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By NASA
Tess Caswell, a stand-in crew member for the Artemis III Virtual Reality Mini-Simulation, executes a moonwalk in the Prototype Immersive Technology (PIT) lab at NASA’s Johnson Space Center in Houston. The simulation was a test of using VR as a training method for flight controllers and science teams’ collaboration on science-focused traverses on the lunar surface. Credit: NASA/Robert Markowitz When astronauts walk on the Moon, they’ll serve as the eyes, hands, and boots-on-the-ground interpreters supporting the broader teams of scientists on Earth. NASA is leveraging virtual reality to provide high-fidelity, cost-effective support to prepare crew members, flight control teams, and science teams for a return to the Moon through its Artemis campaign.
The Artemis III Geology Team, led by principal investigator Dr. Brett Denevi of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, participated in an Artemis III Surface Extra-Vehicular VR Mini-Simulation, or “sim” at NASA’s Johnson Space Center in Houston in the fall of 2024. The sim brought together science teams and flight directors and controllers from Mission Control to carry out science-focused moonwalks and test the way the teams communicate with each other and the astronauts.
“There are two worlds colliding,” said Dr. Matthew Miller, co-lead for the simulation and exploration engineer, Amentum/JETSII contract with NASA. “There is the operational world and the scientific world, and they are becoming one.”
NASA mission training can include field tests covering areas from navigation and communication to astronaut physical and psychological workloads. Many of these tests take place in remote locations and can require up to a year to plan and large teams to execute. VR may provide an additional option for training that can be planned and executed more quickly to keep up with the demands of preparing to land on the Moon in an environment where time, budgets, and travel resources are limited.
VR helps us break down some of those limitations and allows us to do more immersive, high-fidelity training without having to go into the field. It provides us with a lot of different, and significantly more, training opportunities.
BRI SPARKS
NASA co-lead for the simulation and Extra Vehicular Activity Extended Reality team at Johnson.
Field testing won’t be going away. Nothing can fully replace the experience crew members gain by being in an environment that puts literal rocks in their hands and incudes the physical challenges that come with moonwalks, but VR has competitive advantages.
The virtual environment used in the Artemis III VR Mini-Sim was built using actual lunar surface data from one of the Artemis III candidate regions. This allowed the science team to focus on Artemis III science objectives and traverse planning directly applicable to the Moon. Eddie Paddock, engineering VR technical discipline lead at NASA Johnson, and his team used data from NASA’s Lunar Reconnaissance Orbiter and planet position and velocity over time to develop a virtual software representation of a site within the Nobile Rim 1 region near the south pole of the Moon. Two stand-in crew members performed moonwalk traverses in virtual reality in the Prototype Immersive Technology lab at Johnson, and streamed suit-mounted virtual video camera views, hand-held virtual camera imagery, and audio to another location where flight controllers and science support teams simulated ground communications.
A screen capture of a virtual reality view during the Artemis III VR Mini-Simulation. The lunar surface virtual environment was built using actual lunar surface data from one of the Artemis III candidate regions. Credit: Prototype Immersive Technology lab at NASA’s Johnson Space Center in Houston. The crew stand-ins were immersed in the lunar environment and could then share the experience with the science and flight control teams. That quick and direct feedback could prove critical to the science and flight control teams as they work to build cohesive teams despite very different approaches to their work.
The flight operations team and the science team are learning how to work together and speak a shared language. Both teams are pivotal parts of the overall mission operations. The flight control team focuses on maintaining crew and vehicle safety and minimizing risk as much as possible. The science team, as Miller explains, is “relentlessly thirsty” for as much science as possible. Training sessions like this simulation allow the teams to hone their relationships and processes.
Members of the Artemis III Geology Team and science support team work in a mock Science Evaluation Room during the Artemis III Virtual Reality Mini-Simulation at NASA’s Johnson Space Center in Houston. Video feeds from the stand-in crew members’ VR headsets allow the science team to follow, assess, and direct moonwalks and science activities. Credit: NASA/Robert Markowitz Denevi described the flight control team as a “well-oiled machine” and praised their dedication to getting it right for the science team. Many members of the flight control team have participated in field and classroom training to learn more about geology and better understand the science objectives for Artemis.
“They have invested a lot of their own effort into understanding the science background and science objectives, and the science team really appreciates that and wants to make sure they are also learning to operate in the best way we can to support the flight control team, because there’s a lot for us to learn as well,” Denevi said. “It’s a joy to get to share the science with them and have them be excited to help us implement it all.”
