TL;DR: NASA's Hubble Space Telescope revealed a giant star-cleared superbubble in a neighboring galaxy and a newly formed ten-sided wave around Saturn's south pole.
Two fresh releases from NASA's Hubble team show the observatory working both ends of its range — from deep-space stellar nurseries to weather patterns on a nearby giant planet. According to NASA’s Hubble Spies Superbubble Scene, published Sept. 3, 2026, Hubble captured a detailed portrait of nebula LHA 120-N44, or N44, in the Large Magellanic Cloud. According to NASA’s Hubble Tracks New Decagon Encircling Saturn’s South Pole, published Sept. 2, 2026, Hubble also tracked a large, ten-sided atmospheric wave encircling Saturn's south pole.
Both findings rely on years of Hubble imaging, and both remain under active study. Researchers say N44 offers a laboratory for timing stellar birth, while Saturn's new pattern offers a rare chance to watch a planetary-scale wave take shape.
N44 Puts Stellar Feedback On Display
The N44 portrait looks deep into the Large Magellanic Cloud, described by NASA as the most massive of the compact galaxies circling the Milky Way. The system lies only about 160,000 light-years from Earth, close enough in cosmic terms for Hubble to resolve crowded birthplaces of stars. N44 itself sits in the southern constellation Dorado.
What dominates the view, NASA explains, is contrast: an enormous cleared interior beside a thick envelope of dusty gas. The interior cavity measures about 210 by 140 light-years. Bright stars packed near its middle carved it out, driving off much of their natal material through forceful outflows and supernova blasts.
That expelled material did not simply vanish. It piled up and compacted at the edge of the cavity, building the luminous rim now surrounding the void. Fresh stars are condensing inside that compacted rim, which is why investigators consider N44 a natural experiment for stellar origins. Their central question is the duration between initial contraction of frigid clouds into compact clumps and the onset of fusion at the center of a newborn star.
A Census Of Nearly Half A Million Stars
The image behind the Sept. 3 announcement comes from observing program No. 14689, led by principal investigator Gouliermis. That program scanned N44 to count and characterize its stellar population, logging close to 500,000 points of light. The total includes objects physically inside the complex plus foreground stars that happen to lie along the same line of sight.
Roughly 30,000 of the cataloged objects are pre-main-sequence stars, meaning bodies that have not yet started converting hydrogen to helium in their cores. NASA credits Hubble's combination of sensitivity and sharp imaging for isolating those faint, young objects despite crowding.
Radiation plays a major role in the scene's appearance. Ultraviolet light from hefty stars energizes the surrounding envelope, making the gas shine and accentuating structure across the complex. Features across the broader N44 system were classified by astronomer Karl Henize during the 1950s.
One smaller structure draws particular attention near the upper-right portion of the frame. Designated N44F, it is an interstellar bubble inflated by the outflow from one hot, massive star. A previously issued Hubble close-up shows how that star's wind and radiation shaped the bubble wall and raised columns of dusty gas.
Why A Nearby Galaxy Matters For Early-Universe Science
Investigators say Hubble's detection of especially low-mass stars in the region creates a fresh opening for research. The Large Magellanic Cloud holds a smaller share of elements heavier than helium than the Milky Way, and the same is true of galaxies in the early universe.
That chemical similarity lets astronomers use N44 as a nearby stand-in for distant, youthful systems that are far harder to resolve. By measuring masses of newborn stars and the pace of their emergence in a sparse-heavy-element setting, scientists can test ideas about how stellar populations assembled when the cosmos was much younger. The Sept. 3 report, credited to ESA/Hubble text with media contact Claire Andreoli at NASA's Goddard Space Flight Center in Greenbelt, Maryland, frames those measurements as a step toward timing formation from start to finish.
