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    • By NASA
      6 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      NASA’s Lunar Trailblazer approaches the Moon as it enters its science orbit in this artist’s concept. The small satellite will orbit about 60 miles (100 kilometers) above the lunar surface, producing the best-yet maps of water on the Moon.Lockheed Martin Space NASA’s Lunar Trailblazer spacecraft gets covered in anti-static wrap before being shipped from Lockheed Martin Space in Littleton, Colorado, to the agency’s Kennedy Space Center in Florida, where it arrived on Jan. 29.Lockheed Martin Space Before arriving at the Moon, the small satellite mission will use the gravity of the Sun, Earth, and Moon over several months to gradually line up for capture into lunar orbit.
      NASA’s Lunar Trailblazer arrived in Florida recently in advance of its launch later this month and has been integrated with a SpaceX Falcon 9 rocket. Shipped from Lockheed Martin Space in Littleton, Colorado, the small satellite is riding along on Intuitive Machines’ IM-2 launch — part of NASA’s CLPS (Commercial Lunar Payload Services) initiative — which is slated for no earlier than Thursday, Feb. 26, from Launch Complex 39A at the agency’s Kennedy Space Center.
      Approximately 48 minutes after launch, Lunar Trailblazer will separate from the rocket and begin its independent flight to the Moon. The small satellite will discover where the Moon’s water is, what form it is in, and how it changes over time, producing the best-yet maps of water on the lunar surface. Observations gathered during its two-year prime mission will contribute to the understanding of water cycles on airless bodies throughout the solar system while also supporting future human and robotic missions to the Moon by identifying where water is located.
      Key to achieving these goals are the spacecraft’s two state-of-the-art science instruments: the High-resolution Volatiles and Minerals Moon Mapper (HVM3) infrared spectrometer and the Lunar Thermal Mapper (LTM) infrared multispectral imager. The HVM3 instrument was provided by NASA’s Jet Propulsion Laboratory in Southern California and LTM was built by the University of Oxford and funded by the UK Space Agency.
      Lunar Trailblazer’s voyage to the Moon will take between four and seven months, de-pending on the day it launches. This orbital diagram shows the low-energy transfer trajectory of the NASA mission should it launch on Feb. 26, the earliest date in its launch period.NASA/JPL-Caltech “The small team is international in scope, which is more typical of larger projects,” said Andy Klesh, Lunar Trailblazer’s project systems engineer at JPL. “And unlike the norm for small missions that may only have a very focused, singular purpose, Lunar Trailblazer has two high-fidelity instruments onboard. We are really punching above our weight.”
      Intricate Navigation
      Before it can use these instruments to collect science data, Lunar Trailblazer will for several months perform a series of Moon flybys, thruster bursts, and looping orbits. These highly choreographed maneuvers will eventually position the spacecraft so it can map the surface in great detail.
      Weighing only 440 pounds (200 kilograms) and measuring 11.5 feet (3.5 meters) wide when its solar panels are fully deployed, Lunar Trailblazer is about the size of a dishwasher and has a relatively small engine. To make its four-to-seven-month trip to the Moon (depending on the launch date) as efficient as possible, the mission’s design and navigation team has planned a trajectory that will use the gravity of the Sun, Earth, and Moon to guide the spacecraft — a technique called low-energy transfer.
      “The initial boost provided by the rocket will send the spacecraft past the Moon and into deep space, and its trajectory will then be naturally reshaped by gravity after several lunar flybys and loops around Earth. This will allow it to be captured into lunar orbit with minimal propulsion needs,” said Gregory Lantoine, Lunar Trailblazer’s mission design and navigation lead at JPL. “It’s the most fuel-efficient way to get to where we need to go.”
      As it flies past the Moon several times, the spacecraft will use small thruster bursts — aka trajectory correction maneuvers — to slowly change its orbit from highly elliptical to circular, bringing the satellite down to an altitude of about 60 miles (100 kilometers) above the Moon’s surface.
      Arriving at the Moon
      Once in its science orbit, Lunar Trailblazer will glide over the Moon’s surface, making 12 orbits a day and observing the surface at a variety of different times of day over the course of the mission. The satellite will also be perfectly placed to peer into the permanently shadowed craters at the Moon’s South Pole, which harbor cold traps that never see direct sunlight. If Lunar Trailblazer finds significant quantities of ice at the base of the craters, those locations could be pinpointed as a resource for future lunar explorers.
