Teams at NASA’s Stennis Space Center complete a safe lift and install of an interstage simulator unit needed for future testing of NASA’s exploration upper stage (EUS) in the B-2 position of the Thad Cochran Test Stand. The lift and install, completed over a two-week period that began Oct. 10, marks a milestone for testing the new SLS (Space Launch System) rocket stage that will fly on future Artemis missions to the Moon and beyond. The EUS will undergo a series of Green Run tests of its integrated systems prior to its first flight. During testing, the interstage simulator component will function like the SLS interstage section that helps protect the upper stage during Artemis launches.

NASA Stennis Safety and Mission Assurance Director Gary Benton, right, presents a token of appreciation to keynote speaker and former NASA astronaut Dr. Nancy Currie-Gregg at the annual Safety and Health Day in the StenniSphere Auditorium at NASA’s Stennis Space Center on Sept. 26. The yearly event is a reminder to the NASA Stennis workforce about the importance of a safe work environment.

NASA’s Stennis Space Center near Bay St. Louis, Mississippi, is often associated with hot fires coming from the center’s long history of hot fire testing engines and stages that have helped power the nation’s space dreams since the first humans stepped foot on the Moon. However, NASA Stennis turned into a Winter Wonderland Jan. 21 when America’s largest rocket propulsion test site received a historic amount of snow across the unique federal city. Hancock County, where NASA Stennis is located, received five to seven inches of snow, according to the National Weather Service. It marked the most snow the county has received in 61 years. The December 31, 1963, snowfall holds the record at 10 inches of snow for Bay St. Louis, Mississippi.

: NASA program specialist Miyoshi Collins talks with an annual ESSENCE Fest audience in New Orleans on July 5 following a video presentation from NASA astronaut Jeannette Epps aboard the International Space Station. NASA representatives participated in a panel presentation about women in space during the cultural festival held each year during the Fourth of July weekend.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Tim Stiglets’ work at NASA’s Stennis Space Center gives him a front-row seat to the growth and opportunity potential of NASA Stennis. His work ranges from managing data for how a test stand is configured to tracking the configuration of NASA Stennis buildings and utilities systems that make up the infrastructure for America’s largest rocket propulsion test site.

NASA Stennis Director John Bailey hosted a Java with John session with Office of Procurement employees on Oct. 15. Java with John is an employee-led discussion in a casual environment aimed at fostering a culture in which employees are welcome to share what matters most to them at work.

NASA’s Stennis Space Center and NASA Shared Services Center leaders commemorate NASA Day of Remembrance on Jan. 25 with a ceremony at the south Mississippi site. Rodney McKellip, NASA Stennis associate director (right), and Ken Newton, NASA Shared Services Center acting executive director, observe a moment of silence as employees honor members of the NASA family who lost their lives while furthering the cause of exploration and discovery, including the crews of Apollo 1, and space shuttles Challenger and Columbia.

NASA conducts a full-duration RS-25 hot fire Feb. 23 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, continuing a key test series for future Artemis flights of NASA’s SLS (Space Launch System) rocket. During the seventh test of the 12-test series, operators fired the certification engine for 550 seconds and up to a 113% power level. The hot fire followed installation of a second production engine nozzle that will provide additional performance data on the upgraded unit. The test series is the second, and final, series to certify restart production of the upgraded engines by lead contractor Aerojet Rocketdyne, an L3Harris Technologies company. New engines will help power NASA’s SLS rocket on Artemis missions to the Moon and beyond, beginning with Artemis V. NASA and Aerojet Rocketdyne modified 16 former space shuttle engines for use on Artemis missions I through IV. NASA completed an initial 12-test certification series with the upgraded components in June 2023. Four RS-25 engines fire simultaneously to help launch each SLS rocket, producing up to 2 million pounds of combined thrust.

Operators fire the RS-25 engine at NASA’s Stennis Space Center on Nov. 15, 2023, up to the 113% power level. The first four Artemis missions are using modified space shuttle main engines that can power up to 109% of their rated level. New RS-25 engines will power up to the 111% level to provide additional thrust, so testing up to the 113% power level provides a margin of operational safety.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

The new production nozzle is lifted on the Fred Haise Test Stand at NASA’s Stennis Space Center on Feb. 6. Crews used specially adapted procedures and tools to swap out the nozzles with the engine in place.

Teams at NASA’s Stennis Space Center complete a safe lift and install of an interstage simulator unit needed for future testing of NASA’s exploration upper stage (EUS) in the B-2 position of the Thad Cochran Test Stand. The lift and install, completed over a two-week period that began Oct. 10, marks a milestone for testing the new SLS (Space Launch System) rocket stage that will fly on future Artemis missions to the Moon and beyond. The EUS will undergo a series of Green Run tests of its integrated systems prior to its first flight. During testing, the interstage simulator component will function like the SLS interstage section that helps protect the upper stage during Artemis launches.

