Johnson Celebrates AA and NHPI Heritage Month: Kimia Seyedmadani

Johnson Celebrates AA and NHPI Heritage Month: Kimia Seyedmadani

A quest for innovative ideas and development processes led biomedical engineer Kimia Seyedmadani to NASA’s Human Research Program (HRP) in 2018. After working for several years to design and develop cutting-edge medical devices, Seyedmadani became frustrated with resistance to innovative ideas and  the regulatory processes with respect to a treatment for pancreatic cancer.

“I got really frustrated and started asking, where are the revolutionary solutions for medical devices?” she said.

Seyedmadani explored a variety of opportunities seeking answers from aerospace companies and engineering programs before connecting with Keith Tucker, chief engineer for HRP’s Research Operation and Integration Group (ROI) and landing a Pathways internship with the program. “He allowed me to ask those questions, think outside of the box, and start closing those gaps in medical device development,” she said.

Her family was shocked that Seyedmadani decided to work for NASA, given that she was an Iranian immigrant. “My sister said it sounded like a Maz Jobrani joke,” she said. When she was hired as a full-time NASA employee in January 2020, Seyedmadani was told that she was the first Iranian immigrant born post-revolution to become a civil servant with the agency.

An Iranian woman with short hair wearing a green and blue skirt suit accepts a framed recognition from a woman with short hair and wearing a baseball jersey on a stage with an American flag, NASA flag, and NASA meatball.
Kimia Seyedmadani (center) receives the NASA Silver Achievement Medal from Michelle Frieling, director of the Human and Health Performance Directorate, during a ceremony in December 2023. She is joined by her sister, Dr. Katayoun Madani, Global Surgery Policy and Advocacy Baker Institute Fellow and clinical instructor of global surgery at Baylor College of Medicine.

Some aspects of Seyedmadani’s onboarding were different from other NASA employees. She recalls completing her internship trainings through NASA Protective Services and meeting with intelligence officers during times of heightened international tensions but says her peers and colleagues never treated her differently. “I’ve never had a bad experience at NASA,” she said. “I’ve had bad experiences outside of NASA. I had been called a terrorist, and as I was looking for jobs in aerospace, I did get asked to renounce my nationality. I said no, because I can’t say that I don’t have Iranian heritage and I don’t have friends in Iran.”

Since joining the Johnson team, Seyedmadani has worked to design, develop, and certify research payload kits and medical capabilities for Artemis vehicles, and to support ROI’s hardware and software development for HRP.  This work involves testing devices, coming up with certification and review processes, and ensuring that products meet established regulations and standards. “If a friend asks me what I do, I say I’m Wreck-It Ralph, I break things all the time,” she joked.

An Iranian woman with short hair and wearing an argyle cardigan and green polo shirt stands between a gray-haired man with glasses and wearing a gray polo and a medical device enclosed in a transparent case.
Kimia Seyedmadani, left, with colleague and mentor Keith Tucker, chief engineer for the Human Research Program’s Research Operation and Integration Group.

She also collaborates with the Food and Drug Administration (FDA) to verify that any changes NASA makes to an already-approved medical device, and its expedited flight certification processes, satisfy existing standards and tests perform by the device’s original manufacturer. She frequently interacts with the FDA’s Center for Devices and Radiological Health to identify opportunities to streamline certification processes without sacrificing device safety or quality. “I am learning a lot,” she says. “Before coming to NASA, I developed more than 50 medical devices for the medical device and diagnostic industry, but now I know that it doesn’t work exactly the same way in space. I see how necessity drives innovation.”

The value Johnson places on hiring employees who are naturally curious, open to learning, want to contribute to a team, and bring different knowledge or perspectives to the table is one of the center’s strengths, Seyedmadani said. Encouraging curiosity and learning is critical to both advancing human spaceflight and fostering diversity. “Tolerance is absolutely important to an inclusive environment, and knowing that no question is stupid, as long as you are giving 100%,” she said. She sees an opportunity for more social events and outreach that can help bridge the large age gaps that exist within some teams.

Seyedmadani said the connections she has made at Johnson and the support of her ROI hardware team and Human Systems Engineering and Integration Division management were key to her receiving a NASA Silver Achievement Medal in recognition for her work in HRP and the impact she has made on spaceflight hardware development processes.

“I have a wonderful team that makes me very comfortable, and it is privilege to be around them,” she said. “When questions come up, I can easily ask them, and they will be very open to answer them. That has made my NASA experience and working at JSC very fun for me.”  

