Astronomers at the University of Hawaiʻi have precisely measured the age of a nearby Sun-like star and its unusual companion, known as a brown dwarf, an object that falls between a planet and a star. The discovery offers new clues into how brown dwarfs grow and change over time.

Using the on Maunakea, the team from the 糖心视频 (IfA) studied the HR 7672 system, composed of a Sun-like star and a faint brown dwarf companion. With an instrument called the Keck Planet Finder, they tracked tiny five-minute pulsationss in the star鈥檚 light and used them to estimate its age to be about 2.3 billion years. The study has been recently published in .

Because the brown dwarf formed at the same time as the star, the star鈥檚 age also reveals the companion鈥檚 age, giving researchers a rare chance to check if their models of how brown dwarfs cool throughout time are correct.

“This is like finally having a reliable clock for an object we鈥檝e been trying to understand for years,” said IfA Parrent Fellow Yaguang Li, who led the study. “It really helps us place evolutionary models under stringent tests and determine which physical ingredients are correct.”

Shaping discovery

For more than two decades, the HR 7672 system has helped shape how astronomers study brown dwarfs. Its companion, HR 7672B, was discovered in 2002 and was one of the first brown dwarfs ever directly imaged around a Sun-like star using adaptive optics (AO), a technology that sharpens images blurred by Earth鈥檚 atmosphere. Those early observations helped reveal how rare brown dwarfs are around Sun-like stars at close orbital distances.

Brown dwarfs do not sustain the same energy-producing reactions as stars. Instead, they slowly cool and fade over time. But testing how that happens has been difficult, in part because scientists rarely know their exact ages.

With this new measurement, paired with what is already known about the object鈥檚 energy output and mass, HR 7672B now stands out as a key reference point. The team compared their findings with several models and found the closest match with newer theories that better describe what鈥檚 happening inside these objects.

Full circle

The work highlights the long impact of the at IfA. More than 20 years ago, then-fellow Michael Liu discovered HR 7672B using Keck AO. Today, Li, the current Parrent Fellow, is building on that work with this new high-precision age-dating of the same system.

“HR 7672B was one of the first discoveries I made as a Parrent Fellow when I came to 糖心视频,” said Liu, IfA faculty member and co-author of the study. “It鈥檚 exciting to see new work from another Parrent Fellow make this object even more valuable for understanding how brown dwarfs evolve.”

Astronomers using the have taken a major step in understanding the distant planet Uranus. By combining data from Keck Observatory with the Hubble Space Telescope and James Webb Space Telescope, researchers created the first complete picture of how light reflects off Uranus鈥檚 faint outer rings.

The results reveal two very different stories. One ring appears to be made of tiny grains of water ice, likely chipped off a small moon. The other is darker and rocky, mixed with carbon-rich material. Together, they show how collisions and impacts continue to shape the planet鈥檚 ring system.

The findings offer new clues about how planets and their moons form and change throughout time.

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University of Hawaiʻi President Emeritus David Lassner and his team—including Vice President for Information Technology Garret Yoshimi and Director for Network Infrastructure Chris Zane—have been awarded the Corporation for Education Network Initiatives in California . The award recognizes more than 35 years of visionary leadership in connecting Hawaiʻi and the broader Pacific to the global research community.

Transforming science, education

Since establishing the first international internet connection to Australia via Hawaiʻi in 1989, the 糖心视频 team has fundamentally transformed global science and education. Their efforts in securing high-capacity networking for the premier astronomical observatories on Maunakea and Haleakal膩 have supported over $1 billion in scientific investment. The data transmitted through these connections contributed directly to two Nobel Prizes in Physics, including discoveries regarding the accelerating expansion of the universe and supermassive black holes.

Beyond these technical milestones, the 糖心视频 team鈥檚 work is deeply rooted in a commitment to Pacific Island communities. By expanding ultra-high bandwidth networks, they have ensured that remote islands on the front lines of climate change have equal access to vital global research resources.

“The University of Hawaiʻi‘s geographic position in the middle of the Pacific is only part of the story; what truly makes today’s Pacific Wave (a high-capacity network) connectivity possible is the people,” said Jonah Keough, managing director of Pacific Wave. “David, Garret and Chris understand that networks are built on relationships as much as fiber.”

