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NASA Astronaut Chris Williams Closes Out Space Station Mission

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NASA Astronaut Chris Williams Closes Out Space Station Mission

After eight months aboard the International Space Station for his first mission, NASA astronaut Chris Williams is preparing to return to Earth. During his assignment, Williams contributed to research for new cancer treatments, advanced the production of materials to improve computers and electronics, ventured into the vacuum of space to complete two spacewalks, and much more. Williams’ work aboard the space station helped to improve life on Earth and prepare for future missions to the Moon and Mars.

Here are some of the research highlights from his mission:

Cancer-fighting constructs

NASA astronaut Chris Williams and ESA (European Space Agency) astronaut Sophie Adenot work together at the International Space Station's Life Sciences Glovebox. Sophie reaches into the illuminated glovebox while Chris floats beside her, smiling toward the camera. Blue cables, scientific equipment, and white station walls surround the workstation.
NASA

NASA astronaut Chris Williams and ESA (European Space Agency) astronaut Sophie Adenot work to process DNA-inspired materials that could advance new cancer treatments for people on Earth. In space, these rod-shaped materials form more evenly and consistently, which may improve their performance and readiness for treatments on Earth. While there have been major advancements in cancer therapies, many treatments can affect the whole body and cause side effects without fully treating solid tumors. This research aims to enable targeted cancer therapies that reach deep into tumors, stay in the body longer, and release medicine in a more controlled way.

Learn more about DNA Nano Therapeutics-3.

Superior semiconductors

NASA astronaut Chris Williams smiles while reaching into the Microgravity Science Glovebox. The inside of the rectangular workspace is illuminated by white light. There is a plastic bag floating inside the upper left side of the glovebox, and Chris holds a small black and silver object in his hands.
NASA

NASA astronaut Chris Williams conducts research to grow semiconductor crystals in space. In microgravity, researchers can grow more crystals of the desired size than can be produced on Earth. Previous research shows that space-grown crystals can offer increased performance to help advance technologies like high-performance computers, artificial intelligence, and medical devices. This research lays the groundwork for commercial semiconductor manufacturing in space and advances the semiconductor industry.

Learn more about In-Space Production of Semimetal-Semiconductor Composite Bulk Crystals in Microgravity (SUBSA-InSPA-SSCug).

Eyeing Earth

NASA astronaut Chris Williams gazes out of a trapezoid-shaped window at a glowing red aurora above the Earth. The curvature of the Earth is visible through a bright green curve. It is dark aboard the International Space Station in the photo, and the glow from the aurora softly illuminates Williams' face.
Roscosmos

NASA astronaut Chris Williams looks out of a cupola window at a red aurora glowing above the Earth. Since the 1960s, astronauts have photographed Earth from space to help scientists monitor the planet’s changing landscapes, natural disasters, and other features over time. Along the way, astronauts also have captured images of celestial objects such as comets, auroras, and the Milky Way.

Sub-zero medical samples

NASA astronaut Chris Williams inserts a cryogenic storage unit into the space station's science freezer. The wedge-shaped unit resembles a slice of pie, and Williams wears thick insulated gloves to protect his hands from the extremely cold temperatures. There are many blue cables beneath him.
NASA

NASA astronaut Chris Williams works with a special freezer aboard the International Space Station that keeps research samples at ultra-cold temperatures until they can return to Earth. Throughout each mission, astronauts collect biological samples like blood and urine to help scientists understand how long-duration spaceflight affects the human body. Observing crew members during their space missions and studying these frozen samples back on Earth helps NASA protect astronaut health during future missions to the Moon, Mars, and beyond.

Learn more about the Minus Eighty-Degree Laboratory Freezer for the International Space Station (MELFI) and Human Research.

