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Investigaciones de la NASA en la estación espacial ayudan a impulsar la ciencia lunar
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By NASA
Robert Williams is a senior mechanical design engineer and the structures subject matter expert in the Engineering and Test Directorate at NASA’s Stennis Space Center.NASA/Danny Nowlin Living up to, and maintaining, the standard of excellence associated with NASA is what drives Robert Williams at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.
A native of Gulfport, Mississippi, Williams said he has had the opportunity to work with and be mentored by “some truly exceptional” engineers, some with careers reaching back to the Apollo era.
“I cannot overstate the vast amount of practical knowledge and experience we have at NASA Stennis,” Williams said. “We know how to get things done, and if we do not know, I can guarantee we will figure it out.”
Williams is a senior mechanical design engineer and the structures subject matter expert for the NASA Stennis Engineering and Test Directorate.
He provides technical oversight related to engineering mechanics and machine design by reviewing analysis and design packages from NASA Stennis contractors and NASA engineers for ongoing projects.
Williams also supports projects by performing analysis and creating detailed models, drawings, and system level designs, mostly at the versatile four-stand E Test Complex, where NASA Stennis has 12 active test cells capable of various component, engine, and stage test activities to support the agency and commercial companies.
In support of NASA’s Artemis campaign of returning astronauts to the Moon, Williams also has reviewed structural and pipe stress analysis for the exploration upper stage project that will test a new SLS (Space Launch System) rocket stage to fly on future Artemis missions.
He performed similar review work for Green Run testing of the SLS core stage at NASA Stennis ahead of the successful launch of the Artemis I uncrewed mission around the Moon.
Overall, Williams has been a part of projects on every test stand throughout more than eight years with NASA and five years as a contractor. He has been tasked with solving challenging problems, both individually and as a part of teams.
There were times when he was not sure if he or the team would be able to solve the problem or address it effectively, but each time, the NASA Stennis team found a way.
“Over the span of my career, I have yet to be in a situation where the challenge was not met,” he said.
The opportunity to work with “pretty much all the major space companies in some capacity” is most interesting to Williams. “The best thing is that being a small organization within a relatively small center, there are always opportunities to develop new skills and capabilities to help fill a need or gap,” he said.
No matter the task, Williams looks forward to supporting space innovation while living up to, and maintaining, the standard of excellence associated with NASA for the benefit of all.
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By NASA
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Gary Laier, center liaison for the Small Business Innovation Research/Small Business Technology Transfer (SBIR/STTR) program at NASA’s Armstrong Flight Research Center in Edwards, California, teaches students about aeronautics during Aero Fair at Tropico Middle School in Rosamond, California, on April 9, 2025.NASA/Genaro Vavuris When curiosity takes flight, learning knows no bounds. The impact of supporting STEM education extends far beyond the classroom, shaping the future of innovation and exploration. NASA Engages is the agency’s outreach website that connects NASA experts and resources with communities, educators, and students across the country. Led by NASA’s Office of STEM Engagement, the platform fosters collaboration between educators, organizations, and NASA employees to inspire the next generation.
Giovanna Camacho, Pathways systems engineering intern from NASA’s Armstrong Flight Research Center in Edwards, California, teaches students about aeronautics during Aero Fair at Tropico Middle School in Rosamond, California, on April 9, 2025.NASA/Genaro Vavuris Bringing NASA to the Classroom
NASA employees dedicate their time and expertise through NASA Engages, whether they’re passionate about robotics, flight research, or inspiring young minds to pursue STEM careers. One example of this is Aero Fair, a STEM program led by the California Office of STEM Engagement at NASA’s Armstrong Flight Research Center in Edwards, California. This initiative brings aeronautics directly to students, with NASA Armstrong professionals visiting classrooms – both in person and virtually – to engage students during three-day experiences that allow them to learn about aeronautics, meet NASA professionals, and explore potential career paths they might not have previously considered.
“When volunteers step up to help inspire and facilitate learning in the classroom, they are benefiting not only the students they interact with, but our future generation as well,” says Giovanna Camacho, Pathways systems engineering intern at NASA Armstrong, who volunteered at the event.
Chloe Day, a student at Tropico Middle School in Rosamond, California, said Aero Fair inspired her to consider a STEM career. “When NASA employees were talking about what they do and how they help our world today, it made me feel like I want to do it too.”
Educators can request an Aero Fair experience through NASA’s STEM Gateway. These programs “give students a chance to see themselves as real problem-solvers and innovators,” said Shauna Tinich, a Tropico Middle School teacher. “The most beneficial part of Aero Fair is the real-world connection to STEM. The connection to NASA makes it real and exciting for the students.”
