At the University of Â鶹´«Ã½ , an outreach program is helping high school students step into scientific research early.

HI STAR, short for Â鶹´«Ã½ Student/Teacher Astronomy Research, connects students with mentors and real astronomical data. The program’s impact was on display at the recent Maui County Science and Engineering Fair, where HI STAR participants earned top honors.

First place

Emma Agcolicol, a 16-year-old sophomore at Baldwin High School, earned first place in the Physics and Astronomy category, Senior Division.

Agcolicol and her partner studied an unconfirmed exoplanet known as TOI-6055.01. Using data from the , they applied the transit method to track the potential planet.

“Whether it is detection or Doppler shifts, I find it fascinating that there’s so many different planets with their own unique characteristics,” Agcolicol said.

Agcolicol has participated in HI STAR for three years. She said the program helped her connect with researchers and explore different areas of astronomy.

“I enjoy getting to meet many different researchers that have the same levels of excitement… I’ve even worked with a few of HI STAR teachers on different projects, so that was amazing,” she said.

She will advance to the state science fair.

Student awards

Other HI STAR students also received recognition:

• James Anchetta, third place, Physics and Astronomy (Senior Division); coronal rain research
• Alexandra “Lexi” Lombardi, second place, Physics and Astronomy (Senior Division) and NASA Earth Systems Award; comet and asteroid research
• Chelsey Miguel, first place, Translational Medical Services (Senior Division) and Regeneron Biomedical Award

All will advance to the state competition.

Lasting impact

HI STAR alumni have gone on to careers as meteorologists, data analysts and engineering assistants. Others are pursuing degrees in astrophysics. One former student now serves as a White House senior communications advisor.

The program is led by mentors Armstrong, Carolyn Kaichi, Jung Park and Mike Nassir, who guide students through hands-on research and exposure to careers in science.

An astronomer at the University of Â鶹´«Ã½ at Hilo is using data from the (CFHT) on Maunakea to help reconstruct a slow-motion cosmic collision, one that has been unfolding for hundreds of millions of years.

A new study from principal investigator R. Pierre Martin, a professor of at UH Hilo, and international researchers such as PhD student Camille Poitras and colleagues at Université Laval in Québec, Canada, simulates the past, present and future of two spiral galaxies, NGC 2207 and IC 2163. The findings were recently published in .

The team used a one-of-a-kind instrument on CFHT called , which can capture incredibly detailed views of entire galaxies all at once.

“Understanding what’s happening during these collisions is fundamental to our knowledge of galaxy evolution in general,” said Martin. “Our own galaxy, the Milky Way, has been through multiple interactions during its lifetime, with one of them having likely triggered the formation of our Sun, about 5 billion years ago.”

Collision timeline

The interaction began about 440 million years ago. Since then, the galaxies have slammed together, pulled apart and reconnected multiple times. Throughout time, they are expected to merge into a single system, their original structures no longer recognizable.

To trace that evolution, the team ran hundreds of simulations, mapping gas movement, star birth, supernovae explosions, chemical enrichment and structural changes across more than 600 million years.

The study shows how these encounters reshape galaxies such as mixing elements, triggering new star formation and influencing how planetary systems could emerge.

Pierre is quick to highlight that Poitras, the study’s lead author, was responsible for most of the work encapsulated in the paper. For Poitras, who began the work as an undergraduate, the project highlights the value of early research experience. That same hands-on approach is central at UH Hilo.

Hands-on learning

“Telescope and lab time have become a central pillar of UH Hilo’s astronomy program,” Martin said. “Even if you’ve never used a telescope before in your life, for the four years you have here, it’s all about hands-on experience.”

Every astronomy course includes lab work, often connecting students directly with observatories on Maunakea. Since 2017, all telescope proposals submitted through the UH Hilo telescope time allocation process must include undergraduate researchers.

For more go to the .

Researchers at the University of Â鶹´«Ã½ have uncovered new clues about how energy moves through the Sun’s outer atmosphere, using one of nature’s rarest events as their window: total solar eclipses.