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Linda E. Grimm

NASA, JAXA XRISM Spots Iron Fingerprints in Nearby Active Galaxy

NASA, JAXA XRISM Spots Iron Fingerprints in Nearby Active Galaxy

3 min read

NASA, JAXA XRISM Spots Iron Fingerprints in Nearby Active Galaxy

After starting science operations in February, Japan-led XRISM (X-ray Imaging and Spectroscopy Mission) studied the monster black hole at the center of galaxy NGC 4151.

“XRISM’s Resolve instrument captured a detailed spectrum of the area around the black hole,” said Brian Williams, NASA’s project scientist for the mission at the agency’s Goddard Space Flight Center in Greenbelt, Maryland. “The peaks and dips are like chemical fingerprints that can tell us what elements are present and reveal clues about the fate of matter as it nears the black hole.”

A XRISM spectrum of NGC 4151 with a multiwavelength snapshot of the galaxy in the background.
The Resolve instrument aboard XRISM (X-ray Imaging and Spectroscopy Mission) captured data from the center of galaxy NGC 4151, where a supermassive black hole is slowly consuming material from the surrounding accretion disk. The resulting spectrum reveals the presence of iron in the peak around 6.5 keV and the dips around 7 keV, light thousands of times more energetic that what our eyes can see. Background: An image of NGC 4151 constructed from a combination of X-ray, optical, and radio light.
Spectrum: JAXA/NASA/XRISM Resolve. Background: X-rays, NASA/CXC/CfA/J.Wang et al.; optical, Isaac Newton Group of Telescopes, La Palma/Jacobus Kapteyn Telescope; radio, NSF/NRAO/VLA

XRISM (pronounced “crism”) is led by JAXA (Japan Aerospace Exploration Agency) in collaboration with NASA, along with contributions from ESA (European Space Agency). It launched Sept. 6, 2023. NASA and JAXA developed Resolve, the mission’s microcalorimeter spectrometer.

NGC 4151 is a spiral galaxy around 43 million light-years away in the northern constellation Canes Venatici. The supermassive black hole at its center holds more than 20 million times the Sun’s mass.

The galaxy is also active, which means its center is unusually bright and variable. Gas and dust swirling toward the black hole form an accretion disk around it and heat up through gravitational and frictional forces, creating the variability. Some of the matter on the brink of the black hole forms twin jets of particles that blast out from each side of the disk at nearly the speed of light. A puffy donut-shaped cloud of material called a torus surrounds the accretion disk.

In fact, NGC 4151 is one of the closest-known active galaxies. Other missions, including NASA’s Chandra X-ray Observatory and Hubble Space Telescope, have studied it to learn more about the interaction between black holes and their surroundings, which can tell scientists how supermassive black holes in galactic centers grow over cosmic time.

A labeled diagram showing key components of an active galaxy.
This artist’s concept shows the possible locations of iron revealed in XRISM’s X-ray spectrum of NGC 4151. Scientists think X-ray-emitting iron is in the hot accretion disk, close to the black hole. The X-ray-absorbing iron may be further away, in a cooler cloud of material called a torus.
NASA’s Goddard Space Flight Center Conceptual Image Lab

The galaxy is uncommonly bright in X-rays, which made it an ideal early target for XRISM.

Resolve’s spectrum of NGC 4151 reveals a sharp peak at energies just under 6.5 keV (kiloelectron volts) — an emission line of iron. Astronomers think that much of the power of active galaxies comes from X-rays originating in hot, flaring regions close to the black hole. X-rays bouncing off cooler gas in the disk causes iron there to fluoresce, producing a specific X-ray peak. This allows astronomers to paint a better picture of both the disk and erupting regions much closer to the black hole.

The spectrum also shows several dips around 7 keV. Iron located in the torus caused these dips as well, although through absorption of X-rays, rather than emission, because the material there is much cooler than in the disk. All this radiation is some 2,500 times more energetic than the light we can see with our eyes.

Iron is just one element XRISM can detect. The telescope can also spot sulfur, calcium, argon, and others, depending on the source. Each tells astrophysicists something different about the cosmic phenomena scattered across the X-ray sky.

XRISM is a collaborative mission between JAXA and NASA, with participation by ESA. NASA’s contribution includes science participation from CSA (Canadian Space Agency).

By Jeanette Kazmierczak
NASA’s Goddard Space Flight Center, Greenbelt, Md.