Students from Tropico Middle School in Rosamond, California, build their own paper planes as part of a project during NASA Aero Fair on April 9, 2025.NASA/Genaro Vavuris A Program for Impact
The NASA Engages website matches outreach opportunities to employee skills and interests, while educators and community organizations can use the website to request public speakers, classroom visits, and educational support at events.
For many volunteers, the experience is just as inspiring as it is for the students. “Every time I volunteer, I walk out inspired,” Camacho said. “It motivates me to continue my pursuit of making a difference.”
Gary Laier, center liaison for the Small Business Innovation Research and Small Business Technology Transfer programs at NASA Armstrong, and Aero Fair volunteer, agreed: “It’s a rewarding experience for students, teachers, and NASA volunteers alike. I enjoy the opportunity to inspire youth and get them excited about their futures.”
By participating in outreach activities like Aero Fair, career panels, or events, NASA employees not only help ignite curiosity and provide knowledge to students and the community but also strengthen NASA’s connection to the communities it serves.
Gary Laier, center liaison for the Small Business Innovation Research/Small Business Technology Transfer (SBIR/STTR) program at NASA’s Armstrong Flight Research Center in Edwards, California, teaches students about aeronautics during Aero Fair at Tropico Middle School in Rosamond, California, on April 9, 2025.NASA/Genaro Vavuris Explore NASA STEM Opportunities
Educators, organizations, and community groups can connect with NASA in two ways. Through NASA Engages, external groups can request NASA support for their own events – such as inviting a NASA speaker or arranging classroom visits and providing outreach materials. Meanwhile, NASA STEM Gateway provides opportunities for individuals to participate in NASA-developed STEM events, internships, and programs like Aero Fair. To request NASA participation in an event or to learn more about NASA STEM opportunities, visit https://stemgateway.nasa.gov/nasaengages/s/.
Giovanna Camacho, Pathways systems engineering intern at NASA’s Armstrong Flight Research Center in Edwards, California, teaches students about aeronautics during Aero Fair at Tropico Middle School in Rosamond, California, on April 9, 2025.NASA/Genaro Vavuris Share
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Last Updated Apr 30, 2025 Related Terms
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7 min read ¿Qué es una caminata espacial? (Grados 5.o a 8.o)
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By NASA
Este artículo es para estudiantes de 5.o a 8.o grado.
Cada vez que un astronauta sale de un vehículo espacial, se dice que hace una actividad extravehicular (EVA, por sus siglas en inglés). A esto también se le llama caminata espacial.
El astronauta ruso Alexei Leonov hizo la primera caminata espacial el 18 de marzo de 1965. La primera caminata espacial duró 10 minutos.
El astronauta Ed White hizo la primera caminata espacial de un estadounidense durante la misión Géminis 4, el 3 de junio de 1965. La caminata espacial de White duró 23 minutos.
Hoy en día, las caminatas espaciales se hacen en el exterior de la Estación Espacial Internacional (EEI). Las caminatas espaciales suelen durar entre cinco y ocho horas, según el trabajo a realizar.
El récord mundial de más caminatas espaciales lo tiene el cosmonauta ruso Anatoly Solovyev. Hizo 16 caminatas espaciales por un total de más de 82 horas en el espacio exterior. Cuatro astronautas de la NASA tienen un empate para la mayor cantidad de caminatas espaciales. Michael López-Alegría (Mike L.A.), Peggy Whitson, Bob Behnken y Chris Cassidy han hecho 10 caminatas espaciales cada uno. Mike L.A. tiene el récord de Estados Unidos para la mayor cantidad de tiempo en caminatas espaciales. Su total es de más de 67 horas.
¿Por qué los astronautas llevan a cabo caminatas espaciales?
Los astronautas hacen caminatas espaciales por muchas razones. Las caminatas espaciales permiten a los astronautas trabajar fuera de su nave espacial mientras aún están en el espacio. Un trabajo que hacen los astronautas en una caminata espacial son los experimentos científicos. Se pueden sujetar experimentos en el exterior de una nave espacial para ver cómo el entorno espacial afecta diferentes objetos. Los astronautas colocan los experimentos fuera de la nave espacial durante una caminata espacial. Vuelven a salir para recuperar los experimentos cuando terminan.
Los astronautas también pueden poner a prueba nuevos equipos y reparar los satélites o sus naves espaciales mientras están en órbita. Al hacer caminatas espaciales, los astronautas pueden reparar equipos que, de otro modo, tendrían que ser devueltos a la Tierra para su reparación.
