Media accreditation is open for the next launch to deliver NASA science investigations, supplies, and equipment to the International Space Station. This launch is the 33rd SpaceX commercial resupply services mission to the orbital laboratory for NASA and will liftoff on the company’s Falcon 9 rocket.

NASA and SpaceX are targeting no earlier than Thursday, Aug. 21, to launch the SpaceX Dragon spacecraft from Space Launch Complex-40 at Cape Canaveral Space Force Station in Florida.

Credentialing to cover prelaunch and launch activities is open to U.S. media. The application deadline for U.S. citizens is 11:59 p.m. EDT, Sunday, Aug. 3. All accreditation requests must be submitted online at:

https://media.ksc.nasa.gov

Credentialed media will receive a confirmation email upon approval. NASA’s media accreditation policy is available online. For questions about accreditation, or to request special logistical support, email: ksc-media-accreditat@mail.nasa.gov. For other questions, please contact NASA’s Kennedy Space Center newsroom at: 321-867-2468.

Para obtener información sobre cobertura en español en el Centro Espacial Kennedy o si desea solicitor entrevistas en español, comuníquese con Antonia Jaramillo o Messod Bendayan a: antonia.jaramillobotero@nasa.gov o messod.c.bendayan@nasa.gov.

Each resupply mission to the station delivers scientific investigations in the areas of biology and biotechnology, Earth and space science, physical sciences, and technology development and demonstrations. Cargo resupply from U.S. companies ensures a national capability to deliver scientific research to the space station, significantly increasing NASA’s ability to conduct new investigations aboard humanity’s laboratory in space.

In addition to food, supplies, and equipment for the crew, Dragon will deliver several new experiments, including bone-forming stem cells for studying bone loss prevention and materials to 3D print medical implants that could advance treatments for nerve damage on Earth. Dragon also delivers bioprinted liver tissue to study blood vessel development in microgravity and supplies to 3D print metal cubes in space.

For almost 25 years, humans have continuously lived and worked aboard the International Space Station, advancing scientific knowledge and demonstrating new technologies that enable us to prepare for human exploration of the Moon as we prepare for Mars.

Learn more about NASA’s commercial resupply missions at:

https://www.nasa.gov/station

-end-

Claire O’Shea
Headquarters, Washington
202-358-1100
claire.a.o’shea@nasa.gov

Stephanie Plucinsky / Steven Siceloff / Danielle Sempsrott
Kennedy Space Center, Fla.
321-876-2468
stephanie.n.plucinsky@nasa.gov / steven.p.siceloff@nasa.gov / danielle.c.sempsrott@nasa.gov

Sandra Jones
Johnson Space Center, Houston
281-483-5111
sandra.p.jones@nasa.gov

In a stretch of California’s Mojave Desert, NASA conducted a full-scale “dress rehearsal” to prepare how it will measure the noise generated by the X-59 quiet supersonic research aircraft.

The team behind the successful test flight series operates under NASA’s Commercial Supersonic Technology project. Beginning June 3 and concluding this week, researchers conducted a dry run for Phase 2 of NASA’s Quesst mission, when it will capture audio of the sonic thumps the X-59 will produce, rather than loud sonic booms associated with supersonic flight.

“The dress rehearsal was critical for us,” said Larry Cliatt, sub-project manager for the Quesst acoustic validation phase, who is based at NASA’s Armstrong Flight Research Center in Edwards, California. “It gave us the opportunity to run through every aspect of our operation, from flight planning to data collection. In between those activities, we practiced aircraft operations, setting up the Ground Recording Systems, meteorological data collecting, and refining control room procedures. We were able to fine-tune our timelines, improve communication across teams, and ensure that when we perform these test with the X-59 aircraft, everything will run smoothly.”

During the tests, at NASA Armstrong, an F-15B aircraft served as a stand-in for the X-59, flying faster than the speed of sound and making multiple passes over the Mojave sands. While it flew, researchers captured acoustic data using a linear array of ground recording systems spaced across miles of open desert, recorded weather readings, and measured the shock waves it generated.

