Days later, Deimos-2 swung by and took two zoomed-in, very-high-resolution images of the iceberg and the rift that spawned it. This view shows a central section of the rift.

The world's largest iceberg, A23, is fragmenting into smaller pieces, potentially jeopardizing both ships and the millions of penguins on the South Georgia Island wildlife refuge.

There is a new iceberg in the Southern Ocean, and it's big: 50 miles long by 20 miles wide. Until February, it had been the tongue of the Mertz Glacier, sticking out from the East Antarctic ice ...