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Palabras que debes saber
radiación: una forma de energía que se emite, o transmite, en forma de rayos, ondas electromagnéticas o partículas
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¿Cómo hacen los astronautas las caminatas espaciales?
Cuando los astronautas hacen caminatas espaciales, usan trajes espaciales. Los trajes espaciales los protegen del duro entorno del espacio. Protegen a los astronautas de las temperaturas extremas de calor y frío, del dañino polvo espacial y de la radiación. Los trajes espaciales también les dan a los astronautas oxígeno para respirar y agua para beber durante las caminatas espaciales.
Los astronautas se visten con sus trajes espaciales varias horas antes de hacer una caminata espacial. Los trajes están presurizados. Esto significa que los trajes están llenos de oxígeno. Los trajes espaciales están presurizados para mantener los fluidos del cuerpo en estado líquido.
Una vez que tienen puestos sus trajes, los astronautas respiran oxígeno al 100% durante varias horas hasta que todo el nitrógeno sale de su cuerpo. Tener nitrógeno en el cuerpo durante una caminata espacial puede hacer que se formen burbujas de gas en el cuerpo. Estas burbujas de gas pueden hacer que los astronautas sientan dolor en articulaciones como los hombros, los codos, las muñecas y las rodillas. Esta condición se llama “enfermedad de los buzos” o síndrome de descompresión. La misma condición puede afectar a los buceadores que usan tanques de oxígeno para respirar debajo del agua.
Los astronautas ahora están listos para salir de la nave espacial. Salen de la nave espacial a través de una puerta especial llamada compuerta de aire. La compuerta de aire tiene dos puertas. Cuando los astronautas están dentro de la nave espacial, la compuerta de aire es hermética, lo que significa que no puede salir el aire. Cuando los astronautas se preparan para salir a una caminata espacial, pasan por la primera puerta y la cierran herméticamente detrás de ellos. Luego pueden abrir la segunda puerta sin que el aire se escape de la nave espacial. Después de una caminata espacial, los astronautas regresan al interior a través de la compuerta de aire. Cuando un astronauta se quita el traje espacial, se dice que sale del traje.
Los astronautas usan pasamanos en la estación espacial para desplazarse de un lugar a otro. A veces, se usa un gran brazo robótico para mover a los astronautas en las caminatas espaciales. Los astronautas están sujetos al brazo robótico con una correa para los pies.
Los astronautas ahora están listos para salir de la nave espacial. Salen de la nave espacial por una puerta especial llamada compuerta de aire. La compuerta de aire tiene dos puertas. Cuando los astronautas están dentro de la nave espacial, la compuerta de aire es hermética, lo que significa que no puede salir el aire. Cuando los astronautas se preparan para salir a una caminata espacial, pasan por la primera puerta y la cierran herméticamente detrás de ellos. Luego pueden abrir la segunda puerta sin que el aire se salga de la nave espacial. Después de una caminata espacial, los astronautas regresan al interior a través de la compuerta de aire.
¿Cómo se mantienen seguros los astronautas durante las caminatas espaciales?
Cuando hacen una caminata espacial, los astronautas usan correas de seguridad para sujetarse a su nave espacial. Las correas son como cuerdas. Un extremo está enganchado al caminante espacial. El otro extremo está conectado al vehículo. Las correas de seguridad evitan que los astronautas se alejen flotando en el espacio. Los astronautas también usan correas para evitar que las herramientas se alejen flotando. Atan las herramientas a sus trajes espaciales con correas.
Otra forma en que los astronautas se mantienen seguros durante las caminatas espaciales es usando una mochila llamada SAFER. SAFER son las siglas en inglés de Ayuda Simplificada para Rescate en Actividad Extravehicular. El SAFER se usa como una mochila. Utiliza pequeños propulsores a reacción para permitir que el astronauta se desplace por el espacio. Si un astronauta se soltara y se alejara flotando, SAFER le ayudaría a volar de regreso a la nave espacial. Los astronautas controlan SAFER con una pequeña palanca de mando.
¿Cómo entrenan los astronautas para las caminatas espaciales?
Una forma en que los astronautas se entrenan para las caminatas espaciales es nadando. Flotar en el espacio es muy parecido a flotar en el agua. Los astronautas practican las caminatas espaciales debajo del agua en una gran piscina cerca del Centro Espacial Johnson de la NASA en Houston, Texas.
La piscina se llama Laboratorio de Flotabilidad Neutral (NBL, por sus siglas en inglés). La piscina tiene capacidad para unos 23,5 millones de litros (6,2 millones de galones) de agua. Por cada hora que pasen en una caminata espacial, los astronautas deben entrenar siete horas en la piscina del NBL.
