I Am Artemis Tom Percy

I Am Artemis Tom Percy

3 Min Read

I Am Artemis Tom Percy

Tom Percy, manager of systems engineering and integration for NASA’s Human Landing Systems Program, stands in front of an Apollo Program lander exhibit at the U.S. Space and Rocket Center in Huntsville near NASA’s Marshall Space Flight Center.

As NASA sets its sights on long-term exploration of the Moon and Mars, the agency is increasing the cadence of its Artemis missions. Helping bring these plans to fruition is Tom Percy, manager of systems engineering and integration for NASA’s Human Landing System Program.

Tom Percy, manager of systems engineering and integration for NASA’s Human Landing Systems Program, stands in front of an Apollo Program lander exhibit at the U.S. Space and Rocket Center in Huntsville near NASA’s Marshall Space Flight Center.
Tom Percy, manager of systems engineering and integration for NASA’s Human Landing Systems Program, stands in front of an Apollo Program lander exhibit at the U.S. Space and Rocket Center in Huntsville near NASA’s Marshall Space Flight Center.
NASA/Charles Beason

Percy serves as a focal point in working with providers SpaceX and Blue Origin to accelerate and streamline systems designs, manufacturing, testing, and certification. He ensures the crewed landers that SpaceX and Blue Origin are developing for Artemis are designed, built, tested, and will operate with other NASA exploration assets safely and effectively.

“You might say that all human landing system integration work lands on my desk. And with the rest of my talented, hard-working systems engineering and integration team, we’re working to make it all happen,” Percy said.

A native of North Easton, Massachusetts, Percy earned a bachelor’s degree in mechanical engineering from the Rochester Institute of Technology in Rochester, New York, where he first got hands-on experience working on designs that could be applied to NASA’s sustainable lunar architecture.

“As an undergrad, I served as president of the Rochester Institute of Technology’s chapter of the American Society of Mechanical Engineers. To get some real-world engineering experience, we decided to participate in the Great Moonbuggy Race,” Percy said. “Now called the Human Exploration Rover Challenge, the competition is held annually at NASA’s Marshall Space Flight Center in Huntsville, Alabama.

“At the time, I had never heard of Marshall Space Flight Center,” said Percy. “But our student team designed and built a rover and traveled to Huntsville for the race. That’s when I learned about some of the projects in Marshall’s diverse portfolio that the center works for NASA. And that’s when I began planning to make my way to NASA Marshall for my career.”

Percy chose to move south and earn a master’s degree in aerospace engineering from the Georgia Institute of Technology in Atlanta. His research in the advanced propulsion lab and courses in space systems design culminated in a spacecraft design course and the chance to work directly with engineers at Marshall.

Since landing at Marshall in 2003, Percy has been involved in evaluating transportation architecture options for human deep space exploration, including missions to land astronauts on the Moon and Mars. He also has expertise in space transportation, including advanced propulsion technology development; trajectory analysis; and spacecraft and mission concept development. Percy earned a doctorate in aerospace systems engineering from the University of Alabama in Huntsville.

The range of experience comes together in his current role as manager of human landing systems engineering and integration.

“The world watched the amazing success of Artemis II. NASA and our commercial providers are looking forward to flying again soon and executing increasingly complex Artemis missions,” Percy said.

Through the Artemis program, NASA will send astronauts on increasingly complex missions to explore more of the Moon for scientific discovery, economic benefits, establish an enduring human presence on the lunar surface, and to build on our foundation for the first crewed missions to Mars.

To learn more about the Artemis program, visit:

https://www.nasa.gov/artemis

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Beverly Perry

Communications Strategist

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Last Updated

Aug 06, 2026

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Lee Mohon
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Corinne Beckinger

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Lee Mohon

Taking Flight to Prepare for Space

Taking Flight to Prepare for Space

Two people in slim yellow spacesuits and white helmets climb into an airplane as technicians work around them.
NASA/Josh Valcarcel

NASA astronaut Adam Fuhrmann (right, in yellow) prepares for a training flight aboard NASA’s WB-57 aircraft in this July 16, 2026, photo.

These high-altitude flights train the crew to work in a tight environment and operate aircraft systems while in a pressure suit, preparing them for future missions to the International Space Station, Moon, or beyond.