For a supersonic aircraft like the F-15B, shock waves typically result in loud sonic booms, but the X-59 is designed to diffuse them in a way that will dramatically limit noise.

NASA’s Quesst mission aims to enable quiet supersonic flight over land using data from the X-59. The experimental aircraft will begin making its first flights this year – the first phase of Quesst.

But even before it takes to the air, the mission began its preparations for Phase 2 with the dry run, which focused on practicing under realistic test conditions and identifying issues before the official campaign begins, not collecting data from the F-15B.

Through Quesst’s development of the X-59, NASA will deliver design tools and technology for quiet supersonic airliners that will achieve the high speeds desired by commercial operators without disturbing people on the ground. NASA will also validate design tools through ground and flight testing, providing aircraft manufacturers the ability to explore new quiet supersonic concepts and have confidence that their resulting designs will meet requirements for quiet flight.

Most importantly, Quesst will gather data to understand community response to sounds generated during flight – key knowledge for a quiet supersonic future.

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NASA invites the public to participate as virtual guests in the launch of the agency’s SpaceX Crew-11 mission to the International Space Station.

NASA astronauts Zena Cardman and Mike Fincke, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui, and Roscosmos cosmonaut Oleg Platonov will launch aboard a SpaceX Dragon spacecraft to the orbiting laboratory. This is the first spaceflight for Cardman and Platonov, the fourth for Fincke, and the second for Yui.

NASA and SpaceX are targeting no earlier than 12:09 p.m. EDT, Thursday, July 31, for launch on the company’s Falcon 9 rocket from Launch Complex 39A at the agency’s Kennedy Space Center in Florida.

Members of the public can register to attend the launch virtually. Virtual guests will receive curated resources, interactive opportunities, mission updates, and a mission-specific collectible stamp for their virtual guest passport after liftoff.

Discover an exciting new way to collect and share passport stamps. Print one for your virtual guest passport and get an extra one, perfect for sharing or digital collecting. Don’t have a passport yet? Print one from the agency’s website and add Crew-11 to your collection.

For more information about the Crew-11 mission, visit:

https://www.nasa.gov/commercialcrew

The swirling spiral galaxy in this NASA/ESA Hubble Space Telescope image is NGC 3285B, which resides 137 million light-years away in the constellation Hydra (the Water Snake). Hydra has the largest area of the 88 constellations that cover the entire sky in a celestial patchwork. It’s also the longest constellation, stretching 100 degrees across the sky. It would take nearly 200 full Moons, placed side by side, to reach from one side of the constellation to the other.

NGC 3285B is a member of the Hydra I cluster, one of the largest galaxy clusters in the nearby universe. Galaxy clusters are collections of hundreds to thousands of galaxies bound to one another by gravity. The Hydra I cluster is anchored by two giant elliptical galaxies at its center. Each of these galaxies is about 150,000 light-years across, making them about 50% larger than our home galaxy, the Milky Way.

NGC 3285B sits on the outskirts of its home cluster, far from the massive galaxies at the center. This galaxy drew Hubble’s attention because it hosted a Type Ia supernova in 2023. Type Ia supernovae happen when a type of condensed stellar core called a white dwarf detonates, igniting a sudden burst of nuclear fusion that briefly shines about 5 billion times brighter than the Sun. The supernova, named SN 2023xqm, is visible here as a blueish dot on the left edge of the galaxy’s disk.

Hubble observed NGC 3285B as part of an observing program that targeted 100 Type Ia supernovae. By viewing each of these supernovae in ultraviolet, optical, and near-infrared light, researchers aim to disentangle the effects of distance and dust, both of which can make a supernova appear redder than it actually is. This program will help refine cosmic distance measurements that rely on observations of Type Ia supernovae.