Artemis III Geology Team lead Dr. Brett Denevi of the Johns Hopkins University Applied Physics Laboratory in Laurel, Maryland, left, Artemis III Geology Team member, Dr. Jose Hurtado, University of Texas at El Paso, and simulation co-lead, Bri Sparks, work together during the Artemis III Virtual Reality Mini-Simulation at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz This simulation, Sparks said, was just the beginning for how virtual reality could supplement training opportunities for Artemis science. In the future, using mixed reality could help take the experience to the next level, allowing crew members to be fully immersed in the virtual environment while interacting with real objects they can hold in their hands. Now that the Nobile Rim 1 landing site is built in VR, it can continue to be improved and used for crew training, something that Sparks said can’t be done with field training on Earth.
While “virtual” was part of the title for this exercise, its applications are very real.
“We are uncovering a lot of things that people probably had in the back of their head as something we’d need to deal with in the future,” Miller said. “But guess what? The future is now. This is now.”
Test subject crew members for the Artemis III Virtual Reality Mini-Simulation, including Grier Wilt, left, and Tess Caswell, center, execute a moonwalk in the Prototype Immersive Technology lab at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz Grier Wilt, left, and Tess Caswell, crew stand-ins for the Artemis III Virtual Reality Mini-Simulation, execute a moonwalk in the Prototype Immersive Technology (PIT) lab at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz Engineering VR technical discipline lead Eddie Paddock works with team members to facilitate the virtual reality components of the Artemis III Virtual Reality Mini-Simulation in the Prototype Immersive Technology lab at NASA’s Johnson Space Center in Houston. Credit: Robert Markowitz Flight director Paul Konyha follows moonwalk activities during the Artemis III Virtual Reality Mini-Simulation at NASA’s Johnson Space Center in Houston. Credit: NASA/Robert Markowitz
Rachel Barry
NASA’s Johnson Space Center
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By NASA
X-ray: NASA/CXC/SAO/Univ Mexico/S. Estrada-Dorado et al.; Ultraviolet: NASA/JPL; Optical: NASA/ESA/STScI (M. Meixner)/NRAO (T.A. Rector); Infrared: ESO/VISTA/J. Emerson; Image Processing: NASA/CXC/SAO/K. Arcand; A planet may have been destroyed by a white dwarf at the center of a planetary nebula — the first time this has been seen. As described in our latest press release, this would explain a mysterious X-ray signal that astronomers have detected from the Helix Nebula for over 40 years. The Helix is a planetary nebula, a late-stage star like our Sun that has shed its outer layers leaving a small dim star at its center called a white dwarf.
This composite image contains X-rays from Chandra (magenta), optical light data from Hubble (orange, light blue), infrared data from ESO (gold, dark blue), and ultraviolet data from GALEX (purple) of the Helix Nebula. Data from Chandra indicates that this white dwarf has destroyed a very closely orbiting planet.
This artist’s impression shows a planet (left) that has approached too close to a white dwarf (right) and been torn apart by tidal forces from the star. The white dwarf is in the center of a planetary nebula depicted by the blue gas in the background. The planet is part of a planetary system, which includes one planet in the upper left and another in the lower right. The besieged planet could have initially been a considerable distance from the white dwarf but then migrated inwards by interacting with the gravity of other planets in the system.CXC/SAO/M.Weiss An artist’s concept shows a planet (left) that has approached too close to a white dwarf (right) and is being torn apart by tidal forces from the star. The white dwarf is in the center of a planetary nebula depicted by the blue gas in the background. The planet is part of a planetary system, which includes one planet in the upper left and another in the lower right. The besieged planet could have initially been a considerable distance from the white dwarf but then migrated inwards by interacting with the gravity of the other planets in the system.
Eventually debris from the planet will form a disk around the white dwarf and fall onto the star’s surface, creating the mysterious signal in X-rays that astronomers have detected for decades.
Dating back to 1980, X-ray missions, such as the Einstein Observatory and ROSAT telescope, have picked up an unusual reading from the center of the Helix Nebula. They detected highly energetic X-rays coming from the white dwarf at the center of the Helix Nebula named WD 2226-210, located only 650 light-years from Earth. White dwarfs like WD 2226-210 do not typically give off strong X-rays.
In about 5 billion years, our Sun will run out of fuel and expand, possibly engulfing Earth. These end stages of a star’s life can be utterly beautiful as is the case with this planetary nebula called the Helix Nebula.X-ray: NASA/CXC/SAO/Univ Mexico/S. Estrada-Dorado et al.; Ultraviolet: NASA/JPL; Optical: NASA/ESA/STScI (M. Meixner)/NRAO (T.A. Rector); Infrared: ESO/VISTA/J. Emerson; Image Processing: NASA/CXC/SAO/K. Arcand; A new study featuring the data from Chandra and XMM-Newton may finally have settled the question of what is causing these X-rays from WD 2226-210: this X-ray signal could be the debris from a destroyed planet being pulled onto the white dwarf. If confirmed, this would be the first case of a planet seen to be destroyed by the central star in a planetary nebula.