NASA Associate Administrator Jim Free stands with leaders from NASA Stennis and the NASA Shared Services Center during a visit on July 16 to the south Mississippi site. Free also met with representatives of commercial companies engaged in onsite propulsion activities. Pictured left to right is Jill Castiglione, NASA Stennis executive assistant; Troy Frisbie, NASA Stennis chief of staff; Nikki Tubbs, NASA Shared Services Center director of support operations; Anita Harrell, NASA Shared Services Center executive director; Free; John Bailey, NASA Stennis director; Rodney McKellip, NASA Stennis associate director; Troy Taylor, NASA Shared Services Center deputy director of service delivery; and Jessie Shiyou, NASA Shared Services Center executive assistant.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Having reached the halfway point in a 12-test RS-25 certification series, teams at NASA’s Stennis Space Center will install a second production nozzle (shown) on the engine to gather additional performance data during the remaining scheduled hot fires.

NASA Stennis employees visit booths with safety and health information in the Roy S. Estess Building during the annual Safety and Health Day at NASA’s Stennis Space Center on Sept. 26. The yearly event is a reminder to the NASA Stennis workforce about the importance of a safe work environment and provided the opportunity for a health screening.

Once crews place the RS-25 engine on the engine vertical installer and it is attached to the Fred Haise Test Stand at NASA’s Stennis Space Center, the installer moves away, and technicians ensure all connections to the test facility are complete for the second certification test series to collect data for the final RS-25 design certification review.

NASA completed a full-duration, 500-second hot fire of an RS-25 certification engine Jan. 27, marking the halfway point in a critical test series to support future SLS (Space Launch System) missions to the Moon and beyond as NASA explores the secrets of the universe for the benefit of all

NASA completed a full-duration, 500-second hot fire of an RS-25 certification engine Jan. 17, continuing a critical test series to support future SLS (Space Launch System) missions to the Moon and beyond as NASA explores the secrets of the universe for the benefit of all.

NASA conducted a full-duration RS-25 hot fire April 3 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, achieving a major milestone for future Artemis flights of NASA’s SLS (Space Launch System) rocket. It marked the final test of a 12-test series to certify production of new RS-25 engines by lead contractor Aerojet Rocketdyne, an L3Harris Technologies company, to help power NASA’s SLS rocket on Artemis missions to the Moon and beyond, beginning with Artemis V.

Teams at NASA’s Stennis Space Center complete a safe lift and install of an interstage simulator unit needed for future testing of NASA’s exploration upper stage (EUS) in the B-2 position of the Thad Cochran Test Stand. The lift and install, completed over a two-week period that began Oct. 10, marks a milestone for testing the new SLS (Space Launch System) rocket stage that will fly on future Artemis missions to the Moon and beyond. The EUS will undergo a series of Green Run tests of its integrated systems prior to its first flight. During testing, the interstage simulator component will function like the SLS interstage section that helps protect the upper stage during Artemis launches.

The NASA Office of the Chief Information Officer Integrated Design and Assurance Systems team are shown at the Thad Cochran Test Stand (B-1/B-2) during a tour of NASA Stennis on Oct. 9. To accomplish NASA’s vision, the agency depends heavily on many things and information technology is key among them. Information technology capabilities enable NASA’s discoveries, allow sharing of mission data, improve workforce productivity, and increase mission quality, resilience, and cost-effectiveness. To enable success for NASA’s mission portfolio, the Office of the Chief Information Officer goals are to deliver great customer experiences; achieve consistent operational excellence; transform NASA through information and technology; and ensure proactive, resilient cybersecurity – all delivered by an exceptional team.

NASA Stennis Director John Bailey welcomes employees and guests to the Silver Snoopy Award ceremony on Aug. 21 at NASA’s Stennis Space Center. NASA’s Space Flight Awareness Program recognizes outstanding job performances and contributions by civil servants and contract employees. It focuses on excellence in quality and safety in support of human spaceflight.

These images show how teams rolled out, or moved, the completed core stage for NASA’s Space Launch System rocket from NASA’s Michoud Assembly Facility in New Orleans. Crews moved the flight hardware for the first Artemis mission to NASA’s Pegasus barge on Jan. 8 in preparation for the core stage Green Run test series at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. Pegasus, which was modified to ferry SLS rocket hardware, will transport the core stage from Michoud to Stennis for the comprehensive core stage Green Run test series. Once at Stennis, the Artemis rocket stage will be loaded into the B-2 Test Stand for the core stage Green Run test series. The comprehensive test campaign will progressively bring the entire core stage, including its avionics and engines, to life for the first time to verify the stage is fit for flight ahead of the launch of Artemis I. Assembly and integration of the core stage and its four RS-25 engines has been a collaborative, multistep process for NASA and its partners Boeing, the core stage lead contractor, and Aerojet Rocketdyne, the RS-25 engines lead contractor. Together with four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit and Orion, is part of NASA’s backbone for deep space exploration and the Artemis lunar program.

