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

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