Astronomers have identified what appears to be the largest rotating structure in the known universe, a finding that could reshape our understanding of the “cosmic web” and the role of dark matter in its formation [[1]]. The colossal filament, detected through observations with the MeerKAT telescope in South Africa, spans 50 million light-years and contains hundreds of galaxies [[2]]. This revelation, published this week in *The Astrophysical Journal Letters*, offers a rare glimpse into the dynamics of large-scale structures and may provide key insights into galactic evolution [[3]].
Astronomers have announced the discovery of what appears to be the largest rotating cosmic structure ever observed. The finding offers new insights into the “cosmic web” – the large-scale structure of the universe.
Located approximately 140 million light-years away, the colossal filament consists of hundreds of galaxies, dense gas clouds, and what is believed to be dark matter, which makes up an estimated 27% of the universe. The structure’s rotation was detected using the MeerKAT radio telescope in South Africa, a system comprised of 64 interconnected dish antennas.
A 50 MILLION LIGHT-YEAR LONG COSMIC THREAD
The filament’s dimensions are staggering. It stretches 50 million light-years in length and 117,000 light-years in width. For context, our own Milky Way galaxy is only 100,000 light-years across, meaning this structure is hundreds of times larger.
Researchers determined the filament is rotating by observing that galaxies on opposite sides of its axis are moving in opposite directions. Calculations indicate the entire structure spins at approximately 396,000 kilometers per hour.
“The universe has a large-scale structure – the cosmic web – which is made up of clusters of galaxies, voids, and filaments,” explained Madalina Tudorache, an astrophysicist at Cambridge University. This discovery provides a detailed look at one of the most significant components of that web.
The newly observed filament contains roughly 300 galaxies of varying sizes.
DARK MATTER AND GALAXIES SPIN LIKE A GIGANTIC “TEACUP”
Lyla Jung, an astrophysicist at Oxford University and co-author of the study, likened the massive structure to a fairground “teacup” ride. “Each galaxy is spinning around its own axis, just like the individual teacups,” she said. “At the same time, the entire filament is rotating as a whole, like the platform.”
This makes it the largest rotating cosmic structure directly detected to date. The finding could help refine models of how dark matter influences the formation and evolution of galaxies.
EXPLORING THE LARGEST PIECES OF THE COSMIC WEB
Astrofizikçiler are studying the universe at a wide range of scales, from the smallest particles to the largest structures. “We are living in an exciting time in this field,” Tudorache stated. “As our ability to discover these structures increases, so too will our understanding of the universe.”
Advancements in radio and optical scanning technologies are revealing increasing detail within the cosmic web. This research contributes to our understanding of these largest-scale structures in the universe.