Capturing cargo

NASA astronauts Jack Hathaway (left) and Chris Williams (right) look through a circular window in the International Space Station's cupola as Northrop Grumman’s Cygnus XL spacecraft approaches. The spacecraft is a silver cylinder with two hexagonal solar arrays extending from either side of the top end of the cylinder. Behind the spacecraft, white clouds cover the Earth.
NASA

NASA astronauts Jack Hathaway and Chris Williams watch from the cupola windows as Northrop Grumman’s Cygnus XL cargo spacecraft approaches the International Space Station. The two played key roles in the capture of the spacecraft, which delivered approximately 11,000 pounds of supplies, including fresh food, life support equipment, and scientific research as part of NASA’s Northrop Grumman Commercial Resupply Services 24 mission. Cargo missions help keep the space station operating and provide astronauts with the supplies they need to live, work, and conduct research in orbit.

Blocking biofilms

NASA astronaut Chris Williams smiles at the camera as he reaches into the clear, sealed Life Sciences Glovebox and holds a transparent orange package. The illuminated workspace contains plastic bags, scientific equipment, and a pair of scissors.
NASA

NASA astronaut Chris Williams works on an investigation that tests the use of ultraviolet light to help prevent the formation of microbial colonies, called biofilms. Biofilms can clog and contaminate water systems, damage equipment, and pose health risks to astronauts. This research aims to keep surfaces cleaner and safeguard systems during long-duration space missions. Using UV light for sanitation also could reduce the need for chemical disinfectants in space, decreasing the risk of chemical exposure and eliminating difficulties in transporting or storing supplies.

Learn more about Germicidal Ultraviolet Light Biofilm Inhibition (GULBI).

Strengthening solar power

NASA astronaut Chris Williams is seen smiling through his spacesuit helmet outside of the International Space Station. Williams is anchored next to several white structures and surrounded by space station equipment. Behind him there is a SpaceX Dragon spacecraft docked to the space station. Earth's blue curvature and scattered white clouds stretch across the background.
NASA

NASA astronaut Chris Williams ventured outside the International Space Station for two spacewalks during his mission. In June, he helped make repairs to Canadarm2, a robotic arm that captures cargo spacecraft and deploys external research. In March, Williams prepared the orbiting laboratory for new solar arrays to be added to the station in a future spacewalk. Once installed, the final set of International Space Station Roll Out Solar Arrays (IROSA) will complete the full suite of additional solar power, increasing the station’s power generation by about 30% and enhancing support for scientific research and daily operations. The same solar array technology also powered NASA’s Double Asteroid Redirection Test and could support future missions to the Moon and Mars.

Learn more about the space station’s IROSAs.

Microgravity medicine

NASA astronaut Chris Williams holds a small, rectangular hard drive as he works to swap computer components for a protein crystal growth investigation. A tablet is secured to one of his legs, while two plastic bags are attached to the other. Bundles of cables float next to him and a circular hatch is visible in the background.
NASA

NASA astronaut Chris Williams works with hardware to support the development of new cancer and disease treatments by studying the growth of protein crystals for pharmaceuticals. In space, protein crystals form higher-quality structures than they do on Earth, allowing researchers to better understand how to target and treat disease. Here, Williams works with a project that aims to develop a new formula for a cancer treatment that could be taken orally. Growing protein crystals in space paves the way for more commercial companies to create new therapies that could improve patient outcomes on Earth.

Learn more about the Pharmaceutical In-space Laboratory (ADSEP-PIL-10).

Robotic refinement

A video shows NASA astronaut Chris Williams working on hardware inside a rectangular space. Facing away from the camera, Williams makes small adjustments to the experiment, which consists of two white robotic arms. There are many white cables on the inside of the compartment.
NASA

NASA astronaut Chris Williams works with equipment that tests the performance of small robotic arms in space. Some experiments and operations require very precise movements, where tiny errors can significantly impact results. Understanding how microgravity affects delicate robotic operations helps researchers improve designs for future automated systems that can perform operations while astronauts focus on the most critical tasks.

Learn more about the Test facility for lab-aUtomation System in Kibo (TUSK).

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Last Updated
Jul 23, 2026

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NASA astronaut Chris Williams is set to return to Earth after an eight-month mission aboard the International Space Station. During his assignment, Williams ...