Otra forma en que los astronautas practican para una caminata espacial es utilizando la realidad virtual. Los astronautas usan un casco que tiene una pantalla de video dentro y guantes especiales. En la pantalla dentro del casco se muestra un video de la simulación. Los guantes especiales permiten mostrar los movimientos de los astronautas con el video. La simulación de realidad virtual se ve y se siente como una caminata espacial.
Read this article in English here: What Is a Spacewalk? (Grades 5-8)
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By NASA
What does the future of space exploration look like? At the 2025 FIRST Robotics World Championship in Houston, NASA gave student robotics teams and industry leaders a first-hand look—complete with lunar rovers, robotic arms, and real conversations about shaping the next era of discovery.
Students and mentors experience NASA exhibits at the 2025 FIRST Robotics World Championship at the George R. Brown Convention Center in Houston from April 16-18. NASA/Sumer Loggins NASA engaged directly with the Artemis Generation, connecting with more than 55,000 students and 75,000 parents and mentors. Through interactive exhibits and discussions, students explored the agency’s robotic technologies, learned about STEM career paths and internships, and gained insight into NASA’s bold vision for the future. Many expressed interest in internships—and dreams of one day contributing to NASA’s missions to explore the unknown for the benefit of all humanity.
Multiple NASA centers participated in the event, including Johnson Space Center in Houston; Jet Propulsion Laboratory in Southern California; Kennedy Space Center in Florida; Langley Research Center in Virginia; Ames Research Center in California; Michoud Assembly Facility in New Orleans; Armstrong Flight Research Center in Edwards, California; Glenn Research Center in Cleveland; Goddard Space Flight Center in Greenbelt, Maryland; and the Katherine Johnson Independent Verification and Validation Facility in West Virginia. Each brought unique technologies and expertise to the exhibit floor.
FIRST Robotics attendees explore NASA’s exhibit and learn about the agency’s mission during the event.NASA/Robert Markowitz Displays highlighted key innovations such as:
Automated Reconfigurable Mission Adaptive Digital Assembly Systems: A modular system of small robots and smart algorithms that can autonomously assemble large-scale structures in space. Cooperative Autonomous Distributed Robotic Exploration: A team of small lunar rovers designed to operate independently, navigating and making decisions together without human input. Lightweight Surface Manipulation System AutoNomy Capabilities Development for Surface Operations and Construction: A robotic arm system built for lunar construction tasks, developed through NASA’s Early Career Initiative. Space Exploration Vehicle: A pressurized rover prototype built for human exploration of planetary surfaces, offering attendees a look at how future astronauts may one day travel across the Moon or Mars. Mars Perseverance Rover: An exhibit detailing the rover’s mission to search for ancient microbial life and collect samples for future return to Earth. In-Situ Resource Utilization Pilot Excavator: A lunar bulldozer-dump truck hybrid designed to mine and transport regolith, supporting long-term exploration through the Artemis campaign. Visitors view NASA’s Space Exploration Vehicle on display.NASA/Robert Markowitz “These demonstrations help students see themselves in NASA’s mission and the next frontier of lunar exploration,” said Johnson Public Affairs Specialist Andrew Knotts. “They can picture their future as part of the team shaping how we live and work in space.”
Since the FIRST Championship relocated to Houston in 2017, NASA has mentored more than 250 robotics teams annually, supporting elementary through high school students. The agency continued that tradition for this year’s event, and celebrated the fusion of science, engineering, and creativity that defines both robotics and space exploration.
NASA’s booth draws crowds at FIRST Robotics 2025 with hands-on exhibits. NASA/Robert Markowitz Local students also had the chance to learn about the Texas High School Aerospace Scholars program, which offers Texas high school juniors hands-on experience designing space missions and solving engineering challenges—an early gateway into NASA’s world of exploration.
As the competition came to a close, students and mentors were already looking ahead to the next season—energized by new ideas, strengthened friendships, and dreams of future missions.
NASA volunteers at the FIRST Robotics World Championship on April 17, 2025. NASA/Robert Markowitz “It was a true privilege to represent NASA to so many inspiring students, educators, and mentors,” said Jeanette Snyder, aerospace systems engineer for Gateway. “Not too long ago, I was a robotics student myself, and I still use skills I developed through FIRST Robotics in my work as a NASA engineer. Seeing so much excitement around engineering and technology makes me optimistic for the future of space exploration. I can’t wait to see these students become the next generation of NASA engineers and world changers.”