Text Credit: ESA/Hubble

Media Contact:

Claire Andreoli (claire.andreoli@nasa.gov)
NASA’s Goddard Space Flight Center, Greenbelt, MD

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Senegal signed the Artemis Accords Thursday during a ceremony hosted by NASA at the agency’s headquarters in Washington, becoming the latest nation to commit to the responsible exploration of space for all humanity.

“Following a meeting between Senegal President Faye and President Trump, today, NASA built upon the strong relations between our two nations as the Senegalese Agency for Space Studies signed the Artemis Accords,” said acting NASA Administrator Sean Duffy. “With Senegal as the 56th signatory, I am proud to further President Trump’s strong legacy of global cooperation in space.”

Director General of the Senegalese space agency (ASES) Maram Kairé signed the Artemis Accords on behalf of Senegal. Jonathan Pratt, senior bureau official for African Affairs at the U.S. Department of State, and Abdoul Wahab Haidara, ambassador of Senegal to the United States, also participated in the event.

“Senegal’s adherence to the Artemis Accords reflects our commitment to a multilateral, responsible, and transparent approach to space,” said Kairé. “This signature marks a meaningful step in our space diplomacy and in our ambition to contribute to the peaceful exploration of outer space.”

The Artemis Accords signing ceremony took place two weeks after President Trump’s meeting in Washington with Senegal’s President Bassirou Diomaye Faye and other countries of Africa focused on U.S.-Africa engagement.

Astronomers from Senegal have supported NASA missions by participating in multiple observations when asteroids or planets pass in front of stars, casting shadows on Earth. In 2021, NASA also collaborated with Kairé and a group of astronomers for a ground observation campaign in Senegal. As the asteroid Orus passed in front of a star, they positioned telescopes along the path of the asteroid’s shadow to estimate its shape and size. NASA’s Lucy spacecraft will approach Orus in 2028, as part of its mission to explore Jupiter’s Trojan asteroids.

In 2020, during the first Trump Administration, the United States, led by NASA and the U.S. Department of State, joined with seven other founding nations to establish the Artemis Accords, responding to the growing interest in lunar activities by both governments and private companies.

The accords introduced the first set of practical principles aimed at enhancing the safety, transparency, and coordination of civil space exploration on the Moon, Mars, and beyond.

Signing the Artemis Accords means to explore peaceably and transparently, to render aid to those in need, to ensure unrestricted access to scientific data that all of humanity can learn from, to ensure activities do not interfere with those of others, to preserve historically significant sites and artifacts, and to develop best practices for how to conduct space exploration activities for the benefit of all.

More countries are expected to sign the Artemis Accords in the months and years ahead, as NASA continues its work to establish a safe, peaceful, and prosperous future in space.

Learn more about the Artemis Accords at:

https://www.nasa.gov/artemis-accords

-end-

Bethany Stevens / Elizabeth Shaw
Headquarters, Washington
202-358-1600
bethany.c.stevens@nasa.gov / elizabeth.a.shaw@nasa.gov

The Bumper V-2 launches from Cape Canaveral in this July 24, 1950, photo. In the 75 years since this milestone, this facility has seen thousands of rockets take to the skies, destined for Earth orbit, the Moon, planets, and even beyond. From Cape Canaveral and from NASA’s Kennedy Space Center in Florida nearby, astronauts launched on the first pioneering crewed missions, headed for Moon landings, and helped to build the International Space Station.

NASA Kennedy, a premier multi-user spaceport with about 100 private-sector partners and nearly 250 partnership agreements, is still the agency’s main launch site. NASA’s SpaceX Crew-11 mission, part of the agency’s Commercial Crew Program, will launch from NASA Kennedy no earlier than 12:09 p.m. EDT, Thursday, July 31. The Crew-11 mission members – NASA astronauts Zena Cardman and Mike Fincke, JAXA (Japan Aerospace Exploration Agency) astronaut Kimiya Yui, and Roscosmos cosmonaut Oleg Platonov – are in crew quarantine before their voyage to the orbital laboratory.