NASA Sets Briefings for SpaceX Crew-13 Mission to Space Station

The SpaceX Crew-13 members are pictured in their pressure suits seated inside a mockup Dragon spacecraft during a preflight training session at the company's headquarters in Hawthorne, California. From left are, Roscosmos Sergey Teteryatnikov, NASA astronauts Luke Delaney and Jessica Watkins, and CSA (Canadian Space Agency) astronaut Joshua Kutryk.
NASA’s SpaceX Crew-13 members are pictured in their pressure suits seated inside a mockup Dragon spacecraft during a preflight training session at the company’s headquarters in Hawthorne, California. From left are Roscosmos Sergey Teteryatnikov, NASA astronauts Luke Delaney and Jessica Watkins, and CSA (Canadian Space Agency) astronaut Joshua Kutryk.
Credit: SpaceX

NASA and its partners will discuss the upcoming crew rotation mission to the International Space Station during a pair of news conferences on Monday, Aug. 3, from the agency’s Johnson Space Center in Houston.

Mission leadership will provide an overview of NASA’s SpaceX Crew‑13 mission at 12 p.m. EDT. Next, crew members will discuss their training and mission preparations at 2 p.m. This is Crew-13’s final media availability prior to traveling to the agency’s Kennedy Space Center in Florida for launch.

NASA will stream these events live. Learn where to watch online:

https://www.nasa.gov/live

The Crew-13 mission will carry NASA astronauts Jessica Watkins and Luke Delaney, CSA (Canadian Space Agency) astronaut Joshua Kutryk, and Roscosmos cosmonaut Sergey Teteryatnikov to the orbiting laboratory. The crew will launch aboard a SpaceX Dragon spacecraft on the company’s Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida no earlier than mid-September.

International media attending in person must email the NASA Johnson newsroom at jsccommu@mail.nasa.gov by 5 p.m., Tuesday, July 21. United States-based media attending in person must respond by 5 p.m., Thursday, July 30. Media joining virtually must respond by 10 a.m. the day of the event. NASA’s media accreditation policy is available online.

Briefing participants are as follows (all times Eastern and subject to change based on real-time operations):

12 p.m.: Mission Overview News Conference

  • Joel Montalbano, deputy associate administrator, Human Spaceflight Mission Directorate, NASA Headquarters
  • Dana Weigel, manager, Low Earth Orbit Program, NASA Johnson
  • Mathieu Caron, director, Astronauts, Life Sciences, and Space Medicine, CSA
  • Julianna Scheiman, director, NASA Science and Dragon Programs, SpaceX

2 p.m.: Crew-13 News Conference

  • Jessica Watkins, commander, NASA
  • Luke Delaney, pilot, NASA
  • Joshua Kutryk, mission specialist, CSA
  • Sergey Teteryatnikov, mission specialist, Roscosmos

Following the news conference, crew members will be available for limited media interviews. All interview requests must be submitted by 5 p.m. on July 30, to the NASA Johnson newsroom at: jsccommu@mail.nasa.gov.

This will be the second flight to the space station for Watkins, who was selected as a NASA astronaut in 2017. Watkins grew up in Lafayette, Colorado, and earned an undergraduate degree in geological and environmental sciences from Stanford University, as well as a doctorate in geology from the University of California, Los Angeles. As a geologist, she studied the Martian surface and was a member of the Curiosity rover science team at NASA’s Jet Propulsion Laboratory in Southern California. Watkins first launched to the space station as a crew member aboard NASA’s SpaceX Crew-4 mission, spending a total of 170 days in space across space station Expeditions 67/68 in 2022. She will be the first NASA astronaut to launch aboard a SpaceX Dragon spacecraft twice.

