Stunning new deep-field imagery captured by NASA’s James Webb Space Telescope has revealed one of the most distant known galaxies observed by astronomers.
Formed just 280 million years after the Big Bang—a blink of the eye at cosmic timescales—the new imagery of galaxy cluster Abel S1063 provides astronomers with an unprecedented look at some of the earliest galaxies to have formed in our universe.
Likening the new imagery to time travel, the European Space Agency (ESA) said in a statement that the new Webb imagery builds on past observations by its predecessor, the Hubble Space Telescope, and now “takes this quest even further back in time” to reveal a more detailed look at what the agency called a cosmic “mega-monster” in the distant reaches of the early universe.
Travel back through time ⌛
Totalling around 120 hours of observing time, this is the longest the NASA/ESA/CSA James Webb Space Telescope has ever focused on a single target.
The deep field aims to probe the Cosmic Dawn, when the Universe was only a few million years old.… pic.twitter.com/NQlba23U7J
— European Space Agency (@esa) May 27, 2025
The new image was released as Webb’s “Picture of the Month,” and reveals a dense cluster of galaxies located around 4.5 billion light-years from Earth within the constellation Grus.
However, apart from its extreme distance, the new imagery also reveals a cosmic oddity, with multiple warped arcs of light encircling the central cluster. These peculiar bands of light are the result of gravitational lensing, where light produced by even more distant background galaxies is warped by Abel S1063’s immense gravitational influence.
New Perspectives on Abel S1063
This is not the first time Abel S1063 has been observed by astronomers, although the new imagery is certainly the most detailed. Previous observations by NASA’s Hubble Space Telescope under its Frontier Fields program had provided a sort of natural “magnifying glass,” according to the European Space Agency, which allowed astronomers an even deeper view of the universe beyond.
Now, thanks to the sensitivity of Webb’s Near-Infrared Camera (NIRCam), Abel S1063 and the surrounding cosmic features warped by gravitational lensing reveal a dense “forest” of lensing arcs, showcasing some of the Universe’s earliest galaxies in unprecedented detail, as seen in the image below.
Combining Images to Form a Cosmic Masterpiece
To produce the new imagery, a series of nine separate near-infrared exposures collected over close to 120 hours of observational time were combined into a composite. The resulting image is now recognized as Webb’s deepest view of a single target yet produced.
Focusing on the gravitational lensing caused by Abel S1063, astronomers hope they may be able to detect some of the first galaxies ever formed, originating during a period referred to as “Cosmic Dawn” when the Universe was only a few hundred million years old.
Webb Space Telescope Offers A ‘GLIMPSE’ Into the Past
Webb’s unprecedented deep field imagery of Abel S1063 was collected under NASA’s Galactic Legacy Infrared Midplane Survey Extraordinaire (GLIMPSE) program, which involves a series of NASA-funded infrared astronomical surveys conducted by instruments that also include the Spitzer Space Telescope, and which seek to unravel the mysteries of our universe at Cosmic Dawn.
Each new deep field image captured by Webb continues to push the boundaries of how far back astronomers can peer into the past, allowing a rare glimpse of our universe at a time when galaxies were still in their relatively early stages of formation.
With time, these remarkable images of our early universe will also help to construct a more detailed picture of the earliest structures that shaped the nascent cosmos and provide clues to how they formed.
Micah Hanks is the Editor-in-Chief and Co-Founder of The Debrief. He can be reached by email at micah@thedebrief.org. Follow his work at micahhanks.com and on X: @MicahHanks.