Media Contact:
Claire Andreoli
301-286-1940
claire.andreoli@nasa.gov
NASA’s Goddard Space Flight Center, Greenbelt, Md.

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1942: Engine Roars to Life in First Test at Future NASA Glenn

1942: Engine Roars to Life in First Test at Future NASA Glenn

3 min read

Preparations for Next Moonwalk Simulations Underway (and Underwater)

A black-and-white image of a large group of men wearing suits in a control room. One NACA leader presses a button, and another spins a crank.
Dr. George W. Lewis, the NACA’s Director of Aeronautical Research, and John F. Victory, NACA Secretary, at the controls to initiate the Engine Propeller Research Building test on May 8, 1942. Others gathered include Airport Manager John Berry, former City Manager William Hopkins, NACA Assistant Secretary Ed Chamberlain, Langley Engineer-in-Charge Henry Reid, NACA engineer Ernest Whitney, Executive Engineer Carlton Kemper, Construction Manager Raymond Sharp, as well as Clifford Gildersleeve, Walter Beam, and other representatives of the Cleveland Chamber of Commerce.
Credit: NASA

In a crowded control room on May 8, 1942, National Advisory Committee for Aeronautics (NACA) leaders George Lewis and John Victory pushed a button and spun a crank that activated a massive piston engine in the adjacent test cell of the Engine Propeller Research Building (EPRB). This commenced the first test conducted at the NACA’s Aircraft Engine Research Laboratory (today, NASA’s Glenn Research Center) in Cleveland.

A black-and-white-image of a concrete building with a sign above the door that says, “NACA Engine Propeller Research.”
The Engine Propeller Research Building, or Prop House as it was commonly called, originally contained two test stands to study full-scale piston engines. Additional test cells were soon added. The facility was built in a wooded area on the northern edge of the NACA’s Aircraft Engine Research Laboratory campus to muffle the engine noise. After many delays, the first check-out run took place the evening of April 30, 1942.
Credit: NASA

The event was a key milestone for the United States during the otherwise troublesome period that followed the Pearl Harbor attack. Japan’s rapid seizure of large swaths of the Pacific and its capture of 15,000 U.S. troops increased pressure on the NACA to complete its new laboratory. The military needed the new laboratory, whose construction was behind schedule, to improve engine cooling, turbo-supercharging, and fuels for its aircraft, including the revolutionary new Boeing B–29 Superfortress. Besides the EPRB, the hangar was the only other building completed in the 15 months since ground was first broken at the Cleveland site.

Guests coming from Washington, D.C., to witness the first test arrived at the hangar shortly after 9 a.m. that day. They were soon joined by local officials and invited members of the press. Just before 10 a.m., they piled into cars and were driven through the mud to the EPRB, where engineer Arnold Biermann and head mechanic Melvin Harrison had a Wright R-2600 Cyclone engine ready to run. Local politicians and other NACA officials looked on as Lewis and Victory initiated the test, an evaluation of lubricating fuels. Once activated, the engine roared, and banks of instrumentation began capturing the test data for the research engineers.   

View of construction at the Aircraft Engine Research Laboratory (now, NASA’s Glenn Research Center) in 1942. Building supplies are scattered across the dirt-covered landscape and several buildings can be seen under construction.
A view of construction at the Aircraft Engine Research Laboratory (now, NASA’s Glenn Research Center) in 1942. The Steam Plant is to the left. The photograph was likely taken from the Administration Building, which was also under construction.
Credit: NASA

Afterward, construction manager Raymond Sharp gave the group a tour of other construction sites at the lab. They then departed to the Union Club downtown for a luncheon, where Victory noted, “We are losing this war at present, and the steel we need for this laboratory is also needed for destroyers in the Atlantic and boats in the Pacific. If the powers that be decide that the steel is more valuable elsewhere in the war effort, we may never finish it.”

Just days later, however, Henry “Hap” Arnold, Commander of the U.S. Army Air Forces, recommended that completion of the laboratory should be prioritized. Congress allocated additional funding, the military provided the necessary supplies, and contractors were pressured to meet their deadlines.

These measures spurred significant progress at the new laboratory. Over the following year, additional facilities were completed, and large groups of employees transferred to Cleveland from Langley Memorial Aeronautical Laboratory (today, NASA’s Langley Research Center in Hampton, Virginia). The effort paid off and, in the end, the NACA met its original deadlines. A formal dedication of the new laboratory took place on May 20, 1943.

