Engineers and technicians inspect the Lunar Environment Monitoring Station (LEMS) instrument in the cleanroom at Goddard Space Flight Center in Greenbelt Md. on January 9th 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Artemis Scientist, Trevor Graff, performs instrument deployment exercises with a medium fidelity mock up of the Lunar Environment Monitoring Station (LEMS) in the lunar simulant bin at the Florida Space Institute Exolith Lab, Orlando, Fl., Aug 6, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Katie Mellos.

Artemis Scientist, Trevor Graff, performs instrument deployment exercises with a medium fidelity mock up of the Lunar Environment Monitoring Station (LEMS) in the lunar simulant bin at the Florida Space Institute Exolith Lab, Orlando, Fl., Aug 6, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Katie Mellos.

The Lunar Environment Monitoring Station (LEMS) medium fidelity instrument mock up is configured for instrument deployment exercises in the lunar simulant bin at the Florida Space Institute Exolith Lab, Orlando, Fl., Aug 6, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Katie Mellos.

From left, mechanical engineer Gabrielle Ludwig, technician Alex Schaeffer, and mechanical engineer Mitchell Hamann install the Lunar Environment Monitoring Station (LEMS) instrument onto a test plate in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Engineering technician Jancilon Viegas installs thermocouples onto the The Lunar Environment Monitoring Station (LEMS) instrument in preparation for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Mitchell Hamann and John Pindell configure the Lunar Environment Monitoring Station (LEMS) instrument for testing in the Electromagnetic Interference/Electromagnetic Compatibility (EMI/EMC) Chamber at Goddard Space Flight Center, Greenbelt Md., Feb 17, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Mike Guinto

Lunar Environment Monitoring Station (LEMS) team members install the instrument for testing in the Electromagnetic Interference/Electromagnetic Compatibility (EMI/EMC) Chamber at Goddard Space Flight Center, Greenbelt Md., Feb 13, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Chief Operating Officer of Quest Thermal Group Phillip Tyler installs Integrated Multilayer Insulation (IMLI) on the Lunar Environment Monitoring Station for Artemis (LEMS) bus inside a cleanroom at Goddard Space Flight Center, Greenbelt Md., Jan 13, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

A detail view of the Lunar Environment Monitoring Station, (LEMS) bus prior to thermal blanket installation inside the cleanroom at Goddard Space Flight Center, Greenbelt Md., Jan 12, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Team members install the Lunar Environment Monitoring Station (LEMS) instrument for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

The Lunar Environment Monitoring Station (LEMS) in Electromagnetic Interference/Electromagnetic Compatibility (EMI/EMC) Chamber at Goddard Space Flight Center, Greenbelt Md., Feb 11, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

The Lunar Environment Monitoring Station (LEMS) instrument is installed for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

The Lunar Environment Monitoring Station (LEMS) instrument is installed for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Electrical test engineer Thomas Schluszas configures the Lunar Environment Monitoring Station (LEMS) instrument for testing in the Electromagnetic Interference/Electromagnetic Compatibility (EMI/EMC) Chamber at Goddard Space Flight Center, Greenbelt Md., Feb 17, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

(L-R) Engineering Technician Alex Schaeffer, Mechanical Engineer Brie Ludwig , and Mechanical Engineer Mitchell Hamann inspect the Lunar Environment Monitoring Station (LEMS) instrument in preparation for testing in a thermal vacuum chamber at Goddard Space Flight Center in Greenbelt Md. on March 31, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Naoma McCall (Left), Science Co-Investigator and deployment lead and Mechanical Engineer Brie Ludwig inspect the Lunar Environment Monitoring Station (LEMS) instrument in the cleanroom at Goddard Space Flight Center in Greenbelt Md. on February 5th, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Mechanical Engineer Brie Ludwig inspects the Lunar Environment Monitoring Station (LEMS) instrument in preparation for testing in a thermal vacuum chamber at Goddard Space Flight Center in Greenbelt Md. on March 31, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

The Lunar Environment Monitoring Station (LEMS) instrument is installed for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Lead Thermal Engineer Juan Rodriguez-ruiz (left) and Project Manager Neerav Shah inspect the Lunar Environment Monitoring Station (LEMS) instrument in preparation for testing in a thermal vacuum chamber at Goddard Space Flight Center in Greenbelt Md. on April 3rd, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Electrical Systems Lead, James Fraction, inspects the Lunar Environment Monitoring Station (LEMS) instrument in preparation for testing in a thermal vacuum chamber at Goddard Space Flight Center in Greenbelt Md. on April 3rd, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Lunar Environment Monitoring Station (LEMS) team members Computer Engineer James Olsen & Principle Investigator Dr. Medhi Benna perform electrical test procedures in the avoinics lab at at Goddard Space Flight Center in Greenbelt, Maryland. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region.NASA/Desiree Stover.

