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 ...

The huge iceberg A23a measures almost 1,500 square miles, roughly twice the size of Greater London, and is as tall as the Shard in London. Dr Andrew Meijers, ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. The world's largest iceberg, A23a, is spinning north of Antarctica and it probably will do so ...

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 has held the “largest current iceberg” title several times since the 1980s, occasionally being surpassed by larger but shorter-lived icebergs, including A68 in 2017 and A76 in 2021.

Megaberg A23a might be on the verge of running into South Georgia and surrounding islands in the South Atlantic. The result could spell trouble for wildlife on those islands, and A23a's movement ...

NASA image of A23a taken on November 28, 2023. This iceberg is caught in a vortex and may be trapped for years. NASA Earth Observatory images by Wanmei Liang, using MODIS data from NASA EOSDIS ...

A23a has held the "largest current iceberg" title several times since the 1980s, occasionally being surpassed by larger but shorter-lived icebergs, including A68 in 2017 and A76 in 2021.