Keep Exploring:

More About NASA’s Glenn Research Center

More NASA Glenn History

NASA Glenn’s Arrival in Cleveland

Bringing the Future Within Reach—Celebrating 75 Years of the NASA John H. Glenn Research Center

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Robert S. Arrighi

International SWOT Mission Can Improve Flood Prediction 

International SWOT Mission Can Improve Flood Prediction 

6 Min Read

International SWOT Mission Can Improve Flood Prediction 

An aerial photo of a flooded neighborhood in North Dakota
Flooding on the Souris River inundated this community in North Dakota in 2011. The U.S.-French SWOT satellite is giving scientists and water managers a new tool to look at floods in 3D, information that can improve predictions of where and how often flooding will occur.

A partnership between NASA and the French space agency, the satellite is poised to help improve forecasts of where and when flooding will occur in Earth’s rivers, lakes, and reservoirs.

Rivers, lakes, and reservoirs are like our planet’s arteries, carrying life-sustaining water in interconnected networks. When Earth’s water cycle runs too fast, flooding can result, threatening lives and property. That risk is increasing as climate change alters precipitation patterns and more people are living in flood-prone areas worldwide.

Scientists and water managers use many types of data to predict flooding. This year they have a new tool at their disposal: freshwater data from the Surface Water and Ocean Topography (SWOT) satellite. The observatory, a collaboration between NASA and the French space agency, CNES (Centre National d’Études Spatiales), is measuring the height of nearly all water surfaces on Earth. SWOT was designed to measure every major river wider than about 300 feet (100 meters), and preliminary results suggest it may be able to observe much smaller rivers.

A visual map of data from monsoon rains in northeast Bangladesh
Flooding from monsoon rains covers a wide region of northeast Bangladesh in this Oct. 8, 2023, image showing data from SWOT. The U.S.-French satellite is the first to provide timely, precise water surface elevation information over entire regions at high resolution, enabling improved flooding forecasts.

Stream gauges can accurately measure water levels in rivers, but only at individual locations, often spaced far apart. Many rivers have no stream gauges at all, particularly in countries without resources to maintain and monitor them. Gauges can also be disabled by floods and are unreliable when water overtops the riverbank and flows into areas they cannot measure.

SWOT provides a more comprehensive, 3D look at floods, measuring their height, width, and slope. Scientists can use this data to better track how floodwaters pulse across a landscape, improving predictions of where flooding will occur and how often.

A visual map from above of river slope data from California's Sacramento River.
SWOT river slope data — like that depicted here for California’s Sacramento River — can improve predictions of how fast water flows through rivers and off landscapes. To calculate slope, scientists subtract the lower water elevation (right) from the higher one (left) and divide by segment length.

Building a Better Flood Model

One effort to incorporate SWOT data into flood models is led by J. Toby Minear of the Cooperative Institute for Research in Environmental Sciences (CIRES) in Boulder, Colorado. Minear is investigating how to incorporate SWOT data into the National Oceanic and Atmospheric Administration’s National Water Model, which predicts the potential for flooding and its timing along U.S. rivers. SWOT freshwater data will fill in spatial gaps between gauges and help scientists like Minear determine the water levels (heights) at which flooding occurs at specific locations along rivers.

A photo of a field researcher standing on the edge of a river in New Zealand, setting up a GPS unit on a tripod.
UNC-Chapel Hill doctoral student Marissa Hughes levels a tripod to install a GPS unit to precisely measure the water surface elevation of a segment of New Zealand’s Waimakariri River. The measurements were used to calibrate and validate data from the U.S.-French SWOT satellite

He expects SWOT to improve National Water Model data in multiple ways. For example, it will provide more accurate estimates of river slopes and how they change with streamflow. Generally speaking, the steeper a river’s slope, the faster its water flows. Hydrologic modelers use slope data to predict the speed water moves through a river and off a landscape.

SWOT will also help scientists and water managers quantify how much water lakes and reservoirs can store. While there are about 90,000 relatively large U.S. reservoirs, only a few thousand of them have water-level data that’s incorporated into the National Water Model. This limits scientists’ ability to know how reservoir levels relate to surrounding land elevations and potential flooding. SWOT is measuring tens of thousands of U.S. reservoirs, along with nearly all natural U.S. lakes larger than about two football fields combined.