      The data the mission collects will be transmitted to NASA’s Deep Space Network and delivered to Lunar Trailblazer’s new operations center at Caltech’s IPAC in Pasadena, California. Working alongside the mission’s experienced team will be students from Caltech and nearby Pasadena City College who are involved in all aspects of the mission, from operations and communications to developing software.
      Lunar Trailblazer was a selection of NASA’s SIMPLEx (Small Innovative Missions for Planetary Exploration), which provides opportunities for low-cost science spacecraft to ride-share with selected primary missions. To maintain the lower overall cost, SIMPLEx missions have a higher risk posture and lighter requirements for oversight and management. This higher risk acceptance allows NASA to test pioneering technologies, and the definition of success for these missions includes the lessons learned from more experimental endeavors.
      “We are a small mission with groundbreaking science goals, so we will succeed by embracing the flexibility that’s built into our organization,” said Lee Bennett, Lunar Trailblazer operations lead with IPAC. “Our international team consists of seasoned engineers, science team members from several institutions, and local students who are being given the opportunity to work on a NASA mission for the first time.”
      More About Lunar Trailblazer
      Lunar Trailblazer is led by Principal Investigator Bethany Ehlmann of Caltech in Pasadena, California. Caltech also leads the mission’s science investigation and mission operations. This includes planning, scheduling, and sequencing of all science, instrument, and spacecraft activities during the nominal mission. Science data processing will be done in the Bruce Murray Laboratory for Planetary Visualization at Caltech. NASA’s Jet Propulsion Laboratory in Southern California manages Lunar Trailblazer and provides system engineering, mission assurance, the HVM3 instrument, and mission design and navigation. Lockheed Martin Space provides the spacecraft, integrates the flight system, and supports operations under contract with Caltech. University of Oxford developed and provided the LTM instrument. Part of NASA’s Lunar Discovery Exploration Program, the mission is managed by NASA’s Planetary Mission Program Office at Marshall Space Flight Center in Huntsville, Alabama, for the agency’s Science Mission Directorate in Washington.
      For more information about Lunar Trailblazer, visit:
      https://www.jpl.nasa.gov/missions/lunar-trailblazer
      How NASA’s Lunar Trailblazer Could Decipher the Moon’s Icy Secrets NASA’s Lunar Trailblazer Gets Final Payload for Moon Water Hunt Moon Water Imager Integrated With NASA’s Lunar Trailblazer News Media Contacts
      Karen Fox / Molly Wasser
      NASA Headquarters, Washington
      202-358-1600
      karen.c.fox@nasa.gov / molly.l.wasser@nasa.gov
      Ian J. O’Neill
      Jet Propulsion Laboratory, Pasadena, Calif.
      818-354-2649
      ian.j.oneill@jpl.nasa.gov
      Isabel Swafford
      Caltech IPAC
      626-216-4257
      iswafford@ipac.caltech.edu
      2025-021
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      Last Updated Feb 13, 2025 Related Terms
      Lunar Trailblazer Commercial Lunar Payload Services (CLPS) Earth's Moon Jet Propulsion Laboratory Lunar Science Explore More
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    • By NASA
      2 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      Technicians at Thales Alenia Space in Turin, Italy, lower Gateway’s HALO (Habitation and Logistics Outpost) onto a stand in the cleanroom.Thales Alenia Space When NASA’s Artemis IV astronauts journey to the Moon, they will make the inaugural visit to Gateway, humanity’s first space station in lunar orbit. Shown here, technicians carefully guide HALO (Habitation and Logistics Outpost)—a foundational element of Gateway—onto a stand in the cleanroom at Thales Alenia Space in Turin, Italy. The element’s intricate structure, designed to support astronauts and science in lunar orbit, has entered the cleanroom after successfully completing a series of rigorous environmental stress tests.
      In the cleanroom, technicians will make final installations before preparing the module for transport to the United States, a key milestone on its path to launch. This process includes installing and testing valves and hatches, performing leak checks, and integrating external secondary structures. Once these steps are finished, the module will be packaged for shipment to Gilbert, Arizona, where Northrop Grumman will complete its outfitting.
