From the International Space Station’s unique position 250 miles above Earth, the Sun is a vital source of energy. Solar power supports the station’s life support systems, daily activities, and hundreds of research investigations that improve life on Earth and prepare humans for deep space exploration. Over the past five years, NASA augmented the station’s power generation and distribution capability with next-generation International Space Station Roll Out Solar Arrays (IROSAs).

In 2017, a technology demonstration conducted aboard the space station tested the effectiveness of the arrays. The lightweight, compact design launches as a cylinder and unfurls like a yoga mat after installation. This advanced design reduces mass and volume at launch and uses an autonomous, self-deploying system that minimizes risks during rollout.

The IROSAs were designed, manufactured, and tested by Redwire under a contract with Boeing and are about half the size of the station’s legacy arrays. Despite being smaller, the arrays are capable of producing about 28 kilowatts of additional power.

Six IROSAs were installed outside of the space station between 2021 and 2023. In 2023, power projections prompted a request for another set of IROSAs, which launched in Dragon spacecraft’s trunk during the SpaceX 35th commercial resupply services mission to space station for NASA. Together, the eight IROSAs will increase power by more than 160kW for research and operations.

With the full upgrade in place, the space station’s revitalized power system not only supports NASA’s legacy in low Earth orbit but also helps advance technology that will extend the agency’s reach into the solar system. From planetary defense demonstrations, like the Double Asteroid Redirection Test, to future human exploration efforts, the space station is an essential testbed for the technologies needed for expeditions beyond Earth’s orbit.

From the International Space Station’s unique position 250 miles above Earth, the Sun is a vital source of energy. Solar power supports the station’s life support systems, daily activities, and hundreds of research investigations that improve life on Earth and prepare humans for deep space exploration. Over the past five years, NASA augmented the station’s power generation and distribution capability with next-generation International Space Station Roll Out Solar Arrays (IROSAs).

In 2017, a technology demonstration conducted aboard the space station tested the effectiveness of the arrays. The lightweight, compact design launches as a cylinder and unfurls like a yoga mat after installation. This advanced design reduces mass and volume at launch and uses an autonomous, self-deploying system that minimizes risks during rollout.

The IROSAs were designed, manufactured, and tested by Redwire under a contract with Boeing and are about half the size of the station’s legacy arrays. Despite being smaller, the arrays are capable of producing about 28 kilowatts of additional power.

Six IROSAs were installed outside of the space station between 2021 and 2023. In 2023, power projections prompted a request for another set of IROSAs, which launched in Dragon spacecraft’s trunk during the SpaceX 35th commercial resupply services mission to space station for NASA. Together, the eight IROSAs will increase power by more than 160kW for research and operations.

With the full upgrade in place, the space station’s revitalized power system not only supports NASA’s legacy in low Earth orbit but also helps advance technology that will extend the agency’s reach into the solar system. From planetary defense demonstrations, like the Double Asteroid Redirection Test, to future human exploration efforts, the space station is an essential testbed for the technologies needed for expeditions beyond Earth’s orbit.

From the International Space Station’s unique position 250 miles above Earth, the Sun is a vital source of energy. Solar power supports the station’s life support systems, daily activities, and hundreds of research investigations that improve life on Earth and prepare humans for deep space exploration. Over the past five years, NASA augmented the station’s power generation and distribution capability with next-generation International Space Station Roll Out Solar Arrays (IROSAs).

In 2017, a technology demonstration conducted aboard the space station tested the effectiveness of the arrays. The lightweight, compact design launches as a cylinder and unfurls like a yoga mat after installation. This advanced design reduces mass and volume at launch and uses an autonomous, self-deploying system that minimizes risks during rollout.

The IROSAs were designed, manufactured, and tested by Redwire under a contract with Boeing and are about half the size of the station’s legacy arrays. Despite being smaller, the arrays are capable of producing about 28 kilowatts of additional power.