Some countries, including the U.S., have made significant investments in river gauging networks and detailed local flood models. But in Africa, South Asia, parts of South America, and the Arctic, there’s little data for lakes and rivers. In such places, flood risk assessments often rely on rough estimates. Part of SWOT’s potential is that it will allow hydrologists to fill these gaps, providing information on where water is stored on landscapes and how much is flowing through rivers.

Tamlin Pavelsky, NASA’s SWOT freshwater science lead and a researcher at the University of North Carolina at Chapel Hill, says SWOT can help address the growing threat of flooding from extreme storms fueled by climate change. “Think about Houston and Hurricane Harvey in 2017,” he said. “It’s very unlikely we would have seen 60 inches of rain from one storm without climate change. Societies will need to update engineering design standards and floodplain maps as intense precipitation events become more common.”

Pavelsky says these changes in Earth’s water cycle are altering society’s assumptions about floods and what a floodplain is. “Hundreds of millions of people worldwide will be at increased risk of flooding in the future as rainfall events become increasingly intense and population growth occurs in flood-prone areas,” he added.

SWOT flood data will have other practical applications. For example, insurers can use models informed by SWOT data to improve flood hazard maps to better estimate an area’s potential damage and loss risks. A major reinsurance company, FM Global, is among SWOT’s 40 current early adopters — a global community of organizations working to incorporate SWOT data into their decision-making activities.

“Companies like FM Global and government agencies like the U.S. Federal Emergency Management Agency can fine tune their flood models by comparing them to SWOT data,” Pavelsky said. “Those better models will give us a more accurate picture of where and how often floods are likely to happen.”

More About the Mission

Launched on Dec. 16, 2022, from Vandenberg Space Force Base in central California, SWOT is now in its operations phase, collecting data that will be used for research and other purposes.

SWOT was jointly developed by NASA and CNES, with contributions from the Canadian Space Agency (CSA) and the UK Space Agency. NASA’s Jet Propulsion Laboratory, managed for the agency by Caltech in Pasadena, California, leads the project’s U.S. component. For the flight system payload, NASA provided the KaRIn instrument, a GPS science receiver, a laser retroreflector, a two-beam microwave radiometer, and NASA instrument operations. CNES provided the Doppler Orbitography and Radioposition Integrated by Satellite (DORIS) system, dual frequency Poseidon altimeter (developed by Thales Alenia Space), KaRIn radio-frequency subsystem (together with Thales Alenia Space and with support from the UK Space Agency), the satellite platform, and ground operations. CSA provided the KaRIn high-power transmitter assembly. NASA provided the launch vehicle and the agency’s Launch Services Program, based at Kennedy Space Center, and managed the associated launch services.

For more on SWOT, visit:

https://swot.jpl.nasa.gov/

News Media Contact

Jane J. Lee / Andrew Wang

Jet Propulsion Laboratory, Pasadena, Calif.

818-354-0307 / 626-379-6874

jane.j.lee@jpl.nasa.gov / andrew.wang@jpl.nasa.gov

Written by Alan Buis

2024-060

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20 Years Ago: NASA Selects its 19th Group of Astronauts

20 Years Ago: NASA Selects its 19th Group of Astronauts

On May 6, 2004, NASA announced the selection of its 19th group of astronauts. The group comprised 11 candidates – two pilots, six mission specialists, and three educator mission specialists – and included two women, two Hispanic Americans, and one African American. Three astronauts from the Japan Aerospace Exploration Agency (JAXA) joined the 11 NASA astronauts for the 20-month training program to qualify as mission specialists, following which they became eligible for flight assignments. They comprised the last group of astronauts selected to fly on the space shuttle. All members of the group completed at least one spaceflight, with five making a single trip into space, four making two trips, and five going three times. Several remain on active status and available for future flight assignments.

The Group 19 NASA and Japan Aerospace Exploration Agency astronaut candidates pose for a group photo – front row, Robert L. Satcher, left, Dorothy “Dottie” M. Metcalf-Lindenburger, Christopher J. Cassidy, Richard R. Arnold, Randolph J. Bresnik, and Thomas H. Marshburn; back row, Akihiko “Aki” Hoshide, left, Shannon Walker, Joseph M. Acaba, James P. Dutton, R. Shane Kimbrough, Satoshi Furukawa, José M. Hernández, and Naoko Yamazaki
The Group 19 NASA and Japan Aerospace Exploration Agency astronaut candidates pose for a group photo – front row, Robert L. Satcher, left, Dorothy “Dottie” M. Metcalf-Lindenburger, Christopher J. Cassidy, Richard R. Arnold, Randolph J. Bresnik, and Thomas H. Marshburn; back row, Akihiko “Aki” Hoshide, left, Shannon Walker, Joseph M. Acaba, James P. Dutton, R. Shane Kimbrough, Satoshi Furukawa, José M. Hernández, and Naoko Yamazaki.

