Nearly 400 miles off the coast of Antarctica, the Earth’s largest iceberg — whose sprawling surface covers more than 1,600 square miles — is spinning like a top. The iceberg, dubbed A23a, is caught ...

The world’s largest and oldest iceberg has “set sail” upon a new voyage across Antarctica's Southern Ocean. Known as A23a, the megaberg weighs almost one trillion tonnes and measures 3,900 ...

A23a, as it's known, broke away from the Antarctic coastline way back in 1986, but it's only recently begun a big migration. For more than 30 years, it was stuck rigidly in the bottom-muds of the ...

The colossal iceberg known as A23a has been slowly spinning in one spot of the Southern Ocean since April. Here’s what experts have to say on the phenomenon.

A23a made worldwide news last week after it moved out of the Weddell Sea sector into the Southern Ocean. It calved from the Filchner Ice Shelf in 1986, before being grounded on the seabed nearby ...

The world's largest iceberg, A23a, is spinning north of Antarctica and it probably will do so for a long time. The block of ice is caught in a swirling ocean current caused by an obstruction on ...

However, A23a may not hold its size title for long, because as of May 16, it is only around 12 square miles (31 square km) larger than the next-biggest iceberg, D15A, according to the U.S ...

About the size of Rhode Island, the iceberg known as A23a got stuck in an ocean vortex this summer, spinning in place for months. Now, it's free, and heading back into open Antarctic waters.

A23a, the world's biggest iceberg, is on the move 37 years after it broke off from Antarctica. The iceberg, which covers about 1,500 square miles, is set to enter the Atlantic Ocean.

Iceberg A23a measures 40 by 32 nautical miles, according to the U.S. National Ice Center. For comparison, Hawaii's island of Oahu is 44 miles long and 30 miles across.

A23a will have its legacy. Like all big bergs, its progressive melt will be dispersing the mineral dust that was caught up in its ice when still part of a glacier.