Six IROSAs were installed outside of the space station between 2021 and 2023. In 2023, power projections prompted a request for another set of IROSAs, which launched in Dragon spacecraft’s trunk during the SpaceX 35th commercial resupply services mission to space station for NASA. Together, the eight IROSAs will increase power by more than 160kW for research and operations.

With the full upgrade in place, the space station’s revitalized power system not only supports NASA’s legacy in low Earth orbit but also helps advance technology that will extend the agency’s reach into the solar system. From planetary defense demonstrations, like the Double Asteroid Redirection Test, to future human exploration efforts, the space station is an essential testbed for the technologies needed for expeditions beyond Earth’s orbit.

NASA’s SpaceX 35th commercial resupply mission lifted off at 6:33 a.m. EDT Tuesday aboard a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida, carrying more than 6,300 pounds of supplies and hardware, bound for the International Space Station. Following its successful launch, the SpaceX Dragon spacecraft will carry new scientific experiments, cargo, and the final pair of International Space Station Roll-Out Solar Arrays to the orbiting laboratory.

Dragon is scheduled to autonomously dock at 11 a.m., Thursday, Oct. 15, to the space-facing port of the space station’s Harmony module. NASA will stream rendezvous and docking coverage beginning at 9:15 a.m., through a variety of platforms. Learn where to watch online:

https://www.nasa.gov/live

The final pair of solar arrays will complete the space station’s power system augmentation, boosting available electricity for research, operations, and the station’s safe, controlled deorbit. Astronauts will install the arrays during a series of spacewalks planned for later this fall.

Dragon also is delivering several new experiments, including hardware to manufacture artificial retinas in microgravity that could help restore vision for patients on Earth and 3D heart tissue models to advance large-scale drug testing on future space missions. Dragon also will carry materials to study how a new type of glass is formed in microgravity, and brain organoids that could uncover potential treatment targets for neurodegenerative diseases like Alzheimer’s, Parkinson’s, and multiple sclerosis.

These are just a sample of the hundreds of investigations conducted aboard the orbiting laboratory in the areas of biology and biotechnology, physical sciences, and Earth and space science. Research and technology investigations taking place aboard the space station benefit people on Earth and lay the groundwork for other agency deep space missions. As part of NASA’s Artemis program, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring the world through discovery in a new Golden Age of innovation and exploration.

The Dragon spacecraft is scheduled to remain at the space station until mid-November when it will depart and return to Earth with time-critical research and cargo, splashing down off the coast of California.

Learn more about the International Space Station, its research, and crew, 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

Steven Siceloff
Kennedy Space Center, Fla.
321-876-2468
steven.p.siceloff@nasa.gov

Sandra Jones / Joseph Zakrzewski
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov / joseph.a.zakrzewski@nasa.gov

NASA’s SpaceX 35th commercial resupply mission lifted off at 6:33 a.m. EDT Tuesday aboard a Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida, carrying more than 6,300 pounds of supplies and hardware, bound for the International Space Station. Following its successful launch, the SpaceX Dragon spacecraft will carry new scientific experiments, cargo, and the final pair of International Space Station Roll-Out Solar Arrays to the orbiting laboratory.

Dragon is scheduled to autonomously dock at 11 a.m., Thursday, Oct. 15, to the space-facing port of the space station’s Harmony module. NASA will stream rendezvous and docking coverage beginning at 9:15 a.m., through a variety of platforms. Learn where to watch online:

https://www.nasa.gov/live

The final pair of solar arrays will complete the space station’s power system augmentation, boosting available electricity for research, operations, and the station’s safe, controlled deorbit. Astronauts will install the arrays during a series of spacewalks planned for later this fall.

Dragon also is delivering several new experiments, including hardware to manufacture artificial retinas in microgravity that could help restore vision for patients on Earth and 3D heart tissue models to advance large-scale drug testing on future space missions. Dragon also will carry materials to study how a new type of glass is formed in microgravity, and brain organoids that could uncover potential treatment targets for neurodegenerative diseases like Alzheimer’s, Parkinson’s, and multiple sclerosis.