Image credit: NASA

A technology called Dynamic Targeting could enable spacecraft to decide, autonomously and within seconds, where to best make science observations from orbit.

In a recent test, NASA showed how artificial intelligence-based technology could help orbiting spacecraft provide more targeted and valuable science data. The technology enabled an Earth-observing satellite for the first time to look ahead along its orbital path, rapidly process and analyze imagery with onboard AI, and determine where to point an instrument. The whole process took less than 90 seconds, without any human involvement.

Called Dynamic Targeting, the concept has been in development for more than a decade at NASA’s Jet Propulsion Laboratory in Southern California. The first of a series of flight tests occurred aboard a commercial satellite in mid-July. The goal: to show the potential of Dynamic Targeting to enable orbiters to improve ground imaging by avoiding clouds and also to autonomously hunt for specific, short-lived phenomena like wildfires, volcanic eruptions, and rare storms.

“The idea is to make the spacecraft act more like a human: Instead of just seeing data, it’s thinking about what the data shows and how to respond,” says Steve Chien, a technical fellow in AI at JPL and principal investigator for the Dynamic Targeting project. “When a human sees a picture of trees burning, they understand it may indicate a forest fire, not just a collection of red and orange pixels. We’re trying to make the spacecraft have the ability to say, ‘That’s a fire,’ and then focus its sensors on the fire.”

Avoiding Clouds for Better Science

This first flight test for Dynamic Targeting wasn’t hunting specific phenomena like fires — that will come later. Instead, the point was avoiding an omnipresent phenomenon: clouds.

Most science instruments on orbiting spacecraft look down at whatever is beneath them. However, for Earth-observing satellites with optical sensors, clouds can get in the way as much as two-thirds of the time, blocking views of the surface. To overcome this, Dynamic Targeting looks 300 miles (500 kilometers) ahead and has the ability to distinguish between clouds and clear sky. If the scene is clear, the spacecraft images the surface when passing overhead. If it’s cloudy, the spacecraft cancels the imaging activity to save data storage for another target.

“If you can be smart about what you’re taking pictures of, then you only image the ground and skip the clouds. That way, you’re not storing, processing, and downloading all this imagery researchers really can’t use,” said Ben Smith of JPL, an associate with NASA’s Earth Science Technology Office, which funds the Dynamic Targeting work. “This technology will help scientists get a much higher proportion of usable data.”

How Dynamic Targeting Works

The testing is taking place on CogniSAT-6, a briefcase-size CubeSat that launched in March 2024. The satellite — designed, built, and operated by Open Cosmos — hosts a payload designed and developed by Ubotica featuring a commercially available AI processor. While working with Ubotica in 2022, Chien’s team conducted tests aboard the International Space Station running algorithms similar to those in Dynamic Targeting on the same type of processor. The results showed the combination could work for space-based remote sensing.

Since CogniSAT-6 lacks an imager dedicated to looking ahead, the spacecraft tilts forward 40 to 50 degrees to point its optical sensor, a camera that sees both visible and near-infrared light. Once look-ahead imagery has been acquired, Dynamic Targeting’s advanced algorithm, trained to identify clouds, analyzes it. Based on that analysis, the Dynamic Targeting planning software determines where to point the sensor for cloud-free views. Meanwhile, the satellite tilts back toward nadir (looking directly below the spacecraft) and snaps the planned imagery, capturing only the ground.

This all takes place in 60 to 90 seconds, depending on the original look-ahead angle, as the spacecraft speeds in low Earth orbit at nearly 17,000 mph (7.5 kilometers per second).

What’s Next

With the cloud-avoidance capability now proven, the next test will be hunting for storms and severe weather — essentially targeting clouds instead of avoiding them. Another test will be to search for thermal anomalies like wildfires and volcanic eruptions. The JPL team developed unique algorithms for each application.