Selected as a NASA astronaut in 2021, Delaney earned a bachelor’s degree in mechanical engineering at the University of North Florida and a master’s degree in aerospace engineering at the Naval Postgraduate School. The Florida native is a distinguished naval aviator who participated in exercises throughout the Asia Pacific region and conducted missions in support of Operation Enduring Freedom. As a test pilot, Delaney evaluated developmental aircraft systems and served as a test pilot instructor. He also worked as a research pilot at NASA’s Langley Research Center in Hampton, Virginia, where he supported airborne science missions. This is the first spaceflight for Delaney.

The Crew-13 mission also is the first spaceflight for Kutryk. Prior to his selection as a CSA astronaut in 2017, he served as a CF-18 fighter pilot, flying missions in support of Canada’s NATO, U.N., and North American Aerospace Defense Command commitments. A native of Fort Saskatchewan, Alberta, Kutryk also worked as an experimental and operational test pilot at the Aerospace Engineering Test Establishment in Cold Lake, Alberta. Kutryk received a bachelor’s degree in mechanical engineering from the Royal Military College of Canada in Kingston, Ontario, and he is a distinguished graduate of the United States Air Force Test Pilot school in Edwards, California. He has master’s degrees in space studies, flight test engineering, and defense studies.

This mission will be Teteryatnikov’s first trip to the orbiting laboratory. He graduated from the Naval Academy, St. Petersburg, Russia, in 2011 as an engineer specializing in ship power plant operations. Before his selection as a test cosmonaut, Teteryatnikov served in various naval engineering roles, including undersea vessels and specialized engine room operations. He was selected for the Gagarin Research and Test Cosmonaut Training Center Cosmonaut Corps in 2021 and has served as a test cosmonaut since 2023.

For more information about the mission, visit:

https://www.nasa.gov/mission/nasas-spacex-crew-13

-end-

Joshua Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Leah Cheshier / Anna Schneider
Johnson Space Center, Houston
281-483-5111
leah.d.cheshier@nasa.gov / anna.c.schneider@nasa.gov

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Last Updated
Jul 20, 2026
Editor
Jessica Taveau

NASA Astronaut Anil Menon, Crewmates Arrive at Space Station

The Soyuz rocket launches to the International Space Station with NASA astronaut Anil Menon and Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina onboard, Tuesday, July 14, 2026, at the Baikonur Cosmodrome in Kazakhstan.
Credit: NASA/Bill Ingalls

NASA astronaut Anil Menon, along with Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina, arrived safely at the International Space Station Tuesday, bringing the orbiting laboratory’s crew to 10 for about the next two weeks.

The trio launched aboard the Soyuz MS-29 spacecraft at 10:47 a.m. EDT (7:47 p.m. local time) from the Baikonur Cosmodrome in Kazakhstan. After a three-hour, two-orbit journey, the spacecraft docked at 1:52 p.m. with the station’s Prichal module.

Following hatch opening, expected about 4 p.m., the new arrivals will be welcomed by the space station Expedition 74 crew: NASA astronauts Jessica Meir, Jack Hathaway, and Chris Williams; ESA (European Space Agency) astronaut Sophie Adenot; and Roscosmos cosmonauts Sergey Kud-Sverchkov, Sergei Mikaev, and Andrey Fedyaev.

NASA’s live coverage of hatch opening begins at 3:30 p.m. on NASA+, Amazon Prime, and YouTube. Learn how to watch NASA content through a variety of online platforms, including social media.

During his stay aboard the station, Menon will conduct scientific research and technology demonstrations aimed at advancing human space exploration and benefiting life on Earth. He will continue research to refine in-space production of semiconductor crystals to enable the large-scale manufacturing of components needed for high-performance computers, artificial intelligence, and improved medical devices. Menon also will perform ultrasound using augmented reality and artificial intelligence methods that could eliminate the need for medical support from Earth on future space missions. He will be a test subject helping researchers understand how blood flow is affected in space to protect future astronauts. He also will test bioprinting vascular constructs in microgravity to improve understanding of the aging process to advance therapeutic developments.

Expedition 75 is scheduled to begin on Sunday, July 26, following the departure of Williams, Kud-Sverchkov, and Mikaev, as they conclude an eight-month science mission aboard the orbital outpost.