Observations by ROSAT, Chandra, and XMM-Newton between 1992 and 2002 show that the X-ray signal from the white dwarf has remained approximately constant in brightness during that time. The data, however, suggest there may be a subtle, regular change in the X-ray signal every 2.9 hours, providing evidence for the remains of a planet exceptionally close to the white dwarf.
Previously scientists determined that a Neptune-sized planet is in a very close orbit around the white dwarf — completing one revolution in less than three days. The researchers in this latest study conclude that there could have been a planet like Jupiter even closer to the star. The besieged planet could have initially been a considerable distance from the white dwarf but then migrated inwards by interacting with the gravity of other planets in the system. Once it approached close enough to the white dwarf the gravity of the star would have partially or completely torn the planet apart.
WD 2226-210 has some similarities in X-ray behavior to two other white dwarfs that are not inside planetary nebulas. One is possibly pulling material away from a planet companion, but in a more sedate fashion without the planet being quickly destroyed. The other white dwarf is likely dragging material from the vestiges of a planet onto its surface. These three white dwarfs may constitute a new class of variable, or changing, object.
A paper describing these results appears in The Monthly Notices of the Royal Astronomical Society and is available online. The authors of the paper are Sandino Estrada-Dorado (National Autonomous University of Mexico), Martin Guerrero (The Institute of Astrophysics of Andalusia in Spain), Jesús Toala (National Autonomous University of Mexico), Ricardo Maldonado (National Autonomous University of Mexico), Veronica Lora (National Autonomous University of Mexico), Diego Alejandro Vasquez-Torres (National Autonomous University of Mexico), and You-Hua Chu (Academia Sinica in Taiwan).
NASA’s Marshall Space Flight Center manages the Chandra program. The Smithsonian Astrophysical Observatory’s Chandra X-ray Center controls science operations from Cambridge, Massachusetts, and flight operations from Burlington, Massachusetts.
Read more from NASA’s Chandra X-ray Observatory.
Learn more about the Chandra X-ray Observatory and its mission here:
https://www.nasa.gov/chandra
https://chandra.si.edu
Visual Description
This release features two images; a composite image of the Helix Nebula, and an artist’s rendering of a planet’s destruction, which may be occurring in the nebula’s core.
The Helix Nebula is a cloud of gas ejected by a dying star, known as a white dwarf. In the composite image, the cloud of gas strongly resembles a creature’s eye. Here, a hazy blue cloud is surrounded by misty, concentric rings of pale yellow, rose pink, and blood orange. Each ring appears dusted with flecks of gold, particularly the outer edges of the eye-shape.
The entire image is speckled with glowing dots in blues, whites, yellows, and purples. At the center of the hazy blue gas cloud, a box has been drawn around some of these dots including a bright white dot with a pink outer ring, and a smaller white dot. The scene which may be unfolding inside this box has been magnified in the artist’s rendering.
The artist’s digital rendering shows a possible cause of the large white dot with the pink outer ring. A brilliant white circle near our upper right shows a white dwarf, the ember of a dying star. At our lower left, in the relative foreground of the rendering, is what remains of a planet. Here, the planet resembles a giant boulder shedding thousands of smaller rocks. These rocks flow off the planet’s surface, pulled back toward the white dwarf in a long, swooping tail. Glowing orange fault lines mar the surface of the crumbling planet. In our upper left and lower right, inside the hazy blue clouds which blanket the rendering, are two other, more distant planets. After the rocks from the planet start striking the surface of the white dwarf, X-rays should be produced.
News Media Contact
Megan Watzke
Chandra X-ray Center
Cambridge, Mass.
617-496-7998
mwatzke@cfa.harvard.edu
Lane Figueroa
Marshall Space Flight Center, Huntsville, Alabama
256-544-0034
lane.e.figueroa@nasa.gov
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By NASA
NASA An apprentice at Langley Laboratory (now NASA’s Langley Research Center in Hampton, Virginia) inspects wind tunnel components in this image from May 15, 1943. During World War II, the National Advisory Committee for Aeronautics (NACA), the precursor to NASA, employed apprentices (which NASA has since transitioned into internships) to support meaningful jobs in data computing, testing, and mechanical work.
Make your own mark on NASA history. Apply to the agency’s summer internships by 11:59 p.m. EST Feb. 28.
Image credit: NASA
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