“This initial deployment of Dynamic Targeting is a hugely important step,” Chien said. “The end goal is operational use on a science mission, making for a very agile instrument taking novel measurements.”

There are multiple visions for how that could happen — possibly even on spacecraft exploring the solar system. In fact, Chien and his JPL colleagues drew some inspiration for their Dynamic Targeting work from another project they had also worked on: using data from ESA’s (the European Space Agency’s) Rosetta orbiter to demonstrate the feasibility of autonomously detecting and imaging plumes emitted by comet 67P/Churyumov-Gerasimenko.

On Earth, adapting Dynamic Targeting for use with radar could allow scientists to study dangerous extreme winter weather events called deep convective ice storms, which are too rare and short-lived to closely observe with existing technologies. Specialized algorithms would identify these dense storm formations with a satellite’s look-ahead instrument. Then a powerful, focused radar would pivot to keep the ice clouds in view, “staring” at them as the spacecraft speeds by overhead and gathers a bounty of data over six to eight minutes.

Some ideas involve using Dynamic Targeting on multiple spacecraft: The results of onboard image analysis from a leading satellite could be rapidly communicated to a trailing satellite, which could be tasked with targeting specific phenomena. The data could even be fed to a constellation of dozens of orbiting spacecraft. Chien is leading a test of that concept, called Federated Autonomous MEasurement, beginning later this year.

News Media Contact

Melissa Pamer
Jet Propulsion Laboratory, Pasadena, Calif.
626-314-4928
melissa.pamer@jpl.nasa.gov

2025-094

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NASA’s Hubble, Chandra Spot Rare Type of Black Hole Eating a Star

NASA’s Hubble Space Telescope and NASA’s Chandra X-ray Observatory have teamed up to identify a new possible example of a rare class of black holes. Called NGC 6099 HLX-1, this bright X-ray source seems to reside in a compact star cluster in a giant elliptical galaxy.

Just a few years after its 1990 launch, Hubble discovered that galaxies throughout the universe can contain supermassive black holes at their centers weighing millions or billions of times the mass of our Sun. In addition, galaxies also contain as many as millions of small black holes weighing less than 100 times the mass of the Sun. These form when massive stars reach the end of their lives.

Far more elusive are intermediate-mass black holes (IMBHs), weighing between a few hundred to a few 100,000 times the mass of our Sun. This not-too-big, not-too-small category of black holes is often invisible to us because IMBHs don’t gobble as much gas and stars as the supermassive ones, which would emit powerful radiation. They have to be caught in the act of foraging in order to be found. When they occasionally devour a hapless bypassing star — in what astronomers call a tidal disruption event— they pour out a gusher of radiation.

The newest probable IMBH, caught snacking in telescope data, is located on the galaxy NGC 6099’s outskirts at approximately 40,000 light-years from the galaxy’s center, as described in a new study in the Astrophysical Journal. The galaxy is located about 450 million light-years away in the constellation Hercules.

Astronomers first saw an unusual source of X-rays in an image taken by Chandra in 2009. They then followed its evolution with ESA’s XMM-Newton space observatory.

“X-ray sources with such extreme luminosity are rare outside galaxy nuclei and can serve as a key probe for identifying elusive IMBHs. They represent a crucial missing link in black hole evolution between stellar mass and supermassive black holes,” said lead author Yi-Chi Chang of the National Tsing Hua University, Hsinchu, Taiwan.

X-ray emission coming from NGC 6099 HLX-1 has a temperature of 3 million degrees, consistent with a tidal disruption event. Hubble found evidence for a small cluster of stars around the black hole. This cluster would give the black hole a lot to feast on, because the stars are so closely crammed together that they are just a few light-months apart (about 500 billion miles).

The suspected IMBH reached maximum brightness in 2012 and then continued declining to 2023. The optical and X-ray observations over the period do not overlap, so this complicates the interpretation. The black hole may have ripped apart a captured star, creating a plasma disk that displays variability, or it may have formed a disk that flickers as gas plummets toward the black hole.