      Technicians at Thales Alenia Space in Turin, Italy, oversee the HALO module’s transfer to the cleanroom.Thales Alenia Space As one of Gateway’s four pressurized modules, HALO will provide Artemis astronauts with space to live, work, conduct scientific research, and prepare for missions to the lunar surface. The module will also support internal and external science payloads, including a space weather instrument suite attached via a Canadian Space Agency Small Orbital Replacement Unit Robotic Interface, host the Lunar Link communications system developed by European Space Agency, and offer docking ports for visiting vehicles, including lunar landers and NASA’s Orion spacecraft.
      Developed in collaboration with industry and international partners, Gateway is a cornerstone of NASA’s Artemis campaign to advance science and exploration on and around the Moon in preparation for the next giant leap: the first human missions to Mars.
      Learn More About Gateway Facebook logo @NASAGateway @NASA_Gateway Instagram logo @nasaartemis Share
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      Last Updated Feb 13, 2025 ContactLaura RochonLocationJohnson Space Center Related Terms
      Artemis Artemis 4 Earth's Moon Exploration Systems Development Mission Directorate Gateway Program Gateway Space Station Humans in Space Johnson Space Center Explore More
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    • By NASA
      4 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      A team at JPL packed up three small Moon rovers, delivering them in February to the facility where they’ll be attached to a commercial lunar lander in preparation for launch. The rovers are part of a project called CADRE that could pave the way for potential future multirobot missions.. NASA/JPL-Caltech A trio of suitcase-size rovers and their base station have been carefully wrapped up and shipped off to join the lander that will deliver them to the Moon’s surface.
      Three small NASA rovers that will explore the lunar surface as a team have been packed up and shipped from the agency’s Jet Propulsion Laboratory in Southern California, marking completion of the first leg of the robots’ journey to the Moon.
      The rovers are part of a technology demonstration called CADRE (Cooperative Autonomous Distributed Robotic Exploration), which aims to show that a group of robots can collaborate to gather data without receiving direct commands from mission controllers on Earth. They’ll use their cameras and ground-penetrating radars to send back imagery of the lunar surface and subsurface while testing out the novel software that enables them to work together autonomously.
      The CADRE rovers will launch to the Moon aboard IM-3, Intuitive Machines’ third lunar delivery, which has a mission window that extends into early 2026, as part of NASA’s CLPS (Commercial Lunar Payload Services) initiative. Once installed on Intuitive Machines’ Nova-C lander, they’ll head to the Reiner Gamma region on the western edge of the Moon’s near side, where the solar-powered, suitcase-size rovers will spend the daylight hours of a lunar day (the equivalent of about 14 days on Earth) carrying out experiments. The success of CADRE could pave the way for potential future missions with teams of autonomous robots supporting astronauts and spreading out to take simultaneous, distributed scientific measurements.
      Members of a JPL team working on NASA’s CADRE technology demonstration use temporary red handles to move one of the project’s small Moon rovers to prepare it for transport to Intuitive Machines’ Houston facility, where it will be attached to the company’s third lunar lander. Construction of the CADRE hardware — along with a battery of rigorous tests to prove readiness for the journey through space — was completed in February 2024.
      To get prepared for shipment to Intuitive Machines’ Houston facility, each rover was attached to its deployer system, which will lower it via tether from the lander onto the dusty lunar surface. Engineers flipped each rover-deployer pair over and attached it to an aluminum plate for safe transit. The rovers were then sealed in protective metal-frame enclosures that were fitted snuggly into metal shipping containers and loaded onto a truck. The hardware arrived safely on Sunday, Feb. 9.
      “Our small team worked incredibly hard constructing these robots and putting them to the test, and we have been eagerly waiting for the moment where we finally see them on their way,” said Coleman Richdale, the team’s assembly, test, and launch operations lead at JPL. “We are all genuinely thrilled to be taking this next step in our journey to the Moon, and we can’t wait to see the lunar surface through CADRE’s eyes.”
      The rovers, the base station, and a camera system that will monitor CADRE experiments on the Moon will be integrated with the lander — as will several other NASA payloads — in preparation for the launch of the IM-3 mission.
      More About CADRE
      A division of Caltech in Pasadena, California, JPL manages CADRE for the Game Changing Development program within NASA’s Space Technology Mission Directorate. The technology demonstration was selected under the agency’s Lunar Surface Innovation Initiative, which was established to expedite the development of technologies for sustained presence on the lunar surface. NASA’s Science Mission Directorate manages the CLPS initiative. The agency’s Glenn Research Center in Cleveland and its Ames Research Center in Silicon Valley, California, both supported the project. Motiv Space Systems designed and built key hardware elements at the company’s Pasadena facility. Clemson University in South Carolina contributed research in support of the project.
