A one trillion tonne iceberg has broken away from Antarctica, and is one of the biggest on record.
Here's an animation which gives us a little perspective on the iceberg's impressive size...
Scientists have been expecting the iceberg to come loose for months, and it was already floating so there's no immediate impact on sea levels.
Its likely to now break into fragments, which increases the risk for ships, including passenger cruise vessels travelling to and from South America.
Icebergs break off naturally from the ice shelf, so the experts aren't pointing to climate change for this latest and major separation, just yet.
However, they have been predicting for some time the Larsen C ice shelf could disappear in the next 10 to 20 years.
The latest break has reduced the shelf by 12 per cent.