“If the IMBH is eating a star, how long does it take to swallow the star’s gas? In 2009, HLX-1 was fairly bright. Then in 2012, it was about 100 times brighter. And then it went down again,” said study co-author Roberto Soria of the Italian National Institute for Astrophysics (INAF). “So now we need to wait and see if it’s flaring multiple times, or there was a beginning, there was peak, and now it’s just going to go down all the way until it disappears.”

The IMBH is on the outskirts of the host galaxy, NGC 6099, about 40,000 light-years from the galaxy’s center. There is presumably a supermassive black hole at the galaxy’s core, which is currently quiescent and not devouring a star.

Black Hole Building Blocks

The team emphasizes that doing a survey of IMBHs can reveal how the larger supermassive black holes form in the first place. There are two alternative theories. One is that IMBHs are the seeds for building up even larger black holes by coalescing together, since big galaxies grow by taking in smaller galaxies. The black hole in the middle of a galaxy grows as well during these mergers. Hubble observations uncovered a proportional relationship: the more massive the galaxy, the bigger the black hole. The emerging picture with this new discovery is that galaxies could have “satellite IMBHs” that orbit in a galaxy’s halo but don’t always fall to the center.

Another theory is that the gas clouds in the middle of dark-matter halos in the early universe don’t make stars first, but just collapse directly into a supermassive black hole. NASA’s James Webb Space Telescope’s discovery of very distant black holes being disproportionately more massive relative to their host galaxy tends to support this idea.

However, there could be an observational bias toward the detection of extremely massive black holes in the distant universe, because those of smaller size are too faint to be seen. In reality, there could be more variety out there in how our dynamic universe constructs black holes. Supermassive black holes collapsing inside dark-matter halos might simply grow in a different way from those living in dwarf galaxies where black-hole accretion might be the favored growth mechanism.

“So if we are lucky, we’re going to find more free-floating black holes suddenly becoming X-ray bright because of a tidal disruption event. If we can do a statistical study, this will tell us how many of these IMBHs there are, how often they disrupt a star, how bigger galaxies have grown by assembling smaller galaxies.” said Soria.

The challenge is that Chandra and XMM-Newton only look at a small fraction of the sky, so they don’t often find new tidal disruption events, in which black holes are consuming stars. The Vera C. Rubin Observatory in Chile, an all-sky survey telescope from the U.S. National Science Foundation and the Department of Energy, could detect these events in optical light as far as hundreds of millions of light-years away. Follow-up observations with Hubble and Webb can reveal the star cluster around the black hole.

The Hubble Space Telescope has been operating for more than three decades and continues to make ground-breaking discoveries that shape our fundamental understanding of the universe. Hubble is a project of international cooperation between NASA and ESA (European Space Agency). NASA’s Goddard Space Flight Center in Greenbelt, Maryland, manages the telescope and mission operations. Lockheed Martin Space, based in Denver, also supports mission operations at Goddard. The Space Telescope Science Institute in Baltimore, which is operated by the Association of Universities for Research in Astronomy, conducts Hubble science operations for NASA.

Related Images & Videos

NGC 6099 (Hubble + Chandra)

A Hubble Space Telescope image of a pair of galaxies: NGC 6099 (lower left) and NGC 6098 (upper right). The purple blob depicts X-ray emission from a compact star cluster. The X-rays are produced by an intermediate-mass black hole tearing apart a star.

NGC 6099 (Hubble)

A Hubble Space Telescope image of a pair of galaxies: NGC 6099 (lower left) and NGC 6098 (upper right). The white dot labeled HLX-1 is the visible-light component of the location of a compact star cluster where an intermediate-mass black hole is tearing apart a star.

NGC 6099 Compass Image

This compass image shows two elliptical galaxies, NGC 6098 at upper right and NGC 6099 at lower left. The fuzzy purple blob at bottom center shows X-ray emission produced by an intermediate-mass black hole tearing apart a star. 