Drawing on more than a decade of eclipse observations, a team led by Shadia Habbal at the has, for the first time, clearly identified turbulent structures in the Sun’s corona and shown that they can survive far from the solar surface. The findings help explain how the solar wind forms and evolves as it streams through the solar system. The study was published in .

“This work helps us understand how the Sun transfers energy into space,” said Habbal. “That process ultimately affects space weather, which can disrupt satellites, communications and power systems on Earth. Understanding where this turbulence comes from is key to predicting those impacts.”

Eclipse view

During a total solar eclipse, the Moon briefly blocks the Sun’s bright disk, allowing astronomers to observe the faint corona in exceptional detail. These moments reveal delicate, thread-like structures shaped by magnetic fields rising from below the Sun’s visible surface. High-resolution eclipse images show a corona that is far more dynamic than it appears in everyday solar observations.

Within these structures, the team identified clear signs of turbulence. Some features form vortex rings that resemble smoke rings, while others show rolling, wave-like motions similar to those seen in Earth’s clouds. By comparing eclipse data collected over nearly 12 years, spanning a full solar cycle, the researchers traced the origin of this activity to what are called prominences—large, looping structures rooted on the Sun.

Prominences are dramatically cooler and denser than the million-degree plasma surrounding them. Where these contrasting regions meet, sharp changes in temperature and density create unstable conditions that trigger turbulent motion.

“For the first time, we were able to watch these turbulent structures form near the Sun and then follow them as they flowed outward with the solar wind,” Habbal said. “Seeing the same features later in space-based images tells us they remain intact over enormous distances.”

The study reveals the origin and evolution of turbulence in the corona, a process long linked to coronal heating and the acceleration of the solar wind.

The University of Â鶹´«Ã½ at ²ÑÄå²Ô´Ç²¹â€™s (IfA) is celebrating national recognition for a faculty member whose research is helping answer one of humanity’s biggest questions: How do planetary systems form, and could worlds like Earth be common in the universe? Fei Dai, an assistant astronomer at IfA, has been named a , one of the most notable and competitive honors for early-career scientists in North America.

Dai studies exoplanets, which are planets orbiting stars beyond our Sun. He investigates how their orbits, structures and compositions evolve over billions of years.

“I am incredibly grateful to receive this prestigious award,” said Dai. “While research is often a journey of quiet persistence and incremental progress, a milestone like this offers a chance to reflect on what our group has accomplished over the past few years. The Sloan Fellowship will undoubtedly catalyze new innovations and discoveries in the years ahead.”

Diversity of worlds

Dai’s work is reshaping scientists’ understanding of how solar systems are built. In a 2023 study, he and collaborators found that six planets orbiting the star TOI-1136 move in an almost perfectly synchronized pattern, known as a “resonant chain.” He has also played a central role in commissioning the Keck Planet Finder, a cutting-edge instrument capable of detecting tiny stellar wobbles to measure the masses and possible compositions of Earth-sized planets. That research is paving the way for future NASA missions designed to identify and study worlds that could support life.

“Fei represents the very best of the next generation of astronomers,” said IfA Director Doug Simons. “His work is fundamentally changing how we understand the birth and evolution of planetary systems. This recognition affirms not only his remarkable talent, but also the strength of IfA’s exoplanet research faculty and program.”

Dai joined IfA in 2024 following a highly competitive national search and previously held a NASA Sagan Fellowship, widely regarded as one of astronomy’s most selective postdoctoral awards.

Awarded this year to 126 of the most promising young researchers across the U.S. and Canada, the Sloan Research Fellowship recognizes scholars already driving major advances in their fields. Since 1955, eight faculty members from UH have received the distinction, including IfA faculty Michael Liu (2005), Christoph Baranec (2014) and Dan Huber (2019).

Researchers at the University of Â鶹´«Ã½ (IfA) are helping reshape how scientists study the Sun. The UH-led team has developed a new artificial intelligence (AI) tool that can map the Sun’s magnetic field in three dimensions with unprecedented accuracy, supporting research tied to the U.S. National Science Foundation (NSF) built and managed by the NSF National Solar Observatory (NSO) on HaleakalÄ�. The team’s findings were published in the .