Rodney McKellip, associate director of NASA’s Stennis Space Center, and Gary Benton, director of the NASA Stennis Safety and Mission Assurance Directorate, are shown, from right to left, with employees working on the High Pressure Industrial Water Facility project near the Fred Haise Test Stand. The NASA Stennis leaders visited work sites on May 8 to recognize employees with NASA SHAKERS (Smart Human Actions Keep Everyone Really Safe) Awards for conducting work in a safe manner. NASA’s constant attention to safety, one of the agency’s five core values, is the cornerstone for mission success.

An image shows a new pipeline liner section being place inside the existing carrier pipe near the Fred Haise Test Stand on May 1 in the last phase of updating the original test complex industrial water system at NASA’s Stennis Space Center.

A work crew at NASA’s Stennis Space Center near Bay St. Louis, Mississippi removes RS-25 developmental engine E0525 from the Fred Haise Test Stand on April 9. Removal of the engine follows completion of the second and final 12-test series for lead engines contractor Aerojet Rocketdyne, an L3Harris Technologies company, to certify and build new RS-25 engines for NASA’s SLS (Space Launch System) rockets that will power future lunar missions, beginning with Artemis V. Through Artemis, NASA will establish the foundation for long-term scientific exploration at the Moon; land the first woman, first person of color, and first international partner astronaut on the lunar surface; and prepare for human expeditions to Mars for the benefit of all.

Leaders from NASA’s Stennis Space Center and NASA Shared Services Center visit Jackson, Mississippi, on Feb. 28-29 to share site updates with state leaders during the annual Stennis Day at the Capitol. NASA Stennis is on the front line of the next great era of human space exploration as NASA explores the secrets of the universe for the benefit of all. The south Mississippi center tests propulsion systems and engines helping power Artemis missions on the SLS (Space Launch System) rocket to deep space. Through Artemis, NASA will establish the foundation for long-term scientific exploration at the Moon, land the first woman, first person of color, and first international partner astronaut on the lunar surface, and prepare for human expeditions to Mars. Moving forward, NASA Stennis is working to accelerate the exploration and commercialization of space, innovate to benefit NASA and industry, and leverage assets to stimulate the economy and enhance national security.

Stennis Space Center; Lunar Eclipse over A-1 test stand

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

NASA Stennis representatives inspire the Artemis Generation at the Audubon Aquarium in New Orleans Feb. 7-8 with activities and displays highlighting space exploration, including NASA’s Artemis missions to the Moon.

NASA Stennis summer intern Logan Blesse, left, shares about his work on future lunar autonomous robotic development during an Aug. 7 event hosted by the Office of STEM Engagement. Blesse, a student at The University of Southern Mississippi in Hattiesburg, worked with the NASA Stennis Autonomous Systems Laboratory. The poster symposium highlighted research topics, including propulsion test operations, lunar robotics, autonomous systems, STEM education, and more. NASA’s Office of STEM Engagement paid internships allow high school and college-level students to contribute to the agency’s mission to advance science, technology, aeronautics, and space exploration.

These images show how teams rolled out, or moved, the completed core stage for NASA’s Space Launch System rocket from NASA’s Michoud Assembly Facility in New Orleans. Crews moved the flight hardware for the first Artemis mission to NASA’s Pegasus barge on Jan. 8 in preparation for the core stage Green Run test series at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. Pegasus, which was modified to ferry SLS rocket hardware, will transport the core stage from Michoud to Stennis for the comprehensive core stage Green Run test series. Once at Stennis, the Artemis rocket stage will be loaded into the B-2 Test Stand for the core stage Green Run test series. The comprehensive test campaign will progressively bring the entire core stage, including its avionics and engines, to life for the first time to verify the stage is fit for flight ahead of the launch of Artemis I. Assembly and integration of the core stage and its four RS-25 engines has been a collaborative, multistep process for NASA and its partners Boeing, the core stage lead contractor, and Aerojet Rocketdyne, the RS-25 engines lead contractor. Together with four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit and Orion, is part of NASA’s backbone for deep space exploration and the Artemis lunar program.

NASA employees plant an Artemis Moon Tree at NASA’s Stennis Space Center on Oct. 29 to celebrate NASA’s successful Artemis I mission as the agency prepares for a return around the Moon with astronauts on Artemis II.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Teams at NASA’s Stennis Space Center complete a safe lift and install of an interstage simulator unit needed for future testing of NASA’s exploration upper stage (EUS) in the B-2 position of the Thad Cochran Test Stand. The lift and install, completed over a two-week period that began Oct. 10, marks a milestone for testing the new SLS (Space Launch System) rocket stage that will fly on future Artemis missions to the Moon and beyond. The EUS will undergo a series of Green Run tests of its integrated systems prior to its first flight. During testing, the interstage simulator component will function like the SLS interstage section that helps protect the upper stage during Artemis launches.