HLX-1 Illustration

This sequence of artistic illustrations, from upper left to bottom right, shows how a black hole in the core of a star cluster captures a bypassing star and gravitationally shreds it until there is an explosion, seen in the outskirts of the host galaxy.

HLX-1 Animation

This video is an illustration of an intermediate-mass black hole capturing and gravitationally shredding a star. It begins by zooming into a pair of galaxies. The galaxy at lower left, NGC 6099, contain a dense star cluster at center. The video then zooms into the heart of the cl…

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A century-old hypothesis that Betelgeuse, the 10th brightest star in our night sky, is orbited by a very close companion star was proved true by a team of astrophysicists led by a scientist at NASA’s Ames Research Center in California’s Silicon Valley.

The research published in The Astrophysical Journal Letters in the paper “Probable Direct Imaging Discovery of the Stellar Companion to Betelgeuse.”

Fluctuations in the brightness and measured velocity of Betelgeuse, the closest red supergiant star to Earth, had long presented clues that it may have a partner, but the bigger star’s intense glow made direct observations of any fainter neighbors nearly impossible.

Two recent studies by other teams of astronomers reignited the companion star hypothesis by using more than 100 years of Betelgeuse observations to provide predictions of the companion’s location and brightness.

If the smaller star did exist, the location predictions suggested that scientists had a window of just a few months to observe the companion star at its widest separation from Betelgeuse, as it orbited near the visible edge of the supergiant. After that, they would have to wait another three years for it to orbit to the other side and again leave the overpowering glow of its larger companion.

Searches for the companion were initially made using space-based telescopes, because observing through Earth’s atmosphere can blur images of astronomical objects. But these efforts did not detect the companion.

Steve Howell, a senior research scientist at Ames, recognized the ground-based Gemini North telescope in Hawai’i, one of the largest in the world, paired with a special, high-resolution camera built by NASA, had the potential to directly observe the close companion to Betelgeuse, despite the atmospheric blurring.

Officially called the ‘Alopeke speckle instrument, the advanced imaging camera let them obtain many thousands of short exposures to measure the atmospheric interference in their data and remove it with detailed image processing, providing an image of Betelgeuse and its companion.

Howell’s team detected the very faint companion star right where it was predicted to be, orbiting very close to the outer edge of Betelgeuse.

“I hope our discovery excites other astrophysicists about the robust power of ground-based telescopes and speckle imagers – a key to opening new observational windows,” said Howell. “This can help unlock the great mysteries in our universe.”

To start, this discovery of a close companion to Betelgeuse may explain why other similar red supergiant stars undergo periodic changes in their brightness on the scale of many years.

Howell plans to continue observations of Betelgeuse’s stellar companion to better understand its nature. The companion star will again return to its greatest separation from Betelgeuse in November 2027, a time when it will be easiest to detect.

Having found the long-anticipated companion star, Howell turned to giving it a name. The traditional star name “Betelgeuse” derives from Arabic, meaning “the hand of al-Jawza’,” a female figure in old Arabian legend. Fittingly, Howell’s team named the orbiting companion “Siwarha,” meaning “her bracelet.”

The NASA–National Science Foundation Exoplanet Observational Research Program (NN-EXPLORE) is a joint initiative to advance U.S. exoplanet science by providing the community with access to cutting-edge, ground-based observational facilities. Managed by NASA’s Exoplanet Exploration Program, NN-EXPLORE supports and enhances the scientific return of space missions such as Kepler, TESS (Transiting Exoplanet Survey Satellite), Hubble Space Telescope, and James Webb Space Telescope by enabling essential follow-up observations from the ground—creating strong synergies between space-based discoveries and ground-based characterization. NASA’s Exoplanet Exploration Program is located at the agency’s Jet Propulsion Laboratory.

To learn more about NN-EXPLORE, visit:

https://exoplanets.nasa.gov/exep/NNExplore/overview

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