In a ceremony held at the Stephen F. Udvar-Hazy Center of the Smithsonian Institution’s National Air and Space Museum in Chantilly, Virginia, NASA Administrator Sean C. O’Keefe and Chief of the Astronaut Office Kent V. Rominger introduced the 11 new astronaut candidates, the first selected since the Columbia accident. John H. Glenn, representing the original Mercury 7 astronauts selected in 1959, also attended the ceremony. The newest class of astronaut candidates included Randolph J. Bresnik and James P. Dutton as the two pilot candidates; Christopher J. Cassidy, José M. Hernández, R. Shane Kimbrough, Thomas H. Marshburn, Robert “Bobby” L. Satcher, and Shannon Walker as the mission specialists; and Joseph M. Acaba, Richard R. Arnold, and Dorothy “Dottie” M. Metcalf-Lindenburger as the educator astronauts. Under a joint agreement between the two agencies, JAXA astronauts Satoshi Furukawa, Akihiko “Aki” Hoshide, and Naoko Yamazaki, selected in 1999, joined the 11 NASA astronauts for the 20-month certification program.

Group 19 astronaut candidates during survival training at Brunswick Naval Air Station in Maine.
Group 19 astronaut candidates during survival training at Brunswick Naval Air Station in Maine.

The 11 NASA and three JAXA astronaut candidates began their 18-month training and certification period in June 2004. The training included scientific and technical briefings, intensive instruction in shuttle and International Space Station systems, physiological training, T-38 flight training, and water and wilderness survival training. They also received orientation tours at all NASA centers. They completed the astronaut candidate training in February 2006 and qualified for various technical assignments within the astronaut office and for future flight assignments.

Group 19 patch NASA astronaut Joseph M. Acaba NASA astronaut Richard R. Arnold
Group 19 patch, left, and NASA astronauts Joseph M. Acaba and Richard R. Arnold.

Per tradition, the previous astronaut class provided the nickname for Group 19: The Peacocks. The Group 19 astronauts designed their patch, that included elements such as the American and Japanese flags, a stylized astronaut pin, fourteen stars representing the astronauts, a book – representing knowledge and learning – with a Roman numeral XIX on it, and the Earth, Moon, and Mars, representing current and future exploration. The border of the patch contained the Latin words Explorandi Concitandi Docendi Gratia, meaning “for the sake of exploring, inspiring, and teaching.”

Acaba, one of the three educator astronauts, hails from California. He received his first spaceflight assignment as a mission specialist on STS-119, the 2009 mission that brought the final truss segment to the space station. He conducted two spacewalks, one of them with fellow Peacock Arnold. Acaba then traveled to the station for his second mission, this time on a Russian Soyuz spacecraft, to serve as a flight engineer during Expedition 31 and 32 in 2012, during which the crew welcomed the first commercial cargo vehicle, a SpaceX Dragon. He completed his third mission as a flight engineer during Expedition 53 and 54 in 2012 to 2013, performing a single spacewalk. Acaba spent a total of 306 days in space and 19 hours and 46 minutes outside during three spacewalks. He has served as the Chief of the Astronaut Office since 2023.

The second of the three educator astronauts, Arnold, a resident of Maryland, flew with Acaba on STS-119 in 2009. He conducted two spacewalks, one of them with fellow Peacock Acaba. His second flight took place nine years later when he served as a flight engineer during Expedition 55 and 56 and performed three more spacewalks. He has logged 209 days in space and accumulated 32 hours and 4 minutes of spacewalk time during five excursions.

Group 19 NASA astronaut Randolph J. Bresnik Group 19 NASA astronaut Christopher J. Cassidy Group 19 NASA astronaut James P. Dutton
Group 19 NASA astronauts Randolph J. Bresnik, left, Christopher J. Cassidy, and James P. Dutton.