Heide Fulton, U.S. Ambassador to the Oriental Republic of Uruguay, visits NASA Stennis on Oct. 8 to meet with site leadership and tour test complex facilities. During her visit, Fulton met with NASA Stennis Director John Bailey and other leaders of the center and the NASA Shared Services Center located onsite. She also toured the rocket propulsion test complex, visiting the B-2 side of the Thad Cochran Test Stand, where she was briefed by B-2 Stand Director Ryan Roberts about NASA Stennis testing for the SLS (Space Launch System) rocket and NASA’s Artemis missions to the Moon and beyond. Uruguay is one of 45 nations who have signed the Artemis Accords, which establish a practical set of principles to guide space exploration cooperation among nations. The country became the 36th nation to sign the Artemis Accords during a Washington, D.C. ceremony in February. Ambassador Fulton was joined on the visit by Cmdr. Brendan Rok, chief of the U.S. Navy Office of Defense Cooperation at the U.S. Embassy in Montevideo, Uruguay; and Leah Thorstenson, foreign policy advisor with the U.S. Marines Corps. Forces South.

NASA Stennis employees visit booths with safety and health information in the Roy S. Estess Building during the annual Safety and Health Day at NASA’s Stennis Space Center on Sept. 26. The yearly event is a reminder to the NASA Stennis workforce about the importance of a safe work environment and provided the opportunity for a health screening.

NASA Stennis Director John Bailey hosts a Java with John session on Dec. 10 with employees representing the Office of the Chief Financial Officer, Office of STEM Engagement, Office of Diversity and Equal Opportunity, Office of the Chief Human Capital Officer, and the center’s Autonomous Systems Laboratory team. Java with John is an employee-led discussion in a casual environment aimed at fostering a culture in which employees are welcome to share what matters most to them at work.

In this March 2022 photo, crews use a shoring system to hold back soil as they install new 75-inch piping leading from the NASA Stennis High Pressure Industrial Water Facility to the valve vault pit serving the Fred Haise Test Stand.

NASA’s Stennis Space Center inspired the Artemis Generation during the 2024 Take Our Children to Work Day on June 27. Participants are shown in the StenniSphere auditorium following a site tour and full day of hands-on activities to promote interest in STEM (science, technology, engineering, and mathematics) and the variety of work conducted at NASA Stennis. NASA is returning to the Moon through the Artemis campaign for scientific discovery, economic benefits, and inspiration for a new generation of explorers.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Bridget Moody stands at NASA’s Stennis Space Center where she is the technical lead for the NASA Stennis Environmental and Health Services Office. Along with supporting the NASA mission at NASA Stennis, Moody supports commercial companies by helping them determine environmental requirements and obtain required permits.

Portrait; Mary Horne, a NASA reimbursable accountant at Stennis Space Center, performs analysis and budgeting funds for SSC tenants and commercial customers. This photo was taken as part of a monthy feature called “Faces of Stennis.”

Nyla Trumbach, a NASA lead mechanical engineer, broke barriers as the first female to conduct a J-2X powerpack engine test at Stennis Space Center. She currently works on testing of the RS-25 rocket engine, shown installed on the A-1 Test Stand at SSC.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Kim Johnson supports NASA’s mission as a contracting officer at NASA’s Stennis Space Center near Bay St. Louis, Mississippi.

NASA conducts a full-duration RS-25 hot fire Feb. 23 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, continuing a key test series for future Artemis flights of NASA’s SLS (Space Launch System) rocket. During the seventh test of the 12-test series, operators fired the certification engine for 550 seconds and up to a 113% power level. The hot fire followed installation of a second production engine nozzle that will provide additional performance data on the upgraded unit. The test series is the second, and final, series to certify restart production of the upgraded engines by lead contractor Aerojet Rocketdyne, an L3Harris Technologies company. New engines will help power NASA’s SLS rocket on Artemis missions to the Moon and beyond, beginning with Artemis V. NASA and Aerojet Rocketdyne modified 16 former space shuttle engines for use on Artemis missions I through IV. NASA completed an initial 12-test certification series with the upgraded components in June 2023. Four RS-25 engines fire simultaneously to help launch each SLS rocket, producing up to 2 million pounds of combined thrust.

Teams at NASA’s Stennis Space Center deliver, lift, and install the first new production RS-25 engine on the Fred Haise Test Stand on Feb. 18.

A pair of umbilical support structures needed for future testing of NASA’s exploration upper stage (EUS) were installed in the B-2 position of the Thad Cochran Test Stand on Oct. 30-31 at NASA’s Stennis Space Center. The support structures arrived from NASA’s Michoud Assembly Facility in New Orleans via the unique NASA Stennis seven-and-a-half-mile canal system in 2023. Since then, crews have prepared the structures that will align with the EUS unit for installation. In addition to helping secure the unit in place during hot fire testing, the umbilical support structures are where the command, control, and data electrical connections are mated to connect the ground systems to the vehicle systems, as well as most the commodity connections such as liquid hydrogen, liquid oxygen, hydrogen vent, helium bottle fill pressure, and purges. Prior to its initial flight, the EUS unit will undergo a series of so-called Green Run tests at NASA Stennis to ensure all systems are ready to go. The test series will culminate with a hot fire of the stage’s four RL10 engines, made by Aerojet Rocketdyne, an L3Harris Technologies company and lead SLS engines contractor. The new upper stage will enable NASA to carry larger payloads on Artemis missions to the Moon and beyond.