Engineering Technician Eric Norris, and Mechanical Engineer Mitchell Hamann guide the Lunar Environment Monitoring Station (LEMS) instrument in to the Thermal Vacuum Chamber preparation for testing at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

(L-R) Mechanical Engineer Brie Ludwig, Project Manager Neerav Shah and Deputy Project Manager Stephanie Vidal inspect the Lunar Environment Monitoring Station (LEMS) instrument in the cleanroom at Goddard Space Flight Center in Greenbelt Md. on February 5th, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

The Lunar Environment Monitoring Station (LEMS) instrument is installed for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., March 30, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

(L-R) Contamination Control Engineer Diane Briczinski, Acting Science Mission Directorate Chief Engineer Synthia Tonn, and Lead Payload Systems Engineer Sam Hicks inspect the Lunar Environment Monitoring Station (LEMS) instrument in the cleanroom at Goddard Space Flight Center in Greenbelt Md. on January 12th, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Lead Payload Systems Engineer Sam Hicks inspects the Lunar Environment Monitoring Station (LEMS) instrument in the cleanroom at Goddard Space Flight Center in Greenbelt Md. on January 12th, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Lunar Environment Monitoring Station (LEMS) team members assemble the flight battery connectors to the connector bracket in a lab at Goddard Space Flight Center in Greenbelt, Maryland on September 9th, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. NASA/Katie Mellos.

Mechanical Engineer John Seixal (left) and Engineering Technician Alex Schaeffer prepare the Lunar Environment Monitoring Station (LEMS) flight battery for vibration testing in a lab at NASA's Goddard Space Flight Center in Greenbelt, Maryland on September 29th, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. NASA/Denny Henry.

The Lunar Environment Monitoring Station (LEMS) flight battery is installed for testing in a thermal vacuum chamber at Goddard Space Flight Center, Greenbelt Md., October 8th, 2025.. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry

Mechanical Engineer Mitchell Hamann disassembles a Lunar Environment Monitoring Station (LEMS) flight electrical board chassis in the avoinics lab at NASA's Goddard Space Flight Center in Greenbelt, Maryland on October 22, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. NASA/Desiree Stover.

Artemis Scientist, Trevor Graff, performs instrument deployment exercises with a medium fidelity mock up of the Lunar Environment Monitoring Station (LEMS) in the lunar simulant bin at the Florida Space Institute Exolith Lab, Orlando, Fl., Aug 6, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Katie Mellos.

Rebekah Austin, Avionics Lead and Deputy Systems Engineer, configures a breadboard test for the Lunar Environment Monitoring Station (LEMS) Seismometer at NASA's Goddard Space Flight Center in Greenbelt, Maryland on May 14th, 2025. NASA/Denny Henry

Contamination Control Technician, Rudy Foxwell, inspects the Lunar Environment Monitoring Station (LEMS) Flight Battery in a clean tent at NASA's Goddard Space Flight Center in Greenbelt, Maryland on October 14th, 2026. NASA/Katie Mellos.

A detail view of the Lunar Environment Monitoring Station, (LEMS) inside the cleanroom at Goddard Space Flight Center, Greenbelt Md., Jan 30, 2026. The Lunar Environment Monitoring Station for Artemis (LEMS) is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Mike Guinto

Naoma McCall, Science Co-Investigator, Deployment Lead, performs instrument deployment exercises with a medium fidelity mock up of the Lunar Environment Monitoring Station (LEMS) in the lunar simulant bin at the Florida Space Institute Exolith Lab, Orlando, Fl., Aug 7th, 2025. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Katie Mellos.

Principal Investigator Dr. Mehdi Benna inspects the Lunar Environment Monitoring Station (LEMS) instrument in the cleanroom at Goddard Space Flight Center in Greenbelt Md. on January 9th, 2026. LEMS is a compact, autonomous, and self-sustaining seismometer suite designed to carry out continuous, long-term, monitoring of the lunar seismic environment at the South Polar region. Photo Credit: NASA/Denny Henry