Connecting through fiber, light

Lassner has compared this modern digital connectivity to traditional Polynesian wayfinding. Having sailed aboard 贬艒办奴濒别ʻ补鈥檚 Worldwide Voyage, Lassner noted that just as navigators connected Pacific peoples using stars, 糖心视频 is connecting them through fiber and light.

“To me, that’s what the World Wide Voyage and m膩lama honua (to care for our Earth) stand for鈥攕ustainability, Indigenous-serving education, research and our service to the community,” Lassner said. “It’s an incredible opportunity to do exactly what the University of Hawaiʻi is supposed to be doing.”

The award will be formally presented at CENIC鈥檚 “The Right Connection” conference in Monterey, California, March 31鈥揂pril 1, 2026.

AstroDay West 2025 brought a wave of excitement to Kona Commons as crowds gathered around science booths, telescopes and live demonstrations. The University of Hawaiʻi (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

糖心视频ors lined up to use a special solar telescope to safely view details on the sun鈥檚 surface. Nearby booths showed how stars form, how weather shapes our islands and how scientists observe the sky from Hawaiʻi鈥檚 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-Hawaiʻi Telescope, TMT International Observatory, NASA Solar System Ambassadors and the 糖心视频 Hilo .

A new chapter in automated astronomy has begun on Maunakea. The University of Hawaiʻi (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鈥檚 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鈥檚 robotic adaptive optics program. “This system demonstrates how University of Hawaiʻi 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鈥檚 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鈥檛 have close stellar companions,” Huber said. “Robo-AO-2鈥檚 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 糖心视频 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鈥檚 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鈥檚 own facilities. The 糖心视频 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鈥攖hey鈥檙e helping to build and improve them,” Baranec said. “Those skills are invaluable for careers in astronomy and engineering.”

High atop Maunakea, employees from the University of Hawaiʻi at Hilo are part of the dedicated team keeping observatory operations running smoothly, from clearing roads to public safety and supporting scientists at 14,000 feet.

Their behind-the-scenes efforts make it possible to advance world-class astronomy all while caring for the mountain鈥檚 cultural and natural resources.

A groundbreaking new instrument that lets astronomers see deeper into space than ever before using a single telescope was brought to life with help from a University of Hawaiʻi at 惭腻苍辞补 faculty member. Installed on the atop Maunakea, the first-of-its-kind device set a new benchmark for how scientists study distant stars and planets.

The instrument, called a photonic lantern, separates starlight into multiple channels, like breaking a musical chord into individual notes, allowing computers to rebuild an ultra-clear image. It鈥檚 part of a new instrument called FIRST-PL, developed and led by 糖心视频 and the Paris Observatory, and installed on the advanced optics platform (Subaru Coronagraphic Extreme Adaptive Optics) at .

“What excites me most is that this instrument blends cutting-edge photonics with the precision engineering done here in Hawaiʻi,” said S茅bastien Vievard, a faculty member from the 糖心视频 Space Science and Engineering Initiative (SSEI) a joint program of the 糖心视频 惭腻苍辞补 and . “It shows how collaboration across the world, and across disciplines, can literally change the way we see the cosmos.”

Sharper cosmic views

The breakthrough, published in , used the new setup to study a nearby star called beta Canis Minoris and revealed that its fast-spinning gas disk is unexpectedly lopsided, a detail never seen until now.

“This device splits the starlight according to its patterns of fluctuation, keeping subtle details that are otherwise lost. By reassembling the measurements of the outputs, we could reconstruct a very high-resolution image of a disk around a nearby star,” said Yoo Jung Kim, a graduate student at UCLA, and lead author on the study.

The international team included researchers from 糖心视频, UCLA, the Paris Observatory, the University of Sydney and Subaru Telescope.

Hawaiʻi鈥檚 space future

The achievement marks a milestone for 糖心视频鈥檚 new Space Science and Engineering Initiative, which launched its first engineering courses at 糖心视频 Hilo in fall 2024. The initiative aims to position Hawaiʻi as a global hub for space research, technology development, and workforce training. Vievard, one of the program鈥檚 founding faculty members, is helping to lead this new academic path that blends classroom learning with hands-on engineering experience.