“The Sun is the strongest space weather source that can affect everyday life here on Earth, especially now that we rely so much on technology,” said Kai Yang, an IfA postdoctoral researcher who led the work. “The Sun’s magnetic field drives explosive events like solar flares and coronal mass ejections. This new technique helps us understand what triggers these events and strengthens space weather forecasts, giving us earlier warnings to protect the systems we use every day.”

The Sun’s magnetic field controls eruptions that can disrupt satellites, power systems and communications on Earth. However, the field is tough to measure, making it difficult to create accurate maps. Instruments can show the way the field tilts, but not whether it points toward us or away from us, like looking at a rope from the side and not knowing which end is closer. Another problem is height. When scientists look at the Sun, they see several layers at the same time, so it’s difficult to tell how high each magnetic structure actually is. Sunspots make this even trickier because their strong magnetic fields bend the surface downward, creating a dip.

AI-powered insights

IfA researchers partnered with the National Solar Observatory and the High Altitude Observatory of the NSF National Center for Atmospheric Research to build a new machine-learning system that blends real data with the basic laws of physics. Their algorithm, the Haleakal� Disambiguation Decoder, relies on a simple rule: magnetic fields form loops and don’t start or end. From there, the AI can figure out the true direction of the field and estimate the correct height of each layer.

The method has worked well on detailed computer models of the Sun, including calm areas, bright active regions and sunspots. Its accuracy is especially helpful for making sense of the high-resolution images from the Daniel K. Inouye Solar Telescope.

“With this new machine-learning tool, the Daniel K. Inouye Solar Telescope can help scientists build a more accurate 3D map of the Sun’s magnetic field,” said Yang. “It also reveals related features, like vector electric currents in the solar atmosphere that were previously very hard to measure. Together, this gives us a clearer picture of what drives powerful solar eruptions.”

Clearer Sun insights

With these advances, researchers can see the Sun’s magnetic landscape more accurately and improve predictions of the solar activity that impacts life on Earth.

AstroDay West 2025 brought a wave of excitement to Kona Commons as crowds gathered around science booths, telescopes and live demonstrations. The University of Â鶹´«Ã½ (IfA) joined partners across the island to offer a day of engaging ways to explore the universe at the annual event hosted by .

The day-long celebration offered family-friendly learning, free giveaways and simple science experiments designed to spark curiosity. Organizers said the goal was to make astronomy feel approachable for everyone.

“We were excited to provide keiki and families with the opportunity to learn more about science and astronomy right here in Kona,” said Carolyn Kaichi, education and outreach specialist at IfA. “Through hands-on learning and key partnerships with organizations across the island, we hoped to inspire the next generation of local science and technology leaders.”

Sun, sky and science

Visitors lined up to use a special solar telescope to safely view details on the sun’s surface. Nearby booths showed how stars form, how weather shapes our islands and how scientists observe the sky from Â鶹´«Ã½â€™s mountaintops. IfA staff and students answered questions, guided activities and shared stories about their work.

AstroDay has long been a staple for families interested in science with a mission to strengthen public understanding of astronomy and create more opportunities for learning.

The event also featured displays and expertise from a wide range of partners, such as Las Cumbres Observatory, W. M. Keck Observatory, Gemini Observatory, Subaru Telescope, Canada-France-Â鶹´«Ã½ Telescope, TMT International Observatory, NASA Solar System Ambassadors and the UH Hilo .

A new chapter in automated astronomy has begun on Maunakea. The University of Â鶹´«Ã½ (IfA) has launched initial science operations for , a robotic laser adaptive optics system now operating at the . The milestone marks a major leap in how astronomers observe the night sky.

Robo-AO-2 is designed to correct the blur caused by Earth’s atmosphere, sharpening images of hundreds of objects each night with minimal human oversight. The system is led by astronomer Christoph Baranec, who has spent years advancing adaptive optics technology at IfA.

“Making Robo-AO-2 operational represents years of dedicated engineering and innovation,” said Baranec, a member of IfA’s robotic adaptive optics program. “This system demonstrates how University of Â鶹´«Ã½ facilities continue to pioneer technologies that eventually make their way to the world’s largest telescopes and space missions.”

