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The heart of a lunar sensor
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By NASA
2 Min Read Building a Lunar Network: Johnson Tests Wireless Technologies for the Moon
From left, Johnson Exploration Wireless Laboratory (JEWL) Software Lead William Dell; Lunar 3GPP Principal Investigator Raymond Wagner; JEWL intern Harlan Phillips; and JEWL Lab Manager Chatwin Lansdowne. Credits: Nevada Space Proving Grounds (NSPG) NASA engineers are strapping on backpacks loaded with radios, cameras, and antennas to test technology that might someday keep explorers connected on the lunar surface. Their mission: test how astronauts on the Moon will stay connected during Artemis spacewalks using 3GPP (LTE/4G and 5G) and Wi-Fi technologies.
It’s exciting to bring lunar spacewalks into the 21st century with the immersive, high-definition experience that will make people feel like they’re right there with the astronauts.
Raymond Wagner
NASA’s Lunar 3GPP Project Principal Investigator
A NASA engineer tests a backpack-mounted wireless communications system in the Nevada desert, simulating how astronauts will stay connected during Artemis lunar spacewalks. NSPG With Artemis, NASA will establish a long-term presence at the Moon, opening more of the lunar surface to exploration than ever before. This growth of lunar activity will require astronauts to communicate seamlessly with each other and with science teams back on Earth.
“We’re working out what the software that uses these networks needs to look like,” said Raymond Wagner, principal investigator in NASA’s Lunar 3GPP project and member of Johnson Space Center’s Exploration Wireless Laboratory (JEWL) in Houston. “We’re prototyping it with commercial off-the-shelf hardware and open-source software to show what pieces are needed and how they interact.”
Carrying a prototype wireless network pack, a NASA engineer helps test wireless 4G and 5G technologies that could one day keep Artemis astronauts connected on the Moon. NSPG The next big step comes with Artemis III, which will land a crew on the Moon and carry a 4G/LTE demonstration to stream video and audio from the astronauts on the lunar surface.
The vision goes further. “Right now the lander or rover will host the network,” Wagner said. “But if we go to the Moon to stay, we may eventually want actual cell towers. The spacesuit itself is already becoming the astronaut’s cell phone, and rovers could act as mobile hotspots. Altogether, these will be the building blocks of communication on the Moon.”
Team members from NASA’s Avionics Systems Laboratory at Johnson Space Center in Houston.NASA/Sumer Loggins Back at Johnson, teams are simulating lunar spacewalks, streaming video, audio, and telemetry over a private 5G network to a mock mission control. The work helps engineers refine how future systems will perform in challenging environments. Craters, lunar regolith, and other terrain features all affect how radio signals travel — lessons that will also carry over to Mars.
For Wagner, the project is about shaping how humanity experiences the next era of exploration. “We’re aiming for true HD on the Moon,” he said. “It’s going to be pretty mind-blowing.”
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Last Updated Sep 18, 2025 Related Terms
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By NASA
4 Min Read La NASA revela los finalistas del concurso de diseño de la mascota lunar de Artemis II
Read this story in English here.
La NASA ya tiene 25 finalistas para el diseño del indicador de gravedad cero de Artemis II que volará con la tripulación de esta misión alrededor de la Luna y de regreso a la Tierra el próximo año.
Los astronautas Reid Wiseman, Victor Glover y Christina Koch de la NASA, y el astronauta de la CSA (Agencia Espacial Canadiense) Jeremy Hansen pronto seleccionarán uno de los diseños finalistas para que les acompañe dentro de la nave espacial Orion como su mascota lunar.
“El indicador de gravedad cero de Artemis II será especial para la tripulación”, dijo Reid Wiseman, comandante de Artemis II. “En una nave espacial llena de equipos y herramientas complejas que mantienen viva a la tripulación en el espacio profundo, el indicador es una forma amigable y útil de resaltar el elemento humano que es tan crítico para nuestra exploración del universo. Nuestra tripulación está entusiasmada con estos diseños provenientes de muchos lugares del mundo y esperamos con interés llevar al ganador con nosotros en este viaje”.