Saturn Gains A Ten-Sided Southern Wave
Closer to home, Hubble found something never before recorded around Saturn's southern pole: a large, orderly, ten-sided wave. NASA calls it the first sizable, regularly shaped jet pattern detected in that hemisphere. It recalls the celebrated six-sided jet at Saturn's north pole, yet researchers stress that it is not a copy, and its recent development suggests a distinct atmospheric event unfolding on the ringed giant.
The result appeared Wednesday in the journal Science Advances. Reconstruction of several seasons of Hubble coverage, reaching back to 2023, showed faint signs of the configuration before it sharpened into a recognizable ten-sided form. That long-baseline coverage came from Hubble's Outer Planet Atmospheres Legacy program, known as OPAL, which has photographed the outer planets every year for more than ten years.
Study co-author and OPAL principal investigator Amy Simon, of NASA's Goddard Space Flight Center in Greenbelt, Maryland, said the team had never observed anything quite like it in the southern hemisphere, noting that the northern hexagon has appeared on every suitable look for more than four decades while the new feature seems to be gaining definition.
Ground Observers Spotted It First
Saturn's tilt controls what Earth-based telescopes can see, and the south polar region only recently tilted back into good view after years hidden from Earth. That seasonal shift allowed a worldwide network of ground-based planetary images to catch the first clue.
Lead author Agustín Sánchez-Lavega, a researcher at the University of the Basque Country in Spain, works with the Planetary Virtual Observatory Laboratory, a site that gathers contributed planetary pictures from observers globally. In that collection, Sánchez-Lavega together with amateur astronomers Trevor Barry and Jean-Paul Oger noticed a faint wavy band near the southern pole in 2024. More ground-based pictures from 2025 strengthened the impression of a ten-sided geometry.
Hubble then supplied confirmation and detail. From orbit, the telescope avoids blurring by Earth's air and can follow Saturn through complete rotations with high clarity and spatial precision. Sánchez-Lavega said researchers had hunted Hubble pictures since 1990 for a southern counterpart to the northern hexagon, given the apparent north-south symmetry of Saturn's jet system. Images from NASA's Cassini orbiter, which circled Saturn from 2004 through 2017, had shown no evidence of a durable structure of that kind, but Hubble records pinned the decagon's presence to at least 2023.
A Deep Structure, Not A Surface Wisp
The wave is embedded in one of Saturn's strong jet streams and reaches across multiple atmospheric layers. That vertical reach tells scientists it is more than a thin cloud marking. Its apparent location moves slightly with observing wavelength, because separate Hubble filters sample separate heights in Saturn's atmosphere.
Simon called the apparent youth of the structure its most compelling aspect and asked why it emerged now after no earlier detection. The authors say combined follow-up with Hubble and NASA's James Webb Space Telescope, alongside numerical modeling, will be needed to determine how it arose, how durable it may prove, and how it compares with the enduring northern hexagon.
The broader lesson, co-author Mike Wong of the University of California, Berkeley said, is the value of sustained monitoring. When OPAL began, the team anticipated unexpected finds without knowing their form, and many results depend not on a single exposure but on accumulated seasons of data. Regular coverage lets scientists chart seasonal shifts, follow transient storms, and pick out features that change gradually.
The observing plan now is to keep watching Saturn to learn whether the ten-sided wave locks into a durable, orderly state resembling the northern hexagon or keeps changing. Later measurements may clarify what powers the oscillation, what it discloses about circulation on giant planets across the solar system, and whether parallels exist with atmospheric behavior on Earth. Hubble, operating for more than three decades as a joint project of NASA and ESA, continues that long-duration watch from Goddard-managed operations.
What To Watch Next
For N44, the next work is analysis: converting star counts, colors, and brightness into timelines for collapse and ignition, plus distributions of birth masses in a low–heavy-element nursery. For Saturn, the next work is observational: repeated Hubble and Webb looks plus simulations to test formation ideas and longevity.
Together, the two Hubble updates illustrate a program still expanding its archive — counting infant stars one galaxy away while tracking a shifting polygon on a giant planet next door.