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Listen to this audio excerpt from Ryan Schulte, Orion flywheel project manager:

As the four Artemis II astronauts traveled on a 694,481-mile journey around the Moon and back, the Orion spacecraft provided them with all the essentials for deep space life, including daily exercise. The crew used an exercise device called the flywheel throughout their mission to maintain their physical and mental health, and Ryan Schulte, Orion flywheel project manager, led the team responsible for developing the flywheel for the historic flight.

At NASA’s Johnson Space Center in Houston, Schulte oversees the team that designed, built, tested, and flew the flywheel used on Artemis II, and currently develops a fleet of more reusable exercise devices for future Artemis missions.  

The flywheel is a compact, multi-functional device about the size of a large shoebox that provides the crew with a range of aerobic and resistive workouts without requiring any electrical power from the spacecraft.  

“It works kind of like an inertial yo-yo,” said Schulte. 

The user can select different gear ratios for different resistance modes, and the flywheel can provide ultimately up to 500 pounds of resistance.  

“It’s really all dependent upon how much effort you put in. The crew can do squats, deadlifts, bent rows, high-pulls, curls, heel raises, and aerobic rowing all in one device.”  

Developing the flywheel for Orion posed unique challenges for Schulte’s team, ranging from limited space and crew mobility to reducing noise generation for easy crew communication during workouts.

“One of the biggest challenges was trying to fit everything into this compact box, and also to be able to have enough space inside the rest of the capsule for someone to fully stand up and fully extend at high rates of speed and repetitions,”  said Schulte. 

The team’s successful response to these challenges was displayed during the approximately 10-day Artemis II mission, where the crew members exercised for roughly 30 minutes per day with the flywheel. The sessions helped to counteract both the physical and mental effects induced by a microgravity environment, which on future, longer-duration Artemis missions, will become an increasingly important component for astronauts.

“Without Earth’s gravity, the crew’s muscles, bones, and stamina all begin to atrophy, or weaken,” Schulte said. “Exercise will help prevent injury as crews need to perform long lunar spacewalks on the surface or for emergency egress out of the capsule.”

Exercise with the flywheel also supports the crew’s mental health, providing psychological benefits while living in a compact space inside Orion. 

“It’s a great form of stress relief,” Schulte said. “It improves their mental clarity by getting their fluids and their blood flowing, which can stagnate in your head in zero gravity. We’ve talked to some of the crew about how much clearer their minds feel after exercise in flight.”

Schulte began his career as a co-op at Johnson in 2007, then joined NASA full-time as a test engineer for pyrotechnics, propulsion, and power systems. He later transitioned to NASA’s Human Health and Performance Directorate and began working in the Human Research Program, where his interest in human interfaces with engineering grew, eventually leading him to his current role as the flywheel project manager.

With the success of Artemis II and the promise of future missions ahead, Schulte’s work on the flywheel and next generation exercise devices will play a vital role in keeping astronauts safe, healthy, and mission ready on the lunar surface and beyond. 

Written by Sharon Wilson Purdy, Planetary Geologist at the Smithsonian National Air and Space Museum

Earth planning date: Friday, April 24, 2026

There was excitement in the air as the Curiosity Science Team kicked off a drill campaign at the Atacama site to characterize the first Mount Sharp layered-sulfate bedrock since leaving the boxwork terrain.

Monday was a three-sol plan (4873-4875) where we focused on “drill sol 1” activities that included a pre-load test on our drill target as well as triage contact science. APXS assembled a set of repeated observations on the Atacama drill target, and the coordinated MAHLI images taken with different lighting will provide an opportunity to detect possible changes between the datasets. Mastcam assembled stereo mosaics to document the Atacama drill site, investigate variations in the bedrock at “Kimsa Chata,” and characterize the layering within Paniri butte.

Planning resumed Friday with another three-sol plan (4876-4878) that included the full drill and portion characterization related to “drill sols 2 and 3” activities. Mastcam planned stereo mosaics of rocks in the workspace including a laminated rock with an exposed edge named “Queen of the Andes,” a rock with polygonal fractures that was broken when the rover drove over it named “Curaco,” and more coverage of the “El Almendrillo” target.

Rounding out the plans this week, the Environmental theme group continues to monitor dust in the atmosphere, study cloud movements, and document the presence of dust devils. The rover will also autonomously select two targets to be analyzed by the ChemCam instrument.

Next week we look forward to continuing our drill campaign, where the next step will be delivering a portion of the Atacama target to the ChemMin instrument for analysis. The science team is looking forward to seeing how the mineralogy of the layered sulfate unit here compares to our last drill of the same unit at the Mineral King site, which is nearly 160 meters (525 feet) below our current location!

One of the most powerful radar systems ever launched into space has mapped the ground moving beneath one of fastest subsiding capitals in the world: Mexico City. The findings show how quickly and reliably the NISAR (NASA-ISRO Synthetic Aperture Radar) satellite can track real-time changes across Earth’s surface from orbit, unhindered by clouds or vegetation that impede optical sensors and higher-frequency radars.

Home to some 20 million people, the Mexico City area is built atop an aquifer. Extensive groundwater pumping, combined with the weight of urban development, has resulted in the compaction of the ancient lakebed beneath the city for more than a century. An engineer first documented the issue in 1925, and by the 1990s and 2000s, parts of the metropolitan area were sinking by around 14 inches (35 centimeters) per year, damaging infrastructure including the Metro, one of the largest rapid transit systems in the Americas.