These are just a sample of the hundreds of investigations conducted aboard the orbiting laboratory in the areas of biology and biotechnology, physical sciences, and Earth and space science. Research and technology investigations taking place aboard the space station benefit people on Earth and lay the groundwork for other agency deep space missions. As part of NASA’s Artemis program, the agency will send astronauts to the Moon to prepare for future human exploration of Mars, inspiring the world through discovery in a new Golden Age of innovation and exploration.

The Dragon spacecraft is scheduled to remain at the space station until mid-November when it will depart and return to Earth with time-critical research and cargo, splashing down off the coast of California.

Learn more about the International Space Station, its research, and crew, 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

Steven Siceloff
Kennedy Space Center, Fla.
321-876-2468
steven.p.siceloff@nasa.gov

Sandra Jones / Joseph Zakrzewski
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov / joseph.a.zakrzewski@nasa.gov

NASA experiments focused on human and plant health and drug-resistant organisms will travel to the International Space Station aboard SpaceX’s 35th Commercial Resupply Services mission for the agency from Cape Canaveral Space Force Station in Florida, advancing research that benefits life on Earth and future exploration.

This research supports astronaut health during long-duration missions through four investigations from the agency’s Biological and Physical Sciences division, including 3D models of the human brain, a crop disease study, a faster way to assess astronaut health, and an analysis of antibiotic-resistant bacteria aboard the space station.

Tiny brain models, big questions

A new precision health investigation helps address a key question: What happens to the human brain in space?

The experiment sends small, lab-grown models of the human brain to the orbiting laboratory for five weeks. Researchers compare tissue models that traveled to space with identical ones kept on Earth to determine how a short spaceflight affects the human brain at the cellular level.

The effort could deepen our understanding of how the human brain responds to stress and help lay the groundwork for methods that counter risks to brain health that astronauts may face on future missions to the Moon and beyond.

Disease-resistant crops for space

A space crops investigation tests whether crop diseases develop faster and more severely in microgravity.

The experiment compares molecular and structural changes between Earth-grown and space station-grown plants infected with a disease-causing fungus. The findings could guide plant breeding on Earth to produce disease-resistant crops and help minimize yield losses in future space agriculture systems.

Space crops provide nutrition, increase dietary variety, and offer psychological benefits for astronauts during extended missions. They also absorb carbon dioxide, produce oxygen, and recycle water, which will become increasingly important as human missions extend farther from Earth.

Analysis helps astronauts thrive

The spacecraft also carries the first test of a compact microplate reader that arrived aboard the space station earlier this year.

The Commercially Enabled Rapid Space Science initiative experiment tests the device’s ability to detect and measure certain biomarkers such as antibodies, antigens, and proteins.

Use of the plate reader would allow scientists to analyze samples aboard the space station and obtain data quickly, rather than wait for the samples to return to Earth for analysis.

Ultimately, the research aims to support the timely detection of infections and other health issues in astronauts while expanding science capabilities in remote exploration locations where resupply will be more difficult.

Tracking antibiotic-resistant bacteria

A precision health investigation returns for its fourth and final planned stay aboard the space station to study how antibiotic-resistant bacteria survive and evolve in microgravity.

As part of the investigation, astronauts repeatedly sample surfaces throughout the space station to monitor for drug-resistant organisms.

The work could help develop ways to protect astronauts against bacterial infections during long-duration missions. On Earth, the findings could provide insight into how superbugs develop from the overuse of antibiotics.

To learn more about NASA’s biological and physical research in space, visit: https://science.nasa.gov/biological-physical/

NASA experiments focused on human and plant health and drug-resistant organisms will travel to the International Space Station aboard SpaceX’s 35th Commercial Resupply Services mission for the agency from Cape Canaveral Space Force Station in Florida, advancing research that benefits life on Earth and future exploration.