With the enthusiastic support of volunteers, mentors, sponsors, and industry leaders, and NASA’s continued commitment to STEM outreach, the future of exploration is in bold, capable hands.
See the full event come to life in the panorama videos below.
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By NASA
Landing on the Moon is not easy, particularly when a crew or spacecraft must meet exacting requirements. For Artemis missions to the lunar surface, those requirements include an ability to land within an area about as wide as a football field in any lighting condition amid tough terrain.
NASA’s official lunar landing requirement is to be able to land within 50 meters (164 feet) of the targeted site and developing precision tools and technologies is critically important to mission success.
NASA engineers recently took a major step toward safe and precise landings on the Moon – and eventually Mars and icy worlds – with a successful field test of hazard detection technology at NASA’s Kennedy Space Center Shuttle Landing Facility in Florida.
A joint team from the Aeroscience and Flight Mechanics Division at NASA’s Johnson Space Center’s in Houston and Goddard Space Flight Center in Greenbelt, Maryland, achieved this huge milestone in tests of the Goddard Hazard Detection Lidar from a helicopter at Kennedy in March 2025.
NASA’s Hazard Detection Lidar field test team at Kennedy Space Center’s Shuttle Landing Facility in Florida in March 2025. NASA The new lidar system is one of several sensors being developed as part of NASA’s Safe & Precise Landing – Integrated Capabilities Evolution (SPLICE) Program, a Johnson-managed cross-agency initiative under the Space Technology Mission Directorate to develop next-generation landing technologies for planetary exploration. SPLICE is an integrated descent and landing system composed of avionics, sensors, and algorithms that support specialized navigation, guidance, and image processing techniques. SPLICE is designed to enable landing in hard-to-reach and unknown areas that are of potentially high scientific interest.
The lidar system, which can map an area equivalent to two football fields in just two seconds, is a crucial program component. In real time and compensating for lander motion, it processes 15 million short pulses of laser light to quickly scan surfaces and create real-time, 3D maps of landing sites to support precision landing and hazard avoidance.
Those maps will be read by the SPLICE Descent and Landing Computer, a high-performance multicore computer processor unit that analyzes all SPLICE sensor data and determines the spacecraft’s velocity, altitude, and terrain hazards. It also computes the hazards and determines a safe landing location. The computer was developed by the Avionics Systems Division at Johnson as a platform to test navigation, guidance, and flight software. It previously flew on Blue Origin’s New Shepard booster rocket.
The NASA team prepares the Descent and Landing Computer for Hazard Detection Lidar field testing at Kennedy Space Center. NASA For the field test at Kennedy, Johnson led test operations and provided avionics and guidance, navigation, and control support. Engineers updated the computer’s firmware and software to support command and data interfacing with the lidar system. Team members from Johnson’s Flight Mechanics branch also designed a simplified motion compensation algorithm and NASA’s Jet Propulsion Laboratory in Southern California contributed a hazard detection algorithm, both of which were added to the lidar software by Goddard. Support from NASA contractors Draper Laboratories and Jacobs Engineering played key roles in the test’s success.
Primary flight test objectives were achieved on the first day of testing, allowing the lidar team time to explore different settings and firmware updates to improve system performance. The data confirmed the sensor’s capability in a challenging, vibration-heavy environment, producing usable maps. Preliminary review of the recorded sensor data shows excellent reconstruction of the hazard field terrain.
A Hazard Detection Lidar scan of a simulated hazard field at Kennedy Space Center (left) and a combined 3D map identifying roughness and slope hazards. NASA Beyond lunar applications, SPLICE technologies are being considered for use on Mars Sample Return, the Europa Lander, Commercial Lunar Payload Services flights, and Gateway. The DLC design is also being evaluated for potential avionics upgrades on Artemis systems.
Additionally, SPLICE is supporting software tests for the Advancement of Geometric Methods for Active Terrain Relative Navigation (ATRN) Center Innovation Fund project, which is also part of Johnson’s Aeroscience and Flight Mechanics Division. The ATRN is working to develop algorithms and software that can use data from any active sensor – one measuring signals that were reflected, refracted, or scattered by a body’s surface or its atmosphere – to accurately map terrain and provide absolute and relative location information. With this type of system in place, spacecraft will not need external lighting sources to find landing sites.
With additional suborbital flight tests planned through 2026, the SPLICE team is laying the groundwork for safer, more autonomous landings on the Moon, Mars, and beyond. As NASA prepares for its next era of exploration, SPLICE will be a key part of the agency’s evolving landing, guidance, and navigation capabilities.
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