NASA representatives are shown at the 30th annual ESSENCE Fest in New Orleans on July 5. Pictured left to right: Aya Collins, director of engagement; Michelle Bascoe, management analyst; Lakiesha Hawkins, assistant deputy associate administrator for the Moon to Mars Program Office; Zudayyah Taylor-Dunn, chief knowledge officer for Space Operations Mission Directorate; and Miyoshi Collins, program specialist.

NASA Stennis Director John Bailey hosted a Java with John session with Office of Procurement employees on Oct. 15. Java with John is an employee-led discussion in a casual environment aimed at fostering a culture in which employees are welcome to share what matters most to them at work.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Cookbook author and culinary content creator Caroline Davis, popularly known as Mississippi Kween, and her family enjoy touring facilities and learning about NASA Stennis and its frontline work during a site visit Dec. 18. Davis, husband Joe, and children Zeke and Zoey, met with NASA Stennis leadership before touring the L3Harris (formerly Aerojet Rocketdyne) Engine Assembly Facility, Thad Cochran Test Stand, Autonomous Systems Laboratory, and the NASA Stennis rocket engine garden. The tour highlighted the NASA Stennis story and how the south Mississippi NASA center has the ingredients for a recipe that accelerates the exploration and commercialization of space, innovates to benefit NASA and industry, and leverages assets to stimulate the economy.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

An audience member takes a photo as NASA representatives participate in a Take Up Space (Literally) panel conversation during the 30th annual ESSENCE Fest in New Orleans on July 5.

A pair of umbilical support structures needed for future testing of NASA’s exploration upper stage (EUS) were installed in the B-2 position of the Thad Cochran Test Stand on Oct. 30-31 at NASA’s Stennis Space Center. The support structures arrived from NASA’s Michoud Assembly Facility in New Orleans via the unique NASA Stennis seven-and-a-half-mile canal system in 2023. Since then, crews have prepared the structures that will align with the EUS unit for installation. In addition to helping secure the unit in place during hot fire testing, the umbilical support structures are where the command, control, and data electrical connections are mated to connect the ground systems to the vehicle systems, as well as most the commodity connections such as liquid hydrogen, liquid oxygen, hydrogen vent, helium bottle fill pressure, and purges. Prior to its initial flight, the EUS unit will undergo a series of so-called Green Run tests at NASA Stennis to ensure all systems are ready to go. The test series will culminate with a hot fire of the stage’s four RL10 engines, made by Aerojet Rocketdyne, an L3Harris Technologies company and lead SLS engines contractor. The new upper stage will enable NASA to carry larger payloads on Artemis missions to the Moon and beyond.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Girls United co-founder Rechelle Dennis, left, introduces NASA Assistant Deputy Associate Administrator for the Moon to Mars Program Office Lakiesha Hawkins, center, and NASA Director of Engagement Aya Collins, right, for a Take Up Space (Literally) panel conversation during the 30th annual ESSENCE Fest event in New Orleans on July 5.

Cookbook author and culinary content creator Caroline Davis, popularly known as Mississippi Kween, and her family enjoy touring facilities and learning about NASA Stennis and its frontline work during a site visit Dec. 18. Davis, husband Joe, and children Zeke and Zoey, met with NASA Stennis leadership before touring the L3Harris (formerly Aerojet Rocketdyne) Engine Assembly Facility, Thad Cochran Test Stand, Autonomous Systems Laboratory, and the NASA Stennis rocket engine garden. The tour highlighted the NASA Stennis story and how the south Mississippi NASA center has the ingredients for a recipe that accelerates the exploration and commercialization of space, innovates to benefit NASA and industry, and leverages assets to stimulate the economy.

Cookbook author and culinary content creator Caroline Davis, popularly known as Mississippi Kween, and her family enjoy touring facilities and learning about NASA Stennis and its frontline work during a site visit Dec. 18. Davis, husband Joe, and children Zeke and Zoey, met with NASA Stennis leadership before touring the L3Harris (formerly Aerojet Rocketdyne) Engine Assembly Facility, Thad Cochran Test Stand, Autonomous Systems Laboratory, and the NASA Stennis rocket engine garden. The tour highlighted the NASA Stennis story and how the south Mississippi NASA center has the ingredients for a recipe that accelerates the exploration and commercialization of space, innovates to benefit NASA and industry, and leverages assets to stimulate the economy.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

NASA Stennis Space Center Director John Bailey receives the Meritorious Senior Executive Presidential Rank Award from NASA Associate Administrator for Space Operations Kenneth Bowersox during the NASA Honor Awards ceremony on May 15 at NASA Stennis. Bailey is pictured, from left, with his wife, Lori; daughter, Isabella; and Bowersox.

Members of the Florida A&M University Program of Excellence in STEM attend a presentation June 21 during a visit to NASA’s Stennis Space Center. The NASA Office of STEM Engagement provided information on grants and student activities during the presentation about NASA Stennis and the work conducted at the unique federal city. The group also visited the Thad Cochran Test Stand and Relativity Space test complex during a site tour. The Program of Excellence in STEM summer academy aims to enhance student knowledge of opportunities in the fields of science, technology, engineering, and mathematics.