This research supports astronaut health during long-duration missions through four investigations from the agency’s Biological and Physical Sciences division, including 3D models of the human brain, a crop disease study, a faster way to assess astronaut health, and an analysis of antibiotic-resistant bacteria aboard the space station.

Tiny brain models, big questions

A new precision health investigation helps address a key question: What happens to the human brain in space?

The experiment sends small, lab-grown models of the human brain to the orbiting laboratory for five weeks. Researchers compare tissue models that traveled to space with identical ones kept on Earth to determine how a short spaceflight affects the human brain at the cellular level.

The effort could deepen our understanding of how the human brain responds to stress and help lay the groundwork for methods that counter risks to brain health that astronauts may face on future missions to the Moon and beyond.

Disease-resistant crops for space

A space crops investigation tests whether crop diseases develop faster and more severely in microgravity.

The experiment compares molecular and structural changes between Earth-grown and space station-grown plants infected with a disease-causing fungus. The findings could guide plant breeding on Earth to produce disease-resistant crops and help minimize yield losses in future space agriculture systems.

Space crops provide nutrition, increase dietary variety, and offer psychological benefits for astronauts during extended missions. They also absorb carbon dioxide, produce oxygen, and recycle water, which will become increasingly important as human missions extend farther from Earth.

Analysis helps astronauts thrive

The spacecraft also carries the first test of a compact microplate reader that arrived aboard the space station earlier this year.

The Commercially Enabled Rapid Space Science initiative experiment tests the device’s ability to detect and measure certain biomarkers such as antibodies, antigens, and proteins.

Use of the plate reader would allow scientists to analyze samples aboard the space station and obtain data quickly, rather than wait for the samples to return to Earth for analysis.

Ultimately, the research aims to support the timely detection of infections and other health issues in astronauts while expanding science capabilities in remote exploration locations where resupply will be more difficult.

Tracking antibiotic-resistant bacteria

A precision health investigation returns for its fourth and final planned stay aboard the space station to study how antibiotic-resistant bacteria survive and evolve in microgravity.

As part of the investigation, astronauts repeatedly sample surfaces throughout the space station to monitor for drug-resistant organisms.

The work could help develop ways to protect astronauts against bacterial infections during long-duration missions. On Earth, the findings could provide insight into how superbugs develop from the overuse of antibiotics.

To learn more about NASA’s biological and physical research in space, visit: https://science.nasa.gov/biological-physical/

Editor’s Note: This advisory was updated Oct. 8, 2026, to reflect revised timing for the Cygnus XL spacecraft’s deorbit and information about its departure.

After delivering more than 11,000 pounds of supplies, science experiments, and other cargo to the International Space Station for NASA, Northrop Grumman’s Cygnus XL spacecraft is scheduled to depart Friday, Oct. 9, as part of the company’s Commercial Resupply Services-24 mission, or Northrop Grumman CRS-24.

Watch NASA’s live coverage of departure beginning at 12:30 p.m. EDT through a variety of platforms. Learn where to watch online:

https://www.nasa.gov/live

Flight controllers on the ground will send commands for the space station’s Canadarm2 robotic arm to detach the Cygnus XL spacecraft from the Unity module’s Earth-facing port and maneuver it into position for release at 12:45 p.m. NASA astronaut Luke Delaney will monitor the operation from aboard the orbital complex.

Loaded with thousands of pounds of disposal items and other unneeded cargo, Cygnus XL will deorbit Monday, Oct. 12, for a destructive re-entry into Earth’s atmosphere, where it will safely burn up. NASA will not provide coverage of the spacecraft’s deorbit.

The resupply spacecraft launched on April 11 on a SpaceX Falcon 9 rocket from Space Launch Complex 40 at Cape Canaveral Space Force Station in Florida.

Learn more about this NASA commercial resupply mission at:

https://www.nasa.gov/mission/nasas-northrop-grumman-crs-24/

-end-

Josh 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