Bresnik, a U.S. Marine test pilot from California, received his first spaceflight assignment as a mission specialist on STS-129, a utilization and logistics flight that brought two External Logistics Carriers to the space station. He conducted two spacewalks during the 11-day flight, including one with fellow Peacock Satcher. During his second spaceflight in 2017, Bresnik flew to the station on a Soyuz, spending 139 days in space, first as a flight engineer during Expedition 52 and then as commander of Expedition 53, and conducted three more spacewalks. He logged a total of 149 days in space, and 32 hours outside during five spacewalks. Since 2018, Bresnik has served as assistant to the chief of the astronaut office for exploration.

A native of Maine and a U.S. Navy SEAL, Cassidy completed three spaceflights during his NASA career. On his first flight in 2009, he flew as a mission specialist on STS-127, the flight that delivered the Japanese Kibo Exposed Facility to the station. He performed three spacewalks during the 16-day mission, two of them with fellow Peacock Marshburn. He returned to the space station in 2013 via a Soyuz and served as a flight engineer during Expeditions 35 and 36, spending 166 days in space and conducting three spacewalks including one terminated early when fellow spacewalker Luca Parmitano’s helmet began filling with water. On his third mission in 2020, Cassidy served as flight engineer during Expedition 62 and commanded Expedition 63. He conducted four more spacewalks. He spent a total of 378 days in space and 54 hours 51 minutes outside on nine spacewalks.

A native of Oregon and a colonel in the U.S. Air Force, Dutton flew as pilot on STS-131, a resupply mission to the space station in 2010. Fellow Peacocks Metcalf-Lindenburger and Yamazaki accompanied Dutton on the flight. The Multi-Purpose Logistics Module (MPLM) brought 27,000 pounds of supplies to the station, and returned 6,000 pounds of science, hardware, and trash back to the ground. Dutton logged 15 days in space.

Group 19 NASA astronaut José M. Hernández Group 19 NASA astronaut R. Shane Kimbrough Group 19 NASA astronaut Thomas H. Marshburn
Group 19 NASA astronauts José M. Hernández, left, R. Shane Kimbrough, and Thomas H. Marshburn.

California native Hernández joined the Materials and Processes Branch at NASA’s Johnson Space Center (JSC) in Houston prior to his selection as an astronaut. He made his one spaceflight on STS-128 in 2009, an expedition crew member rotation flight that also delivered 18,000 pounds of supplies, cargo, and science to the space station inside an MPLM. He logged 14 days in space. The 2023 motion picture “A Million Miles Away” chronicled Hernández’s journey to become an astronaut.

Texas native and U.S. Army aviator Kimbrough joined JSC in 2000 at Ellington Field’s Aircraft Operations Division before joining the astronaut corps. The first NASA astronaut from Group 19 to get a flight assignment, Kimbrough flew as a mission specialist on STS-126 in 2008. During the 16-day mission, the astronauts carried out an expedition crew member rotation and resupplied the station with 14,000 pounds of supplies including facilities to enable six-person occupancy of the station. Kimbrough completed two spacewalks during STS-126. For his second spaceflight, Kimbrough launched on a Soyuz and flew as a flight engineer on Expedition 49, becoming commander of Expedition 50 a week later. During the 173-day mission in 2016-2017, he conducted four spacewalks. For his third flight, Kimbrough served as the commander of Crew-2 and as flight engineer during Expedition 65/66 in 2021, flying with fellow Peacock Hoshide. During the 199-day mission he conducted three more spacewalks, bringing his total to nine and more than 59 hours outside the station. During his three spaceflights, he accumulated 388 days in space.

A native of North Carolina, Marshburn served as a flight surgeon at JSC before his selection as an astronaut, supporting Shuttle/Mir, space shuttle, and space station crews. On his first spaceflight, the 16-day STS-127 in 2009, he served as a mission specialist to help deliver the Japanese Kibo Exposed Facility and performed three spacewalks, two of them with fellow Peacock Cassidy. On his second spaceflight, Marshburn launched on a Soyuz and served as flight engineer on Expedition 34/35 in 2012 and 2013. During the 145-day mission, he completed one spacewalk. On his third mission, he served as Crew-3 pilot and flight engineer on the 176-day Expedition 66/67, completing one more spacewalk to bring his total to five, spending 31 hours outside the station. On his three flights, Marshburn spent 377 days in space.

Group 19 NASA astronaut Dorothy “Dottie” M. Metcalf-Lindenburger Group 19 NASA astronaut Robert L. Satcher Group 19 NASA astronaut Shannon Walker
Group 19 NASA astronauts Dorothy “Dottie” M. Metcalf-Lindenburger, left, Robert L. Satcher, and Shannon Walker.