The University of Hawaiʻi Board of Regents approved the creation of a permitted interaction group at its September 18 meeting to examine possible changes to the 糖心视频 System鈥檚 leadership structures, which oversee the 10 campuses statewide. The decision came after a presentation by 糖心视频 President Wendy Hensel outlining the opportunities and challenges of restructuring the 10-campus system.

The options under consideration include separating 糖心视频 惭腻苍辞补 leadership from the 糖心视频 System, as the 糖心视频 President currently oversees both the system and non-academic functions at 糖心视频 惭腻苍辞补, and integrating the community colleges more fully with the other three four-year campuses under systemwide administration.

The State of Hawaiʻi鈥檚 Sunshine Law governing open public meetings allows a public board to appoint a group consisting of less than a quorum of its members to investigate matters for the board. After the group undertakes its assigned task, its findings and recommendations must be presented to the board at a public meeting, and the board cannot act on any recommendations until a subsequent public meeting.

The regents appointed to the group are Vice Chair Mike Miyahira, Vice Chair Joshua Faumuina, Regent Neil Abercrombie, Regent Diane Paloma, and Regent Laurie Tochiki.

Maunakea permitted interaction group

In August, the regents approved another permitted interaction group to investigate the status of the transition of Maunakea stewardship from 糖心视频 to the Mauna Kea Stewardship and Oversight Authority, by July 1, 2028, pursuant to Act 255 (2021). The members of that group are Vice Chair Miyahira, Regent Wayne Higaki, Chair Gabe Lee, Regent Abercrombie and Regent Lauren Akitake.

The University of Hawaiʻi at Hilo (CMS) is advancing environmental stewardship on the mauna by replacing underground fuel storage tanks (USTs) at Halep艒haku, the mid-level facilities, with a modern system. A draft Environmental Assessment (EA) is being prepared under the oversight of the Maunakea Joint Management Committee, a partnership between CMS and the Mauna Kea Stewardship Oversight Authority (MKSOA).

糖心视频 is removing the USTs to meet a 2028 state regulatory deadline (Hawaiʻi Administrative Rules Chapter 11-280.1-21). Under the state rule, any tanks built before August 9, 2013, must be upgraded with extra safety protection by July 15, 2028. If they are not upgraded by then, they must be permanently shut down.

The project would replace three underground fuel tanks and buried fuel lines with two smaller, above-ground double-wall tanks. The new tanks would sit on a concrete pad with built-in pumps and a containment berm. This reduces the facility footprint from about 1,945 square feet to 322 square feet and lowers fuel storage capacity from 18,000 gallons to 6,000 gallons.

Fuel stored at Halep艒haku is vital for snow plows and heavy machinery that keep Maunakea鈥檚 roads clear and safe. Reliable access supports public safety, cultural practitioners and observatory staff. Storing fuel on the mauna also reduces emissions by limiting the number of trips needed to haul fuel up the mountain.

“Fuel storage is critical for keeping Maunakea鈥檚 roads safe and accessible during weather events and natural disasters,” said Greg Chun, executive director of CMS. “Following publication of the draft EA, we look forward to gathering public input so this project reflects both essential needs and our shared commitment to stewardship.”

Initial outreach efforts

CMS has hired Sustainable Resources Group International, Inc. to prepare the draft EA. The environmental consulting firm is assessing the project site, studying potential impacts, and conducting a Ka Paʻakai analysis. As part of this work, it is reaching out to stakeholder agencies and individuals with knowledge of Native Hawaiian traditional and customary practices connected to the area.

The project area is in a previously disturbed utilities yard and is not known to be used by cultural practitioners or visitors. One m膩mane tree will be removed, though 40 new trees have already been planted nearby as part of restoration efforts. No historic sites will be directly affected. An archaeological monitor will be present during ground work.

“True stewardship of Maunakea requires laulima, working together with the community,” said John De Fries, executive director of MKSOA. “As this process advances, there will be opportunities for manaʻo from the public to help guide this project with respect and responsibility.”

When the draft EA is published in the Hawaiʻi Office of Planning and Sustainable Development鈥檚 Environmental Notice, the public will have 30 days to provide comments. Community members, cultural practitioners, and other stakeholders are invited to share their perspectives to help shape the final decisions. All feedback will be reviewed by the project team, and adjustments to the Proposed Action may be made based on the input received.