NASA Flights Study Cosmic Ray Effects for Air, Future Space Travelers

Recent airborne science flights to Greenland are improving NASA’s understanding of space weather by measuring radiation exposure to air travelers and validating global radiation maps used in flight path planning. This unique data also has value beyond the Earth as a celestial roadmap for using the same instrumentation to monitor radiation levels for travelers entering Mars’ atmosphere and for upcoming lunar exploration.

NASA’s Space Weather Aviation Radiation (SWXRAD) aircraft flight campaign took place August 25-28 and conducted two five-hour flights in Nuuk, Greenland. Based out of NASA’s Langley Research Center in Hampton, Virginia, the mission gathered dosimetry measurements, or the radiation dose level, to air travelers from cosmic radiation. Cosmic radiation is caused by high-energy particles from outer space that originate from our Sun during eruptive events like solar flares and from events farther away, like supernovae in our Milky Way galaxy and beyond.

“With NASA spacecraft and astronauts exploring the Moon, Mars, and beyond, we support critical research to understand – and ultimately predict – the impacts of space weather across the solar system,” said Jamie Favors, director of NASA’s Space Weather Program at NASA Headquarters in Washington. “Though this project is focused on aviation applications on Earth, NAIRAS could be part of the next generation of tools supporting Artemis missions to the Moon and eventually human missions to Mars.”

NASA’s Nowcast of Aerospace Ionizing Radiation System, or NAIRAS, is the modeling system being enhanced by the SWXRAD airborne science flights. The model features real-time global maps of the hazardous radiation in the atmosphere and creates exposure predictions for aircraft and spacecraft.

“The radiation exposure is maximum at the poles and minimum at the equator because of the effect of Earth’s magnetic field. In the polar regions, the magnetic field lines are directed into or out of the Earth, so there’s no deflection or shielding by the fields of the radiation environment that you see everywhere else.” explained Chris Mertens, principal investigator of SWXRAD at NASA Langley. “Greenland is a region where the shielding of cosmic radiation by Earth’s magnetic field is zero.”

That means flight crews and travelers on polar flights from the U.S. to Asia or from the U.S. to Europe are exposed to higher levels of radiation.

The data gathered in Greenland will be compared to the NAIRAS modeling, which bases its computation on sources around the globe that include neutron monitors and instruments that measure solar wind parameters and the magnetic field along with spaceborne data from instruments like the NOAA GOES series of satellites.

“If the new data doesn’t agree, we have to go back and look at why that is,” said Mertens. “In the radiation environment, one of the biggest uncertainties is the effect of Earth’s magnetic field. So, this mission eliminates that variable in the model and enables us to concentrate on other areas, like characterizing the particles that are coming in from space into the atmosphere, and then the transport and interactions with the atmosphere.”

The SWXRAD science team flew aboard NASA’s B200 King Air with five researchers and crew members. In the coming months, the team will focus on measurement data quality checks, quantitative modeling comparisons, and a validation study between current NAIRAS data and the new aircraft dosimeter measurements.

All of this information is endeavoring to protect pilots and passengers on Earth from the health risks associated with radiation exposure while using NASA’s existing science capabilities to safely bring astronauts to the Moon and Mars.

“Once you get to Mars and even the transit out to Mars, there would be times where we don’t have any data sets to really understand what the environment is out there,” said Favors. “So we’re starting to think about not only how do we get ready for those humans on Mars, but also what data do we need to bring with them? So we’re feeding this data into models exactly like NAIRAS. This model is thinking about Mars in the same way it’s thinking about Earth.”

The SWXRAD flight mission is funded through NASA’s Science Mission Directorate Heliophysics Division. NASA’s Space Weather Program Office is hosted at NASA Langley and facilitates researchers in the creation of new tools to predict space weather and to understand space weather effects on Earth’s infrastructure, technology, and society.

For more information on NASA Heliophysics and NAIRAS modeling visit:

NASA Space Weather

NASA’s Nowcast of Aerospace Ionizing Radiation System

About the Author

Charles G. Hatfield

Science Public Affairs Officer, NASA Langley Research Center

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NASA Opens 2026 Human Lander Challenge for Life Support Systems, More

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NASA Opens 2026 Human Lander Challenge for Life Support Systems, More

NASA’s 2026 Human Lander Challenge is seeking ideas from college and university students to help evolve and transform technologies for life support and environmental control systems. These systems are critical for sustainable, long-duration human spaceflight missions to the Moon, Mars, and beyond.

