The A23a iceberg, one of Earth’s most colossal frozen structures, is breaking into pieces off South Georgia Island. Its collapse could have lasting environmental effects—and scientists are ...

Satellite images of the A23a iceberg splitting apart near South Georgia, on May 3, 2025. NASA/Aqua ...

The giant iceberg became trapped again in early 2024 after getting caught in a large ocean vortex. It remained spinning on the spot for several months before eventually breaking free in December ...

This type of iceberg disintegration is known as "edge wasting" and has shrunk A23a by around 200 square miles (520 square km) since it became stuck in March, according to NASA. At this rate, it ...