NASA Stennis representatives inspire the Artemis Generation at the Audubon Aquarium in New Orleans Feb. 7-8 with activities and displays highlighting space exploration, including NASA’s Artemis missions to the Moon.

After a series of successful tests conducted the B-2 Test Stand at Stennis Space Center, NASA’s Space Launch System (SLS) core stage was loaded on the Pegasus barge and departed the test stand in the early morning hours of April 22, 2021, beginning its journey to Kennedy Space Center.

NASA Stennis’ sitewide employees and their guests attend the annual NASA Stennis Family Day at INFINITY Science Center, the official visitor center of NASA Stennis, on Oct. 19. Attendees had the opportunity to journey through the INFINITY exhibits and enjoy additional activities provided by participating organizations of the NASA Stennis federal city.

These images show how teams rolled out, or moved, the completed core stage for NASA’s Space Launch System rocket from NASA’s Michoud Assembly Facility in New Orleans. Crews moved the flight hardware for the first Artemis mission to NASA’s Pegasus barge on Jan. 8 in preparation for the core stage Green Run test series at NASA’s Stennis Space Center near Bay St. Louis, Mississippi. Pegasus, which was modified to ferry SLS rocket hardware, will transport the core stage from Michoud to Stennis for the comprehensive core stage Green Run test series. Once at Stennis, the Artemis rocket stage will be loaded into the B-2 Test Stand for the core stage Green Run test series. The comprehensive test campaign will progressively bring the entire core stage, including its avionics and engines, to life for the first time to verify the stage is fit for flight ahead of the launch of Artemis I. Assembly and integration of the core stage and its four RS-25 engines has been a collaborative, multistep process for NASA and its partners Boeing, the core stage lead contractor, and Aerojet Rocketdyne, the RS-25 engines lead contractor. Together with four RS-25 engines, the rocket’s massive 212-foot-tall core stage — the largest stage NASA has ever built — and its twin solid rocket boosters will produce 8.8 million pounds of thrust to send NASA’s Orion spacecraft, astronauts and supplies beyond Earth’s orbit to the Moon and, ultimately, Mars. Offering more payload mass, volume capability and energy to speed missions through space, the SLS rocket, along with NASA’s Gateway in lunar orbit and Orion, is part of NASA’s backbone for deep space exploration and the Artemis lunar program.

NASA Stennis Deputy Director Christine Powell thanks all employees for attending the annual Safety and Health Day event in the StenniSphere Auditorium at NASA’s Stennis Space Center on Sept. 26. Powell noted the NASA Stennis workforce contributed to the NASA mission while holding safety – a NASA core value – as a top priority.

NASA completed a full-duration, 500-second hot fire of an RS-25 certification engine Jan. 27, marking the halfway point in a critical test series to support future SLS (Space Launch System) missions to the Moon and beyond as NASA explores the secrets of the universe for the benefit of all.

NASA completed a full-duration, 500-second hot fire of an RS-25 certification engine Jan. 27, marking the halfway point in a critical test series to support future SLS (Space Launch System) missions to the Moon and beyond as NASA explores the secrets of the universe for the benefit of all.

A group of Take Our Children Day participants watch a cryogenic demonstration led by Allen Forsman of Aerojet Rocketdyne, an L3Harris Technologies company, on June 27 at the Aerojet Rocketdyne Engine Assembly Facility at NASA Stennis.

NASA Stennis summer intern Joseph Dulog, left, shares about his work on a lunar fluid systems developmental platform during an Aug. 7 event hosted by the Office of STEM Engagement. Dulog, a student at Rowan University in Glassboro, New Jersey, worked with the NASA Stennis Autonomous Systems Laboratory. The poster symposium highlighted research topics, including propulsion test operations, lunar robotics, autonomous systems, STEM education, and more. NASA’s Office of STEM Engagement paid internships allow high school and college-level students to contribute to the agency’s mission to advance science, technology, aeronautics, and space exploration.

Crews conduct a planned flame deflector water flow system flush on the Fred Haise Test Stand at NASA’s Stennis Space Center on Oct. 22, following the recent completion of upgrades to the High Pressure Industrial Water Facility’s underground piping network. The flush, a periodic procedure to ensure system functionality and performance, involves flowing 150,000 gallons or more per minute from the High Pressure Industrial Water Facility to the stand. It also continues stand preparations for testing RS-25 flight engines for use on future Artemis missions to the Moon and beyond.

NASA Stennis representatives inspire the Artemis Generation at the Audubon Aquarium in New Orleans Feb. 7-8 with activities and displays highlighting space exploration, including NASA’s Artemis missions to the Moon.

Interns at NASA Stennis watch The Color of Space documentary featuring NASA astronaut Victor Glover during National Intern Day activities onsite July 25. Glover will be the first Black astronaut to travel around the Moon for NASA’s Artemis II mission.

