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Antarctica with a small iceberg to the upper left Breakup of Iceberg
B-10A, an iceberg about the size of Rhode Island, took hundreds of thousands of years to form. It broke off the end of Antarctica's Thwaites Glacier in 1992 and has been drifting in the ocean ever since, driven by ocean currents and wind.

This image demonstrates the first time that radar technology was used to track a potential threat to international shipping.

The image was produced by the SeaWinds instrument aboard NASA's QuikScat satellite.

+ Full image and caption
 
  Jet Propulsion Laboratory
   California Institute of Technology