NASA's true-color corrected reflectance image of a very large iceberg A23A moving toward South Georgia Island in Antarctica was captured by the MODIS instrument aboard the Terra satellite. Glacier Power: What is Glacial Calving? When a piece of a glacier breaks off, it's called calving, and results in an iceberg . Glacier Power: Teacher's Guide for Segment Review Questions Find answers to segment review questions included in Glacier Power chapters. Iceberg A23A was captured in this false-color corrected reflectance (Bands 7-2-1) image from the Moderate Resolution Imaging Spectroradiometer (MODIS) aboard the Aqua platform on March 4, 2025. The iceberg , the big blue object southwest of the island, has run aground near South Georgia Island in Antarctica. A23A is currently the world's biggest iceberg with an area of approximately 3,000 square kilometers, which is about the size of Rhode Island. Previous movement predictions suggested that ...