NASA Stennis Director John Bailey, left, welcomes Richard French, Rocket Lab USA, Inc. vice president of business development and strategy of space systems, for a tour of NASA Stennis on Feb. 26. In 2022, NASA and Rocket Lab reached an agreement for the aerospace company to locate its engine test complex at NASA Stennis. The initial 10-year agreement between NASA and Rocket Lab includes an option to extend an additional 10 years. The Archimedes Test Complex includes 24 acres surrounding the site’s A-3 Test Stand. Archimedes is Rocket Lab’s liquid oxygen and liquid methane rocket engine to power its medium-lift Neutron rocket. The company successfully completed the first hot fire of the new Archimedes rocket engine at NASA Stennis in August 2024.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

Teams at NASA’s Stennis Space Center deliver, lift, and install the first new production RS-25 engine on the Fred Haise Test Stand on Feb. 18.

NASA conducts a hot fire test March 18, 2021, of the core stage for the agency’s Space Launch System rocket on the B-2 Test Stand at Stennis Space Center near Bay St. Louis, Mississippi. The hot fire test of the stage’s four RS-25 engines generated a combined 1.6 million pounds of thrust, just as will occur during an actual launch. The hot fire is the final test of the Green Run test series, which represents a comprehensive assessment of the core stage and its integrated systems prior to its launch on the Artemis I mission to the Moon.

NASA conducts a full-duration RS-25 hot fire Feb. 23 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, continuing a key test series for future Artemis flights of NASA’s SLS (Space Launch System) rocket. During the seventh test of the 12-test series, operators fired the certification engine for 550 seconds and up to a 113% power level. The hot fire followed installation of a second production engine nozzle that will provide additional performance data on the upgraded unit. The test series is the second, and final, series to certify restart production of the upgraded engines by lead contractor Aerojet Rocketdyne, an L3Harris Technologies company. New engines will help power NASA’s SLS rocket on Artemis missions to the Moon and beyond, beginning with Artemis V. NASA and Aerojet Rocketdyne modified 16 former space shuttle engines for use on Artemis missions I through IV. NASA completed an initial 12-test certification series with the upgraded components in June 2023. Four RS-25 engines fire simultaneously to help launch each SLS rocket, producing up to 2 million pounds of combined thrust.

Leaders from NASA’s Stennis Space Center and NASA Shared Services Center visit Jackson, Mississippi, on Feb. 28-29 to share site updates with state leaders during the annual Stennis Day at the Capitol. NASA Stennis is on the front line of the next great era of human space exploration as NASA explores the secrets of the universe for the benefit of all. The south Mississippi center tests propulsion systems and engines helping power Artemis missions on the SLS (Space Launch System) rocket to deep space. Through Artemis, NASA will establish the foundation for long-term scientific exploration at the Moon, land the first woman, first person of color, and first international partner astronaut on the lunar surface, and prepare for human expeditions to Mars. Moving forward, NASA Stennis is working to accelerate the exploration and commercialization of space, innovate to benefit NASA and industry, and leverage assets to stimulate the economy and enhance national security.

Crews bring RS-25 developmental engine E0525 to the Fred Haise Test Stand at NASA’s Stennis Space Center on Aug. 30 for the second and final certification test series.

Fans at the 51st Annual Bayou Classic in New Orleans snap a photo with cardboard images of NASA’s Artemis II crew on Nov. 30.

An Audubon Aquarium visitor in New Orleans experiences a virtual reality visit to the International Space Station as part of a NASA exhibit on July 5. NASA hosted an information/interactive exhibit at the aquarium in conjunction with NASA activities at the 30th annual ESSENCE Fest in New Orleans during the Fourth of July weekend.

Leaders from NASA’s Stennis Space Center and NASA Shared Services Center visit Jackson, Mississippi, on Feb. 28-29 to share site updates with state leaders during the annual Stennis Day at the Capitol. NASA Stennis is on the front line of the next great era of human space exploration as NASA explores the secrets of the universe for the benefit of all. The south Mississippi center tests propulsion systems and engines helping power Artemis missions on the SLS (Space Launch System) rocket to deep space. Through Artemis, NASA will establish the foundation for long-term scientific exploration at the Moon, land the first woman, first person of color, and first international partner astronaut on the lunar surface, and prepare for human expeditions to Mars. Moving forward, NASA Stennis is working to accelerate the exploration and commercialization of space, innovate to benefit NASA and industry, and leverage assets to stimulate the economy and enhance national security.

NASA Stennis representatives inspire the Artemis Generation at the Audubon Aquarium in New Orleans Feb. 7-8 with activities and displays highlighting space exploration, including NASA’s Artemis missions to the Moon.

The Pearl River County Leadership Class stands in front of the Thad Cochran Test Stand during a NASA Stennis site tour on Jan. 18. The group learned about the RS-25 engine certification test series underway for future flights of NASA’s SLS (Space Launch System) rocket and preparations for Green Run testing at the Thad Cochran Test Stand (B-2) for NASA’s Exploration Upper Stage (EUS) in support of the Artemis program. EUS is expected to fly on the Artemis IV mission. Prior to that time, it will undergo a series of integrated systems tests to demonstrate it is ready to fly. Through Artemis, NASA will send the first woman and first person of color to the Moon. The agency will use what is learned on and around the Moon to take the next giant leap – sending astronauts to Mars.