Un indicador de gravedad cero es un pequeño peluche que típicamente viaja con la tripulación para indicar visualmente el momento en que llegan al espacio. Durante los primeros ocho minutos después del despegue, la tripulación y el indicador, que estará situado cerca de ellos, seguirán siendo presionados contra sus asientos por la gravedad y la fuerza de la subida al espacio. Cuando se apaguen los motores principales de la etapa central del cohete Sistema de Lanzamiento Espacial (SLS, por sus siglas en inglés), se eliminarán las restricciones de la gravedad, pero la tripulación seguirá atada de manera segura a sus asientos: la capacidad de flotar de su indicador de gravedad cero será la evidencia de que han llegado al espacio.
Artemis II será la primera misión en la que el público haya participado en la creación de la mascota de la tripulación.
Estos diseños, con ideas que abarcan desde versiones lunares de criaturas terrestres hasta visiones creativas sobre la exploración y el descubrimiento, fueron seleccionados entre más de 2.600 propuestas procedentes de más de 50 países, e incluyen diseños de estudiantes desde primaria a secundaria. Los finalistas representan a 10 países, entre los que están Estados Unidos, Canadá, Colombia, Finlandia, Francia, Alemania, Japón, Perú, Singapur y Gales.
Mira aquí los diseños finalistas:
Lucas Ye | Mountain View, California“Rise” Kenan Ziyan | Canyon, Texas“Zappy Zebra” Royal School, SKIES Space Club | Winnipeg, Manitoba, Canada“Luna the Space Polar Bear” Garden County Schools | Oshkosh, Nebraska“Team GarCo” Richellea Quinn Wijaya | Singapore“Parsec – The Bird That Flew to the Moon” Anzhelika Iudakova | Finland“Big Steps of Little Octopus” Congressional School | Falls Church, Virginia“Astra-Jelly” Congressional School | Falls Church, Virginia“Harper, Chloe, and Mateo’s ZGI” Alexa Pacholyk | Madison, Connecticut“Artemis” Leila Fleury | Rancho Palos Verdes, California“Beeatrice” Oakville Trafalgar School | Oakville, Ontario, Canada“Lepus the Moon Rabbit” Avon High School | Avon, Connecticut“Sal the Salmon” Daniela Colina | Lima, Peru“Corey the Explorer” Caroline Goyer-Desrosiers | St. Eustache, Quebec, Canada“Flying Squirrel Ready for Its Take Off to Space!” Giulia Bona | Berlin, Germany“Art & the Giant” Tabitha Ramsey | Frederick, Maryland“Lunar Crust-acean” Gabriela Hadas | Plano, Texas“Celestial Griffin” Savon Blanchard | Pearland, Texas“Soluna Flier” Ayako Moriyama | Kyoto, Japan“MORU: A Cloud Aglow with Moonlight and Hope” Johanna Beck | McPherson, Kansas“Creation Mythos” Guillaume Truong | Toulouse, France“Space Mola-mola (aka Moon Fish) Plushie” Arianna Robins | Rockledge, Florida“Terra the Titanosaurus” Sandy Moya | Madrid, Colombia“MISI: Guardian of the Journey” Bekah Crowmer | Mooresville, Indiana“Mona the Moon Moth” Courtney John | Llanelli, Wales“Past, Present, Future” En marzo, la NASA anunció que buscaba propuestas de creadores de todo el mundo para el diseño de un indicador de gravedad cero que volaría a bordo de Artemis II, la primera misión tripulada de la campaña Artemis de la NASA. Se pidió a los creadores que presentaran ideas que representaran la importancia de Artemis, la misión, o la exploración y el descubrimiento, y que cumplieran con requisitos específicos de tamaño y materiales. La empresa de crowdsourcing (colaboración abierta) Freelancer sirvió como facilitadora del concurso en nombre de la NASA, a través del Laboratorio de Campeonatos de la NASA, el cual es gestionado por la Dirección de Misiones de Tecnología Espacial de la agencia.
Una vez que la tripulación haya seleccionado un diseño final, el Laboratorio de Mantas Térmicas de la NASA lo fabricará para el vuelo. El indicador estará amarrado dentro de Orion antes del lanzamiento.
La misión, que tendrá alrededor de 10 días de duración, es otro paso adelante hacia misiones en la superficie lunar y sirve como preparación para futuras misiones tripuladas a Marte de la agencia.