Image credit: NASA/Josh Valcarcel

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HQ Web Team

Spacewalkers Prepare to Exit Station for Solar Array Mod Work

Spacewalkers Prepare to Exit Station for Solar Array Mod Work

NASA astronauts Jessica Meir and Anil Menon pose for their official portraits while wearing spacesuits at the Johnson Space Center in Houston, Texas.
NASA astronauts Jessica Meir and Anil Menon pose for their official portraits while wearing spacesuits at the Johnson Space Center in Houston, Texas.
NASA

NASA is streaming live coverage as two NASA astronauts prepare for a spacewalk outside the International Space Station. The spacewalk is scheduled to begin at approximately 8:35 a.m. EDT and last about six and a half hours. Watch online at: https://www.nasa.gov/live 

During the spacewalk, NASA astronauts Jessica Meir and Anil Menon will exit the station’s Quest airlock to prepare the 3B power channel for the future installation of International Space Station Roll-Out Solar Arrays (IROSA). The solar array, scheduled for delivery later this year, will be the seventh IROSA and will provide additional power to support critical station operations, including its safe and controlled deorbit.

Meir will serve as spacewalk crew member 1, wearing a suit with red stripes. Menon will serve as crew member 2, wearing an unmarked suit. This spacewalk will be Menon’s first and Meir’s sixth.

It also will be the 281st spacewalk in support of space station assembly, maintenance, and upgrades.

Learn more about station activities by following the space station blog, @space_station on X, as well as the ISS Facebook and ISS Instagram accounts.

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Mark A. Garcia

APOD: 2026 August 6 – New Sharpest Image of the Sun Uncovers Instability

APOD: 2026 August 6 – New Sharpest Image of the Sun Uncovers Instability

APOD

Astronomy Picture of the Day

Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

A image shows flowery dark and light structures on a yellow background.

New Sharpest Image of the Sun Uncovers Instability

Explanation: What does the new sharpest image of our Sun show? Instability. To be clear, a certain kind of interactive process called the Kelvin-Helmholtz instability (KHI). This instability can create waves and swirls when two streams flow past each other — in this case variable streams of solar magnetic plasma. Long hypothesized to occur on the Sun’s surface, KHI streaks and swirls were confirmed in just-released dramatic high-resolution images taken recently by the Inouye Solar Telescope in Hawaii, USA.  The featured false-yellow image, actually taken in deep blue, is the highest resolution image yet of the Sun in visible light. It spans about the radius of the Earth, but its finest details are city sized. Visible are several smooth tops of changing solar granules, while the edges of the flower-like structures have been found to harbor multiple KHI swirls. Future research may investigate how the KHI helps move energy, magnetic fields, and may even heat the surrounding solar corona.

Tomorrow’s picture: Rubin’s COSMOS

Date August 6, 2026
Credit NSF, NSO, AURA, MPS, Inouye Tel
Authors & editors: Robert Nemiroff, Jerry Bonnell, Cecilia Chirenti, Keighley Rockcliffe
A service of: ASD at NASA / GSFC,
NASA Science Activation & Michigan Tech. U.

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NASA’s IXPE May Have Proven 90-Year-Old Theory

NASA’s IXPE May Have Proven 90-Year-Old Theory

4 min read

NASA’s IXPE May Have Proven 90-Year-Old Theory

A first of its kind measurement of a magnetar may have captured empty space behaving in a way physicists have predicted for 90 years, but never directly observed. The results published Wednesday in Nature.