Hunting for habitable worlds

One of the first researchers to use the system is graduate student Guillaume Huber. He is conducting observations for NASA’s future , which will search for signs of life on planets around nearby stars. Huber is vetting a catalog of nearby stars that could host Earth-like planets.

“The Habitable Worlds Observatory will search for signs of life on planets orbiting other stars, but first we need to ensure those target stars don’t have close stellar companions,” Huber said. “Robo-AO-2’s ability to rapidly survey hundreds of targets makes it uniquely suited for this preparatory work.”

Advancing automation

New funding is driving the system even further. This year, the National Science Foundation and the Mt. Cuba Astronomical Foundation awarded $679,075 to fully automate Robo-AO-2. The NSF award will also support testing a new adaptive secondary mirror for the UH 2.2-meter telescope, led by IfA astronomer Mark Chun. This technology could significantly improve image quality for future ground-based observatories.

“The adaptive secondary mirror will allow us to correct atmospheric turbulence directly at the telescope’s secondary mirror,” Baranec said. “Robo-AO-2 will play a crucial role in testing and validating this technology.”

Training the next generation

For IfA, the project is also about training. Students gain rare hands-on experience with real instruments at the university’s own facilities. The UH 2.2-meter telescope serves as a crucial testbed where new instruments and techniques can be developed before deployment on larger facilities.

“Students are not just operating instruments—they’re helping to build and improve them,” Baranec said. “Those skills are invaluable for careers in astronomy and engineering.”

Astronomers from the University of Â鶹´«Ã½ (IfA) have uncovered the turbulent past of a distant red giant by listening to its celestial “song.” Subtle variations in the star’s brightness suggest that it potentially once collided and merged with another star, an explosive event that left it spinning rapidly. It now orbits a quiet black hole in the Gaia BH2 system.

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS), IfA astronomers detected faint “starquakes” rippling through the companion star of Gaia BH2, a black hole system first identified by the European Space Agency’s Gaia mission in 2023. Much like seismic waves reveal Earth’s inner layers, these stellar vibrations gave scientists a rare glimpse beneath the star’s surface, allowing them to measure its core properties with remarkable precision. The team’s findings were recently published in Astronomical Journal.

“Just like seismologists use earthquakes to study Earth’s interior, we can use stellar oscillations to understand what’s happening inside distant stars,” said IfA research scientist Daniel Hey, lead author of the study. “These vibrations told us something unexpected about this star’s history.”

Age-defying star

The biggest surprise came from the star’s makeup. It’s considered “alpha-rich”, which means it is packed with heavier elements usually found in much older stars, suggesting it should be ancient. However, when scientists studied its vibrations, they discovered it’s actually only about 5 billion years old, too young to have formed with those chemical traits.

“Young, alpha-rich stars are quite rare and puzzling,” explained Hey. “The combination of youth and ancient chemistry suggests this star didn’t evolve in isolation. It likely acquired extra mass from a companion, either through a merger or by absorbing material when the black hole formed.”

Faster than expected

The mystery deepens with long-term observations from ground-based telescopes showing the star rotates once every 398 days, much faster than expected for an isolated red giant of its age.

“If this rotation is real, it can’t be explained by the star’s birth spin alone,” said co-author Joel Ong, a NASA Hubble Fellow at IfA. “The star must have been spun up through tidal interactions with its companion, which further supports the idea that this system has a complex history.”

The team also examined Gaia BH3, another black hole system with an even more unusual companion star. Although models predicted that this star should show clear oscillations, none were detected, hinting that current theories about extremely metal-poor stars may need updating.

Both Gaia BH2 and BH3 are dormant black hole systems, meaning they aren’t feeding on their companion stars and therefore emit no X-rays. Their discovery through precise measurements of stellar motion is reshaping how astronomers understand black holes in our galaxy.

Peering deeper ahead

Future TESS observations of Gaia BH2 will give scientists a closer look at its stellar vibrations and may confirm whether it formed through a past merger, helping unravel how these quiet black hole pairs came to be.

Astronomers have captured one of the universe’s most dramatic moments—the instant a massive star exploded and the blast broke through the star’s surface. The rare event, observed with the European Southern Observatory’s Very Large Telescope, gave scientists an unprecedented look at a star’s final seconds. A University of Â鶹´«Ã½ astronomer was part of the international team that raced to record and study the supernova in real time.