The Human Lander Challenge supports NASA’s efforts to foster innovative solutions to a variety of areas for NASA’s long-duration human spaceflight plans at the Moon under the Artemis campaign. The Human Lander Challenge is sponsored by the Human Landing System Program within the Exploration Systems Development Mission Directorate.

The 2026 competition invites undergraduate and graduate-level teams based in the U.S., along with their faculty advisors, to develop innovative, systems-level solutions to improve aspects for a lander’s ECLSS (Environmental Control and Life Support System) performance. These air, water, and waste systems provide vital life support so future Artemis astronauts can live and work safely and effectively on the Moon during crewed missions.

Each proposed solution should focus on one of the following long-duration ECLSS subtopics:

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“A robust ECLSS transforms a spacecraft like a lander from just hardware into a livable environment, providing breathable air, clean water, and safe conditions for astronauts as they explore the Moon,” said Kevin Gutierrez, acting office manager for the Human Landing Systems Missions Systems Management Office at NASA Marshall. “Without ECLSS we can’t sustain human presence on the Moon or take the next steps toward Mars. The subtopics in the 2026 Human Lander Challenge reflect opportunities for students to support the future of human spaceflight.”

2026 Competition

Teams should submit a non-binding notice of intent by Monday, Oct. 20, if they intend to participate. Proposal packages are due March 4, 2026.

Based on proposal package evaluations in Phase 1, up to 12 finalist teams will be selected to receive a $9,000 stipend and advance to Phase 2 of the competition, which includes a final design review near NASA’s Marshall Space Flight Center in Huntsville, Alabama, June 23-25, 2026. The top three placing teams from Phase 2 will share a total prize of $18,000.

Landers are in development by SpaceX and Blue Origin as transportation systems that will safely ferry astronauts from lunar orbit to the Moon’s surface and back for the agency’s Artemis campaign. NASA Marshall manages the Human Landing System Program.

The challenge is administered by the National Institute of Aerospace on behalf of the agency.

Through the agency’s Artemis campaign, NASA will send astronauts to explore the Moon for scientific discovery, economic benefits, and to build the foundation for the first crewed missions to Mars – for the benefit of all.

For more information on NASA’s Human Lander Challenge and how to participate, visit:

https://hulc.nianet.org/

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NASA, Sierra Space Modify Commercial Resupply Services Contract

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“Development of new space transportation systems is difficult and can take longer than what’s originally planned.  The ability to perform a flight demonstration can be a key enabler in a spacecraft’s development and readiness, as well as offering greater flexibility for NASA and Sierra Space,” said Dana Weigel, manager of NASA’s International Space Station Program. “As NASA and its partners look toward space station deorbit in 2030, this mutually agreed to decision enables testing and verification to continue on Dream Chaser, as well as demonstrating the capabilities of the spaceplane for future resupply missions in low Earth orbit.”

NASA, and its commercial and international partners, will continue to supply the orbital complex with critical science, supplies, and hardware as the agency prepares to transition to commercial space stations in low Earth orbit.   NASA continues to work with a variety of private companies to develop a competitive, space industrial base for cargo services, which will be needed for future commercial space stations. With a strong economy in low Earth orbit, NASA will be one of many customers of private industry as the agency explores the Moon under the Artemis campaign and Mars along with commercial and international partners.

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3-in-1 Launch

A SpaceX Falcon 9 rocket lifts off from NASA’s Kennedy Space Center in Florida on Sept. 24, 2025, carrying three missions that will investigate the Sun’s influence across the solar system.

NASA’s IMAP (Interstellar Mapping and Acceleration Probe), the agency’s Carruthers Geocorona Observatory, and National Oceanic and Atmospheric Administration’s (NOAA) Space Weather Follow On–Lagrange 1 (SWFO-L1) spacecraft will each focus on different effects of the solar wind – the continuous stream of particles emitted by the Sun – and space weather – the changing conditions in space driven by the Sun – from their origins at the Sun to their farthest reaches billions of miles away at the edge of our solar system.

Image credit: NASA/Kim Shiflett

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NASA-ISRO Satellite Sends First Radar Images of Earth’s Surface

The NISAR (NASA-ISRO Synthetic Aperture Radar) Earth-observing radar satellite’s first images of our planet’s surface are in, and they offer a glimpse of things to come as the joint mission between NASA and ISRO (Indian Space Research Organisation) approaches full science operations later this year.

“Launched under President Trump in conjunction with India, NISAR’s first images are a testament to what can be achieved when we unite around a shared vision of innovation and discovery,” said acting NASA Administrator Sean Duffy. “This is only the beginning. NASA will continue to build upon the incredible scientific advancements of the past and present as we pursue our goal to maintain our nation’s space dominance through Gold Standard Science.”