An illustration of a bright blue, glowing neutron star against a black, starry background. Thin blue rings representing magnetic field lines loop around the star. A bright blue beam shoots diagonally downward to the left. On the right side, two semi-transparent cones emerge from the star, containing wavy lines representing radiation. The upper cone aligns with the magnetic field and shoots a bright white beam diagonally upward, while the lower, darker blue cone is offset and shoots a purple-blue beam straight out to the right.
This artist’s concept depicts magnetar 1E 1547.0-5408, a rapidly rotating neutron star with magnetic fields over a trillion times stronger than Earth’s. Blue curves emanating from the star’s two magnetic poles represent the magnetic field lines. The magnetar is a significant emitter of radio and X-ray radiation, with their peaks offset during its 2.1-second rotation period. This indicates the primary X-ray emitter is a secondary “hot spot” offset from the magnetic axis. These emitters are depicted as conical sections: the lighter blue radio emission peaks at the magnetic field’s symmetry axis, while the darker blue X-ray emission peaks below. The upper and lower emission cones show X-ray polarization degrees of 40% and 80%, respectively. These high values, along with smooth, coherent variations in polarization across the rotation period, provide the most definitive signal to date of vacuum birefringence a long-sought prediction of quantum electrodynamics.
NASA/Pablo Garcia

Fast facts

  • Magnetars are a special class of neutron stars with ultra-strong magnetic fields, the strongest of any object in the observable universe, around a trillion times stronger than the strongest permanent magnets ever built on Earth. These super magnetic neutron stars offer glimpses into the physics of intense environments that cannot be found anywhere else.
  • Neutron stars are the leftover cores of massive stars, formed at the end of their life cycles, that possess more mass than the Sun, condensed down to the size of a city, making them natural laboratories for studying extreme physics.

Scientists using NASA’s IXPE (Imaging X-ray Polarimetry Explorer) conducted more than 140 hours of observations of the magnetar 1E 1547-5408, between March and April 2025, alongside NASA’s NICER (Neutron Star Interior Composition Explorer) and Murriyang, CSIRO’s Parkes radio telescope, owned and operated by Australia’s national science agency. This was the first-ever coordinated radio and X-ray polarization measurement of a magnetar.

1E 1547-5408, spinning in a full rotation every 2 seconds, is a unique magnetar that consistently emits bright radio energy and X-ray light, for reasons scientists are still trying to understand.

Observations showed the polarization, or the orientation and level of alignment of the incoming photons, is nearly three times greater than seen in similar sources. This high level of polarization was surprising, since the geometry of the magnetar’s magnetic fields suggest that the measurements we see should be close to zero at certain points in the star. Standard surface emission models do not explain this large value either, indicating that another effect must be boosting the polarization.

Enter vacuum birefringence, a 90-year-old theory in the realm of quantum electrodynamics. First proposed in 1936, the theory suggests that the vacuum of space can be altered by extreme magnetic fields, far higher than those humans can create on Earth. Under such conditions, the vacuum acts like a lens or a prism, filtering light based on the direction it is traveling, therefore enhancing its total polarization. The IXPE mission’s ability to measure X-ray polarization was essential to test this theory.

Simulations performed by the research team support the possibility of vacuum birefringence causing the distinct signal. Hoa Dinh Thi, a postdoctoral associate at Rice University in Houston and co-lead author of the publication highlighting the results, said, “Our model suggests that reproducing the observed X-ray polarization signatures, while also satisfying the constraints set by radio observations, requires the presence of vacuum birefringence in the neutron star’s environment. This finding exemplifies how neutron stars enable us to test fundamental physics in environments not replicable in labs on Earth.”

The large polarization measurements from the magnetar give strong support to the theoretical prediction, and could be the first time this effect has been directly observed anywhere.

“This result truly highlights the interdisciplinary power of the field of astrophysics,” said Rachael Stewart, a Ph.D. candidate at George Washington University and lead author of the paper published in Nature. “The information we obtained from looking at this distant star core also gives us clues about the nature of the fabric of reality as we know it, and I find that to be incredible.”

Further IXPE observations of this source and other magnetars will confirm this signal and potentially reveal other exotic effects of quantum electrodynamics.

More about IXPE

The IXPE mission, which continues to provide unprecedented data enabling groundbreaking discoveries about celestial objects across the universe, is a joint NASA and Italian Space Agency mission with partners and science collaborators in 12 countries. It is led by NASA’s Marshall Space Flight Center in Huntsville, Alabama. Headquartered in Falls Church, Virginia, BAE Systems, Inc., manages spacecraft operations together with the University of Colorado’s Laboratory for Atmospheric and Space Physics in Boulder. Learn more about IXPE’s ongoing mission here: 

https://nasa.gov/ixpe

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Michael Allen

Michael Allen

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Aug 05, 2026
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