      For more about CADRE, go to:
      https://go.nasa.gov/cadre
      News Media Contact
      Melissa Pamer
      Jet Propulsion Laboratory, Pasadena, Calif.
      626-314-4928
      melissa.pamer@jpl.nasa.gov
      2025-018
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      Last Updated Feb 11, 2025 Related Terms
      CADRE (Cooperative Autonomous Distributed Robotic Exploration) Commercial Lunar Payload Services (CLPS) Earth's Moon Game Changing Development Program Jet Propulsion Laboratory Space Technology Mission Directorate Technology Technology Demonstration Explore More
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    • By NASA
      4 min read
      What You Need To Know About the March 2025 Total Lunar Eclipse
      The Moon will pass into Earth’s shadow and appear to turn red on the night of March 13 or early in the morning of March 14, depending on time zone. Here’s what you need to know about the total lunar eclipse.
      The March 2025 total lunar eclipse will take place between late night on March 13 and early morning on March 14 across several time zones. In this data visualization, the Moon moves from right to left, passing through Earth’s shadow and leaving in its wake an eclipse diagram with the times (in UTC) at various stages of the eclipse. Credit: NASA’s Scientific Visualization Studio What is a lunar eclipse?
      A lunar eclipse occurs when the Sun, Earth, and Moon align so that the Moon passes into Earth’s shadow. In a total lunar eclipse, the entire Moon falls within the darkest part of Earth’s shadow, called the umbra. When the Moon is within the umbra, it turns red-orange. Lunar eclipses are sometimes called “Blood Moons” because of this phenomenon.
      Alignment of the Moon, Earth, and Sun during a lunar eclipse (not to scale). NASA’s Scientific Visualization Studio How can I observe the eclipse?
      You don’t need any special equipment to observe a lunar eclipse, although binoculars or a telescope will enhance the view. A dark environment away from bright lights makes for the best viewing conditions.
      This eclipse will be visible from Earth’s Western Hemisphere.
      Map showing where the March 13-14, 2025 lunar eclipse is visible. Contours mark the edge of the visibility region at eclipse contact times, labeled in UTC. NASA’s Scientific Visualization Studio What can I expect to observe?
      Milestone: What’s happening: Penumbral eclipse begins (8:57pm PDT, 11:57pm EDT, 03:57 UTC) The Moon enters the Earth’s penumbra, the outer part of the shadow. The Moon begins to dim, but the effect is quite subtle. Partial eclipse begins (10:09pm PDT, 1:09am EDT, 05:09 UTC) The Moon begins to enter Earth’s umbra and the partial eclipse begins. To the naked eye, as the Moon moves into the umbra, it looks like a bite is being taken out of the lunar disk. The part of the Moon inside the umbra will appear very dark. Totality begins (11:26pm PDT, 2:26am EDT, 06:26 UTC) The entire Moon is now in the Earth’s umbra. The Moon will turn a coppery-red. Try binoculars or a telescope for a better view. If you want to take a photo, use a camera on a tripod with exposures of at least several seconds. Totality ends (12:31am PDT, 3:31am EDT, 07:31 UTC) As the Moon exits Earth’s umbra, the red color fades. It will look as if a bite is being taken out of the opposite side of the lunar disk as before. Partial eclipse ends (1:47am PDT, 4:47am EDT, 08:47 UTC) The whole Moon is in Earth’s penumbra, but again, the dimming is subtle. Penumbral eclipse ends (3:00am PDT, 6:00am EDT, 10:00 UTC) The eclipse is over. Data visualization showing a telescopic view of the Moon as the March 2025 total lunar eclipse unfolds. Credit: NASA’s Scientific Visualization Studio Why does the Moon turn red during a lunar eclipse?
      The same phenomenon that makes our sky blue and our sunsets red causes the Moon to turn reddish-orange during a lunar eclipse. Sunlight appears white, but it actually contains a rainbow of components—and different colors of light have different physical properties. Blue light scatters relatively easily as it passes through Earth’s atmosphere. Reddish light, on the other hand, travels more directly through the air.
      When the Sun is high on a clear day, we see blue light scattered throughout the sky overhead. At sunrise and sunset, when the Sun is near the horizon, incoming sunlight travels a longer, low-angle path through Earth’s atmosphere to observers on the ground. The bluer part of the sunlight scatters away in the distance (where it’s still daytime), and only the yellow-to-red part of the spectrum reaches our eyes.