Mediante Artemis II, la NASA enviará astronautas a explorar la Luna para llevar a cabo descubrimientos científicos, obtener beneficios económicos y sentar las bases para las primeras misiones tripuladas a Marte.
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By NASA
3 min read
Preparations for Next Moonwalk Simulations Underway (and Underwater)
The Lunar Environment Structural Test Rig simulates the intense cold of the lunar night, ranging from 40 Kelvin (K) to 125 K while maintaining a vacuum environment. This creates a tool by which scientists and engineers can test materials, electronics, and flight hardware for future Moon and Mars missions, characterizing their behaviors at these temperatures while also validating their ability to meet design requirements.
Cryogenic engineer Adam Rice tests the Lunar Environment Structural Test Rig to simulate the thermal-vacuum conditions of the lunar night on Thursday, May 22, 2025.NASA/Jef Janis Facility Overview
The Lunar Environment Structural Test Rig (LESTR) approaches the problem of creating a simulated lunar environment by departing from typical fluid immersion or jacketed-and-chilled chamber systems. It does this by using a cryocooler to reject heat and bring the test section to any point desired by the test engineer, as low as 40 K or as high as 125 K in a vacuum environment. By combining high vacuum and cryogenic temperatures, LESTR enables safe, accurate, and cost-effective testing of materials and hardware destined for the Moon and beyond. Its modular setup supports a wide range of components — from spacesuits to rover wheels to electronics — while laying the foundation for future Moon and Mars mission technologies.
Quick Facts
LESTR is a cryogenic mechanical test system built up within a conventional load frame with the goal of providing a tool to simulate the thermal-vacuum conditions of the lunar night to engineers tasked with creating the materials, tools, and machinery to succeed in NASA’s missions.
LESTR replicates extreme lunar night environments — including temperatures as low as 40 K and high vacuum (<5×10⁻⁷ Torr) — enabling true-to-space testing without liquid cryogens. Unlike traditional “wet” methods, LESTR uses a cryocooler and vacuum system to create an environment accurate to the lunar surface. From rover wheels to spacesuits to electronics, LESTR supports static and dynamic testing across a wide range of Moon and Mars mission hardware. With scalable architecture and precision thermal control, LESTR lays critical groundwork for advancing the technologies of NASA’s Artemis missions and beyond. Capabilities
Specifications
Temperature Range: 40 K to 125 K Load Capacity: ~10 kN Vacuum Level: <5×10⁻⁷ Torr Test Volume (Cold Box Dimensions): 7.5 by 9.5 by 11.5 inches Maximum Cycle Rate: 100 Hz Time to Vacuum:10⁻⁵ Torr in less than one hour 10⁻⁶ Torr in four hours Features
Dry cryogenic testing (no fluid cryogen immersion) “Dial-a-temperature” control for precise thermal conditions Integrated optical extensometer for strain imaging Digital image correlation and electrical feedthroughs support a variety of data collection methods Native support for high-duration cyclic testing Applications
Cryogenic Lifecycle Testing: fatigue, fracture, and durability assessments Low-Frequency Vibration Testing: electronics qualification for mobility systems Static Load Testing: material behavior characterization in lunar-like environments Suspension and Drivetrain Testing: shock absorbers, wheels, springs, and textiles Textiles Testing: evaluation of spacesuits and habitat fabrics Dynamic Load Testing: up to 10 kN linear capacity, 60 mm stroke Contact
Cryogenic and Mechanical Evaluation Lab Manager: Andrew Ring
216-433-9623
Andrew.J.Ring@nasa.gov
LESTR Technical Lead: Ariel Dimston
216-433-2893
Ariel.E.Dimston@nasa.gov
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NASA’s Glenn Research Center in Cleveland provides ground test facilities to industry, government, and academia. If you are considering testing in one of our facilities or would like further information about a specific facility or capability, please let us know.
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The Lunar Environment Structural Test Rig simulates the intense cold of the lunar night on Friday, June 6, 2025.NASA/Steven Logan The Lunar Environment Structural Test Rig uses a cryocooler to reject heat and bring the test section as low as 40 Kelvin in a vacuum environment on Thursday, May 22, 2025.NASA/Jef Janis Keep Exploring Discover More Topics From NASA
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