For the first time, researchers were able to map the three-dimensional shape of a stellar explosion as it unfolded. Their discovery, published in , offers new clues about how giant stars live, die, and transform into supernovae that enrich the cosmos with the elements needed for life.

Chris Ashall, an assistant astronomer at the UH ²ÑÄå²Ô´Ç²¹ (IfA), was part of the global team that zeroed in on the stellar explosion known as SN 2024ggi. The supernova was first spotted in April 2024 in the nearby galaxy NGC 3621, 22 million light-years away in the constellation Hydra.

“As soon as the alert came in, we knew this was the kind of a relatively nearby explosion you might see once in a decade,” said Ashall. “If we could move fast enough, we had a chance to watch the blast wave literally breaking out of the star’s surface.”

Racing to capture observations

Within hours of the discovery, the international team submitted an urgent observation request to the European Southern Observatory. Ashall helped with this effort, prompting the Very Large Telescope in Chile to target the supernova just 26 hours after it was first spotted.

The team used a technique called spectropolarimetry, which measures how light of different colors is polarized, to reveal the three-dimensional shape of the exploding material. They discovered that the explosion was elongated, more like an olive than a sphere. As it expanded and hit surrounding gas, the blast began to flatten but kept the same orientation, hinting that many massive stars may collapse in the same way.

The dying star was a red supergiant about 12–15 times heavier than the Sun and roughly 500 times larger. Studying its shape offers new insight into how massive stars evolve and lose mass before they die.

“This shows what’s possible when you combine fast alerts, flexible telescopes, and a global team,” said Ashall.

Peering deeper

Ashall’s team at IfA is following the supernova with NASA’s James Webb Space Telescope. Early results show clumpy debris where new molecules form, helping create one of the most detailed 3D views ever of a massive star’s final moments.

The University of Â鶹´«Ã½ at ²ÑÄå²Ô´Ç²¹ helped inspire hundreds of keiki and community members at the 24th annual on October 19. Hosted by the (HSGC) in partnership with UH ²ÑÄå²Ô´Ç²¹â€™s and Hawaiian Electric, the free STEM event engaged attendees with hands-on activities and workshops highlighting space exploration, Earth science, biology, oceanography, rocketry, robotics and coding.

“This event is all about inspiring Â鶹´«Ã½â€™s students to dream big—just like Lacy did,â€� said Adria Fung, event coordinator and robotics education specialist with HSGC in the (SOEST). “He grew up right here in Honolulu, had a huge dream, and quite literally chased the stars. We want our students to see that even if their dreams feel far away, they can reach them by staying curious and never being afraid to explore. Lacy Veach Day celebrates discovery and the spirit of lifelong learning.â€�

Robots, fossils, rockets and more

This year featured 36 hands-on activities and displays led by more than 30 organizations including student groups from UH, community organizations and industry professionals. They featured hands-on learning in the fields of robotics, fossils, marine biology, rocketry, Hawaiian voyaging, cube satellites, architecture, pilot simulation, microscopes and more. Workshops offered opportunities to learn about indoor drones, robotics, telescopes, hybrid cars and meteorites.

“This was Aiea Intermediate School robotics team’s first Lacy Veach Day and the students had a real blast,â€� said Pete Miller, robotics coach at Aiea Intermediate School. “We brought several robots for the public to play around with in the robotics arena, getting coaching from our team members as needed, plus my students were able to visit the other exhibits–the most popular were the planetarium, the drone display and several of the UH engineering and science exhibits.â€�

Partnerships propel the event

Veach Day provides a unique opportunity for pre-service teachers to learn from other organizations about how they bring STEM to life, and build connections that might one day show up in their own classrooms.

“Volunteering at Lacy Veach Day was a valuable and rewarding experience for pre-service teachers in our teacher preparation program,â€� said Stacy George, faculty member at UH ²ÑÄå²Ô´Ç²¹ College of Education. “It provided my students with a rare opportunity to engage in community outreach, network with science organizations, interact with families, and even develop their own interest in science.â€�

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