to improve the accuracy of weather forecasts, measure climate change and increase life-saving warning times.

Weather Satellite Technology

L3Harris’ innovative weather satellite solutions are critical to improving the accuracy of weather forecasts, measuring climate change and increasing life-saving warning times.

Space Solutions

Access to Space

Aircraft Missionization & Avionics Solutions

Aircraft Missionization and Avionics

Collage of space exploration capabilities

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Missile Warning and Defense

Resilient Communications and Networks

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Latest News

Press release | 11. 12. 2025

L3Harris Successfully Tests Second RS-25 Engine for Artemis V

NASA and L3Harris Technologies (NYSE: LHX) have successfully test-fired the second RS-25 engine that will support the core stage of the Space Launch System (SLS) rocket for NASA’s Artemis V mission.