A block of ice more than 1,500 square kilometres in area has broken off the Amery Ice Shelf in Antarctica.
The tabular iceberg, officially named D28, broke away on September 26.
Scientists say the event is part of a normal cycle and is not related to climate change.
The last major calving at the shelf occurred in the early 1960s, NASA said, when a block measuring roughly 9,800 square kilometres broke off.

US hits five Iranian oil tankers after attack on Navy ships
Jordan intercepts 18 Iranian ballistic missiles
Air traffic control issue disrupts flights at major UK airports
At least 73 injured after Houthi rebels attack Saudi civilian and energy facilities
UK, France and Canada sanction Israeli West Bank settlements