      During a lunar eclipse, the Moon appears red or orange because any sunlight that’s not blocked by our planet is filtered through a thick slice of Earth’s atmosphere on its way to the lunar surface. It’s as if all the world’s sunrises and sunsets are projected onto the Moon.
      During a total lunar eclipse, the Moon is reddened by sunlight filtered through Earth’s atmosphere. NASA’s Scientific Visualization Studio What else can I observe on the night of the eclipse?
      Look to the western sky on the night of the eclipse for a glimpse of planets Jupiter and Mars. The Moon will be in the constellation Leo, under the lion’s hind paw, at the beginning of the eclipse; soon afterward, it will cross into the constellation Virgo. As Earth’s shadow dims the Moon’s glow, constellations may be easier to spot than usual.
      Visit our What’s Up guide for monthly skywatching tips, and find lunar observing recommendations for each day of the year in our Daily Moon Guide.

      Read more: The Moon and Eclipses

      Writers: Caela Barry, Ernie Wright, and Molly Wasser
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      Last Updated Feb 06, 2025 Related Terms
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    • By NASA
      3 min read
      Preparations for Next Moonwalk Simulations Underway (and Underwater)
      Launch of Blue Origin’s New Shepard suborbital rocket system on Feb. 4, 2025. During the flight test, the capsule at the top detached from the booster and spun at approximately 11 rpm to simulate lunar gravity for the NASA-supported payloads inside.Blue Origin The old saying — “Practice makes perfect!” — applies to the Moon too. On Tuesday, NASA gave 17 technologies, instruments, and experiments the chance to practice being on the Moon… without actually going there. Instead, it was a flight test aboard a vehicle adapted to simulate lunar gravity for approximately two minutes.
      The test began on February 4, 2025, with the 10:00 a.m. CST launch of Blue Origin’s New Shepard reusable suborbital rocket system in West Texas. With support from NASA’s Flight Opportunities program, the company, headquartered in Kent, Washington, enhanced the flight capabilities of its New Shepard capsule to replicate the Moon’s gravity — which is about one-sixth of Earth’s — during suborbital flight.
      “Commercial companies are critical to helping NASA prepare for missions to the Moon and beyond,” said Danielle McCulloch, program executive of the agency’s Flight Opportunities program. “The more similar a test environment is to a mission’s operating environment, the better. So, we provided substantial support to this flight test to expand the available vehicle capabilities, helping ensure technologies are ready for lunar exploration.”
      NASA’s Flight Opportunities program not only secured “seats” for the technologies aboard this flight — for 16 payloads inside the capsule plus one mounted externally — but also contributed to New Shepard’s upgrades to provide the environment needed to advance their readiness for the Moon and other space exploration missions.
      “An extended period of simulated lunar gravity is an important test regime for NASA,” said Greg Peters, program manager for Flight Opportunities. “It’s crucial to reducing risk for innovations that might one day go to the lunar surface.”
      One example is the LUCI (Lunar-g Combustion Investigation) payload, which seeks to understand material flammability on the Moon compared to Earth. This is an important component of astronaut safety in habitats on the Moon and could inform the design of potential combustion devices there. With support from the Moon to Mars Program Office within the Exploration Systems Development Mission Directorate, researchers at NASA’s Glenn Research Center in Cleveland, together with Voyager Technologies, designed LUCI to measure flame propagation directly during the Blue Origin flight.
      The rest of the NASA-supported payloads on this Blue Origin flight included seven from NASA’s Game Changing Development program that seek to mitigate the impact of lunar dust and to perform construction and excavation on the lunar surface. Three other NASA payloads tested instruments to detect subsurface water on the Moon as well as to study flow physics and phase changes in lunar gravity. Rounding out the manifest were payloads from Draper, Honeybee Robotics, Purdue University, and the University of California in Santa Barbara.
      Flight Opportunities is part of the agency’s Space Technology Mission Directorate and is managed at NASA’s Armstrong Flight Research Center.
      By Nancy Pekar, NASA’s Flight Opportunities program
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      Last Updated Feb 04, 2025 EditorLoura HallContactNancy J. Pekarnancy.j.pekar@nasa.gov Related Terms
      Ames Research Center Armstrong Flight Research Center Artemis Flight Opportunities Program Game Changing Development Program Space Technology Mission Directorate View the full article
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