Several generations of space-based radar have tracked Mexico City on the move. The NISAR mission, launched in July 2025, is now advancing these efforts, analyzing fast-changing areas that are challenging to survey from space. Capable of working day and night, rain or shine, NISAR’s L-band synthetic aperture radar is designed to track subtle motions such as land sinking and rising, glaciers sliding, and croplands growing, as it passes overhead multiple times a month.

“Images like this confirm that NISAR’s measurements align with expectations,” said Craig Ferguson, deputy project manager at NASA Headquarters in Washington. “NISAR’s long wavelength L-band radar will make it possible to detect and track land subsidence in more challenging and densely vegetated regions such as coastal communities where they may have the compounding effects of both land subsidence and sea level rise.”

The new analysis is based on preliminary measurements taken by NISAR between October 2025 and January 2026, during Mexico City’s dry season. Parts of the region found to be subsiding by more than half an inch (more than 2 centimeters) per month are shown in dark blue. The yellow and red areas are likely residual noise signals that are expected to decrease as NISAR collects more data. The structure near the center of the image is Benito Juarez International Airport, with Lake Nabor Carrillo visible as a dark green oblong to the northeast.

One area landmark — the Angel of Independence along the Paseo de la Reforma — is a visible indicator of subsidence. Built in 1910 to commemorate 100 years of Mexico’s independence, the towering monument stands 114 feet (36 meters) high and has had 14 steps added to its base as the land around it gradually sinks.

“Mexico City is a well-known hot spot when it comes to subsidence, and images like this are just the beginning for NISAR,” said David Bekaert, a project manager at the Flemish Institute for Technological Research and a member of the NISAR science team. “We’re going to see an influx of new discoveries from all over the world, given the unique sensing capabilities of NISAR and its consistent global coverage.”

A joint mission developed by NASA and the Indian Space Research Organisation (ISRO), NISAR launched from Satish Dhawan Space Centre on India’s southeastern coast. Managed by Caltech, NASA’s Jet Propulsion Laboratory in Southern California leads the United States component of the project and provided the satellite’s L-band SAR and antenna reflector. The spacecraft bus and its S-band SAR were provided by ISRO.

The NISAR satellite is the first to carry two SAR instruments at different wavelengths and is monitoring Earth’s land and ice surfaces twice every 12 days, collecting data using the spacecraft’s giant drum-shaped reflector, which measures 39 feet (12 meters) wide — the largest radar antenna reflector NASA has ever sent into space. 

To learn more about NISAR, visit:

https://science.nasa.gov/mission/nisar/

Media Contacts

Andrew Wang / Andrew Good
Jet Propulsion Laboratory, Pasadena, Calif.
626-379-6874 / 818-393-2433
andrew.wang@jpl.nasa.gov / andrew.c.good@jpl.nasa.gov

Written by Sally Younger

2026-027

A luminous swirl set against the deep black of space, the barred spiral galaxy IC 486 glows with a soft, ethereal light in this NASA Hubble Space Telescope image from April 13, 2026.

IC 486 lies right on the edge of the constellation Gemini (the Twins), around 380 million light-years from Earth. Classified as a barred spiral galaxy, it features a bright central bar-shaped structure from which its spiral arms unfurl, wrapping around the core in a smooth, almost ring-like pattern.

Read more about IC 486 and how scientists are studying galaxies using observations like this.

Image credit: ESA/Hubble & NASA, M. J. Koss, A. J. Barth

NASA and Boeing have completed wind tunnel testing to study an innovative advanced aircraft design intended to improve aerodynamic efficiency.

A truss-braced wing configuration, involving a long, thin wing with aerodynamically shaped structural supports, has the potential to reduce fuel and operational costs for future airliners, which is why NASA has collaborated with Boeing to advance the design.

But this kind of wing would be much more than a simple tweak to existing designs – for an aircraft the size of a passenger jet, it would be a revolutionary redesign, requiring extensive study from NASA and Boeing.

The most recent round of testing used a complex wind tunnel model to collect data on how air flows around a truss-braced wing model and the forces that would be exerted on such a wing in flight.

The test used a semispan model – essentially half an aircraft mounted on a wind tunnel floor. The model has features built in to simulate the mechanisms that increase the amount of lift a wing produces. By adjusting the model’s slats, flaps, and other moving control surfaces, the team can configure it to the low speed, high-lift settings of takeoff and landing conditions.

The model is part of a collaboration to test what’s known as Boeing’s Subsonic Ultra Green Aircraft Research (SUGAR) concept.

In December, teams completed testing of the model wind tunnel operated by the company QinetiQ in Farnborough, England. This large wind tunnel uses pressurized conditions to predict airplane behavior in takeoff and landing conditions.

The large size of the tunnel gives the model fidelity to better predict the behavior of a plane in flight. This capability allowed the team to confidently assess aerodynamic performance.

NASA and Boeing research teams analyzed data in real time to ensure the model performed as expected. Researchers are still reviewing the full results, but the test has already added valuable information to a growing body of research aimed at reducing fuel use in future aircraft designs.

The testing was just the latest stop for this research. NASA and Boeing have tested the concept at multiple NASA facilities to collect data as they work to build a comprehensive understanding of this advanced airframe concept.

This collaboration serves as an example of how NASA serves as an incubator for breakthrough technology with profound commercial applications. The transonic truss-braced wing concept originated from NASA aeronautics-supported research and NASA and Boeing engineers have worked together, test-by-test, to move this wing design from an idea to a practical reality.

The work began in NASA’s Advanced Air Vehicles Program and continues as part of the Subsonic Flight Demonstrator project under the Integrated Aviation Systems Program in the agency’s Aeronautics Research Mission Directorate.

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