Images from the spacecraft, which was launched by ISRO on July 30, display the level of detail with which NISAR scans Earth to provide unique, actionable information to decision-makers in a diverse range of areas, including disaster response, infrastructure monitoring, and agricultural management.

“By understanding how our home planet works, we can produce models and analysis of how other planets in our solar system and beyond work as we prepare to send humanity on an epic journey back to the Moon and onward to Mars,” said NASA Associate Administrator Amit Kshatriya. “The successful capture of these first images from NISAR is a remarkable example of how partnership and collaboration between two nations, on opposite sides of the world, can achieve great things together for the benefit of all.”

On Aug. 21, the satellite’s L-band synthetic aperture radar (SAR) system, which was provided by NASA’s Jet Propulsion Laboratory in Southern California, captured Mount Desert Island on the Maine coast. Dark areas represent water, while green areas are forest, and magenta areas are hard or regular surfaces, such as bare ground and buildings. The L-band radar system can resolve objects as small as 15 feet (5 meters), enabling the image to display narrow waterways cutting across the island, as well as the islets dotting the waters around it.

Then, on Aug. 23, the L-band SAR captured data of a portion of northeastern North Dakota straddling Grand Forks and Walsh counties. The image shows forests and wetlands on the banks of the Forest River passing through the center of the frame from west to east and farmland to the north and south. The dark agricultural plots show fallow fields, while the lighter colors represent the presence of pasture or crops, such as soybean and corn. Circular patterns indicate the use of center-pivot irrigation.

The images demonstrate how the L-band SAR can discern what type of land cover — low-lying vegetation, trees, and human structures — is present in each area. This capability is vital both for monitoring the gain and loss of forest and wetland ecosystems, as well as for tracking the progress of crops through growing seasons around the world.

“These initial images are just a preview of the hard-hitting science that NISAR will produce — data and insights that will enable scientists to study Earth’s changing land and ice surfaces in unprecedented detail while equipping decision-makers to respond to natural disasters and other challenges,” said Nicky Fox, associate administrator, Science Mission Directorate at NASA Headquarters in Washington. “They are also a testament to the years of hard work of hundreds of scientists and engineers from both sides of the world to build an observatory with the most advanced radar system ever launched by NASA and ISRO.”

The L-band system uses a 10-inch (25-centimeter) wavelength that enables its signal to penetrate forest canopies and measure soil moisture and motion of ice surfaces and land down to fractions of an inch, which is a key measurement in understanding how the land surface moves before, during, and after earthquakes, volcanic eruptions, and landslides.

The preliminary L-band images are an example of what the mission team will be able to produce when the science phase begins in November. The satellite was raised into its operational 464-mile (747-kilometer) orbit in mid-September.

The NISAR mission also includes an S-band radar, provided by ISRO’s Space Applications Centre, that uses a 4-inch (10-centimeter) microwave signal that is more sensitive to small vegetation, making it effective at monitoring certain types of agriculture and grassland ecosystems.

The spacecraft is the first to carry both L- and S-band radars. The satellite will monitor Earth’s land and ice surfaces twice every 12 days, collecting data using the spacecraft’s drum-shaped antenna reflector, which measures 39 feet (12 meters) wide — the largest NASA has ever sent into space.

The NISAR mission is a partnership between NASA and ISRO spanning years of technical and programmatic collaboration. The successful launch and deployment of NISAR builds on a strong heritage of cooperation between the United States and India in space.

The Space Applications Centre provided the mission’s S-band SAR. The U R Rao Satellite Centre provided the spacecraft bus. The launch vehicle was provided by Vikram Sarabhai Space Centre, and launch services were through Satish Dhawan Space Centre. Key operations, including boom and radar antenna reflector deployment, are now being executed and monitored by the ISRO Telemetry, Tracking and Command Network’s global system of ground stations.

Managed by Caltech in Pasadena, NASA JPL leads the U.S. component of the project. In addition to the L-band SAR, reflector, and boom, JPL also provided the high-rate communication subsystem for science data, a solid-state data recorder, and payload data subsystem. NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the Near Space Network, which receives NISAR’s L-band data.

To learn more about NISAR, visit:

https://nisar.jpl.nasa.gov

-end-

Liz Vlock
Headquarters, Washington
202-358-1600
elizabeth.a.vlock@nasa.gov

Andrew Wang / Jane J. Lee
Jet Propulsion Laboratory, Pasadena, Calif.
626-379-6874 / 818-354-0307
andrew.wang@jpl.nasa.gov / jane.j.lee@jpl.nasa.gov

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Gerelle Q. Dodson