NASA conducted a full-duration RS-25 hot fire April 3 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, achieving a major milestone for future Artemis flights of NASA’s SLS (Space Launch System) rocket. It marked the final test of a 12-test series to certify production of new RS-25 engines by lead contractor Aerojet Rocketdyne, an L3Harris Technologies company, to help power NASA’s SLS rocket on Artemis missions to the Moon and beyond, beginning with Artemis V.

Leaders from NASA’s Stennis Space Center and NASA Shared Services Center visit Jackson, Mississippi, on Feb. 28-29 to share site updates with state leaders during the annual Stennis Day at the Capitol. NASA Stennis is on the front line of the next great era of human space exploration as NASA explores the secrets of the universe for the benefit of all. The south Mississippi center tests propulsion systems and engines helping power Artemis missions on the SLS (Space Launch System) rocket to deep space. Through Artemis, NASA will establish the foundation for long-term scientific exploration at the Moon, land the first woman, first person of color, and first international partner astronaut on the lunar surface, and prepare for human expeditions to Mars. Moving forward, NASA Stennis is working to accelerate the exploration and commercialization of space, innovate to benefit NASA and industry, and leverage assets to stimulate the economy and enhance national security.

Crews use a special tool to place a new pipeline liner section inside the existing carrier pipe near the Fred Haise Test Stand on May 1 in the last phase of updating the original test complex industrial water system at NASA’s Stennis Space Center.

NASA demonstrates a key capability necessary for flight of the SLS (Space Launch System) rocket during the hot fire on Nov. 29, 2023. Crews gimbal, or pivot, the RS-25 engine around a central point during the almost 11-minute (650 seconds) hot fire on the Fred Haise Test Stand at NASA’s Stennis Space Center.

Summer interns with the U.S. Naval Research Laboratory stand in front of the Thad Cochran Test Stand (B-1/B-2) on July 10. NASA Stennis crews are preparing the B-2 side of the stand for future testing of NASA’s exploration upper stage. The more powerful second stage is expected to fly on NASA’s SLS (Space Launch System) rocket for Artemis IV. The Naval Research Laboratory interns visited the stand during an afternoon tour of NASA Stennis. The Naval Research Laboratory is a tenant of the NASA Stennis federal city, where it provides advanced scientific capabilities required to bolster the nation’s position of global naval leadership.

Teams at NASA’s Stennis Space Center complete a safe lift and install of an interstage simulator unit needed for future testing of NASA’s exploration upper stage (EUS) in the B-2 position of the Thad Cochran Test Stand. The lift and install, completed over a two-week period that began Oct. 10, marks a milestone for testing the new SLS (Space Launch System) rocket stage that will fly on future Artemis missions to the Moon and beyond. The EUS will undergo a series of Green Run tests of its integrated systems prior to its first flight. During testing, the interstage simulator component will function like the SLS interstage section that helps protect the upper stage during Artemis launches.

NASA’s Stennis Space Center near Bay St. Louis, Mississippi, is often associated with hot fires coming from the center’s long history of hot fire testing engines and stages that have helped power the nation’s space dreams since the first humans stepped foot on the Moon. However, NASA Stennis turned into a Winter Wonderland Jan. 21 when America’s largest rocket propulsion test site received a historic amount of snow across the unique federal city. Hancock County, where NASA Stennis is located, received five to seven inches of snow, according to the National Weather Service. It marked the most snow the county has received in 61 years. The December 31, 1963, snowfall holds the record at 10 inches of snow for Bay St. Louis, Mississippi.

NASA Stennis representatives inspire the Artemis Generation at the Audubon Aquarium in New Orleans Feb. 7-8 with activities and displays highlighting space exploration, including NASA’s Artemis missions to the Moon.

NASA conducted a full-duration RS-25 hot fire April 3 on the Fred Haise Test Stand at NASA’s Stennis Space Center near Bay St. Louis, Mississippi, achieving a major milestone for future Artemis flights of NASA’s SLS (Space Launch System) rocket. It marked the final test of a 12-test series to certify production of new RS-25 engines by lead contractor Aerojet Rocketdyne, an L3Harris Technologies company, to help power NASA’s SLS rocket on Artemis missions to the Moon and beyond, beginning with Artemis V.

NASA’s Stennis Space Center near Bay St. Louis, Mississippi, is often associated with hot fires coming from the center’s long history of hot fire testing engines and stages that have helped power the nation’s space dreams since the first humans stepped foot on the Moon. However, NASA Stennis turned into a Winter Wonderland Jan. 21 when America’s largest rocket propulsion test site received a historic amount of snow across the unique federal city. Hancock County, where NASA Stennis is located, received five to seven inches of snow, according to the National Weather Service. It marked the most snow the county has received in 61 years. The December 31, 1963, snowfall holds the record at 10 inches of snow for Bay St. Louis, Mississippi.