NASA's Terra satellite captured an image of the massive iceberg A-23A on December 26, 2025. The berg was nearly twice the size of Rhode Island when it first detached from Antarctica's Filchner Ice Shelf in 1986 and has been one of the largest and longest-lived icebergs ever tracked by scientists.
However, over the past few decades, its massive size has shrunk dramatically as it has sopped up meltwater and is now on the verge of complete disintegration. The image shows that extensive pools of blue meltwater are visible on its surface. This phenomenon is likely caused by ongoing disintegration events, where the weight of water in cracks forces them open.
The striking linear patterns of blue and white across the berg are also visible in the MODIS image taken by NASA's Terra satellite. These patterns are a result of striations that were scoured hundreds of years ago when the ice was part of a glacier dragging across Antarctic bedrock.
According to scientists, the iceberg could be just days or weeks from disintegrating completely due to factors like warmer air and water temperatures in the region. The berg is currently riding currents that are pushing it toward even warmer waters, which will accelerate its disintegration process.
The demise of A-23A marks a bittersweet moment for scientists who have been tracking it throughout its long journey. While it's an event similar to many other Antarctic icebergs, the path of this particular berg has been remarkably long and eventful.
As the world bids farewell to A-23A, attention turns to other massive bergs waiting in the wings, some of which are even larger than 1,500 square kilometers.
However, over the past few decades, its massive size has shrunk dramatically as it has sopped up meltwater and is now on the verge of complete disintegration. The image shows that extensive pools of blue meltwater are visible on its surface. This phenomenon is likely caused by ongoing disintegration events, where the weight of water in cracks forces them open.
The striking linear patterns of blue and white across the berg are also visible in the MODIS image taken by NASA's Terra satellite. These patterns are a result of striations that were scoured hundreds of years ago when the ice was part of a glacier dragging across Antarctic bedrock.
According to scientists, the iceberg could be just days or weeks from disintegrating completely due to factors like warmer air and water temperatures in the region. The berg is currently riding currents that are pushing it toward even warmer waters, which will accelerate its disintegration process.
The demise of A-23A marks a bittersweet moment for scientists who have been tracking it throughout its long journey. While it's an event similar to many other Antarctic icebergs, the path of this particular berg has been remarkably long and eventful.
As the world bids farewell to A-23A, attention turns to other massive bergs waiting in the wings, some of which are even larger than 1,500 square kilometers.