The third educator astronaut, Denver native Metcalf-Lindenburger made her one spaceflight as a mission specialist on STS-131, flying with fellow Peacocks Dutton and Yamazaki. During the 15-day mission in 2010, the astronauts resupplied the station, including bringing 27,000 pounds of supplies in the MPLM and returning 6,000 pounds of hardware and science back to Earth.

A native of Virginia, Satcher worked as an orthopedic surgeon before his selection as an astronaut. He made his one spaceflight as a mission specialist on STS-129, an 11-day flight in 2009. During the utilization and logistics flight that brought two External Logistics Carriers to the station, Satcher performed two spacewalks, including one with fellow Peacock Bresnik, totaling 12 hours 19 minutes.

Walker holds the honor as the first native Houstonian selected as an astronaut. She worked for many years in flight operations at JSC prior to her selection. On her first spaceflight in 2010, Walker launched on a Soyuz and served as a flight engineer on the 163-day Expedition 24/25. For her second flight, she served as a mission specialist on Crew-1, the first operational flight of the SpaceX Crew Dragon, and as a flight engineer during Expedition 64 and commander of Expedition 65 in 2020 and 2021. Including that 167-day flight, Walker has logged 330 days in space. She currently serves as the deputy chief of the astronaut office.

Astronaut Satoshi Furukawa of the Japan Aerospace Exploration Agency Astronaut Akihiko “Aki” Hoshide of the Japan Aerospace Exploration Agency Astronaut Naoko Yamazaki of the Japan Aerospace Exploration Agency
Astronauts Satoshi Furukawa, left, Akihiko “Aki” Hoshide, and Naoko Yamazaki of the Japan Aerospace Exploration Agency who joined NASA’s Group 19 for training.

Born in Yokohama, Furukawa earned a medical degree and worked as a researcher in gastrointestinal surgery before JAXA selected him as an astronaut in 1999. He joined Group 19 in June 2004 to certify as a mission specialist. For his first spaceflight, Furukawa launched on a Soyuz and served as a flight engineer during Expedition 28/29, a 167-day mission in 2011. In 2023-24, he flew as a mission specialist on Crew 7 and as a flight engineer on Expedition 69/70, spending 199 days in space. Furukawa has accumulated 366 days in orbit and remains on active status.

Hoshide, born in Tokyo, joined JAXA in 1992 and seven years later the agency selected him as an astronaut. After finishing his mission specialist certification in 2006, JAXA chose him to fly on STS-124, the flight that delivered the Kibo pressurized module to the space station in 2008. Four years later, Hoshide traveled to the space station a second time to serve as a flight engineer during Expedition 32/33. He performed three spacewalks totaling 28 hours and 17 minutes. In 2021, he returned to the station as a member of Crew-2, flying with fellow Peacock Kimbrough. He served as a flight engineer during Expedition 65 and commander of Expedition 66, spending an additional 198 days in space. Hoshide accumulated 340 days in orbit and remains on active status.

An engineer born in Chiba, Yamazaki joined JAXA in 1996, three years before the agency selected her as an astronaut. She completed her mission specialist certification in 2006 and in 2010, made her one spaceflight on STS 131, flying with fellow Peacocks Dutton and Metcalf-Lindenburger. During the 15-day mission, the astronauts transferred 27,000 pounds of supplies to the station from the MPLM and returned 6,000 pounds back to Earth. Yamazaki operated both the shuttle and station remote manipulator systems during the flight. The STS-131 mission took place while fellow JAXA astronaut Soichi Noguchi served as an Expedition 23 flight engineer, marking the first time two Japanese astronauts flew in space at the same time.

Summary of spaceflights by Group 19 astronauts
Summary of spaceflights by Group 19 astronauts.

The Group 19 NASA and JAXA astronauts have made and continue to make significant contributions to the space station – assembly, research, maintenance, logistics, management – traveling to space and back using three different spacecraft – space shuttle, Soyuz, and Crew Dragon. Kimbrough, Marshburn, and Hoshide flew all three during their careers. As a group, they completed 28 flights spending 2,913 days, or nearly eight years, in space. They comprised the last group selected to fly on the space shuttle before its retirement in 2011. Eight of the 14 performed 43 spacewalks spending 275 hours and 46 minutes, or more than 11 days, outside the spacecraft. With several of the astronauts still on active duty, the story of Group 19 remains unfinished.

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Kelli Mars