Watch the change of command ceremony at 9:40 a.m. on Saturday, July 25, as station command transfers from Kud-Sverchkov to Meir, live on NASA+.

Learn more about International Space Station, crews, research, and operations at:

https://www.nasa.gov/station

-end-

Joshua Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov

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Last Updated
Jul 14, 2026
Editor
Jessica Taveau

NASA Sets Coverage for Astronaut Anil Menon Launch to Space Station

NASA astronaut Anil Menon and Roscosmos cosmonauts Pyotr Dubrov and Anna Kikina, Soyuz MS-29 prime crew members, pose for a portrait at the Gagarin Cosmonaut Training Center in Russia. 
Credit: GCTC

NASA astronaut Anil Menon will launch aboard the Roscosmos Soyuz MS-29 spacecraft to the International Space Station on Tuesday, July 14, accompanied by cosmonauts Pyotr Dubrov and Anna Kikina, where they will join the Expedition 74 crew advancing scientific research.

Menon, Dubrov, and Kikina will lift off at 10:47 a.m. EDT (7:47 p.m. Baikonur time) from the Baikonur Cosmodrome in Kazakhstan. Live launch and docking coverage is available on NASA+, Amazon Prime, and the agency’s YouTube channel. Learn how to watch NASA content through a variety of online platforms, including social media.

After a two-orbit, three-hour trip to the station, the spacecraft will automatically dock at 1:56 p.m. to the Prichal module. Shortly afterward, hatches will open between the Soyuz and the orbiting laboratory.

Once aboard, the trio will join NASA astronauts Jessica Meir, Jack Hathaway, and Chris Williams, ESA (European Space Agency) astronaut Sophie Adenot, and Roscosmos cosmonauts Sergey Kud-Sverchkov, Sergei Mikaev, and Andrey Fedyaev.

NASA’s coverage schedule is as follows (all times Eastern and subject to change based on real-time operations):

Tuesday, July 14

9:45 a.m. – Launch coverage begins on NASA+, Amazon Prime, and YouTube.

10:47 a.m. – Launch

1:10 p.m. – Rendezvous and docking coverage begins on NASA+, Amazon Prime, and YouTube.

1:56 p.m. – Docking

3:30 p.m. – Hatch opening and welcome coverage begins on NASA+, Amazon Prime, and YouTube.

3:55 p.m. – Hatch opening

Menon, Dubrov, and Kikina will spend about eight months aboard the orbital complex as International Space Station Expedition 74/75 crew members before returning to Earth in April 2027. This will be Menon’s first spaceflight and the second for both Dubrov and Kikina.

During his stay on the station, Menon will conduct scientific research and technology demonstrations aimed at advancing human space exploration and benefiting life on Earth. He will continue research to refine in-space production of semiconductor crystals to enable the large-scale manufacturing of components needed for high-performance computers, artificial intelligence, and improved medical devices. Menon also will perform ultrasound using augmented reality and artificial intelligence methods that could eliminate the need for medical support from Earth on future space missions. He will be a test subject helping researchers understand how blood flow is affected in space to protect future astronauts. He also will test bioprinting vascular constructs in microgravity to improve understanding of the aging process to advance therapeutic developments.   

For more than 25 years, people have lived and worked continuously aboard the International Space Station, advancing scientific knowledge and making research breakthroughs not possible on Earth. The space station helps NASA understand and overcome the challenges of human spaceflight, expand commercial opportunities in low Earth orbit, and build on the foundation for long-duration missions to the Moon, as part of the Artemis program, and to Mars.

To learn more about International Space Station research, operations, and its crews, visit:

www.nasa.gov/station

-end-

Joshua Finch / Jimi Russell
Headquarters, Washington
202-358-1100
joshua.a.finch@nasa.gov / james.j.russell@nasa.gov

Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov

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Last Updated
Jul 09, 2026
Editor
Jessica Taveau
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