This perfectly rectangular mile-long iceberg was discovered floating in the Antarctic

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She added that these flat-topped and angular ice sheets are typically wider than they are deep, and can span hundreds of miles across.

The image was taken during an IceBridge flight which is a survey from the air of the planet's polar ice that gives a 3D view of the ice providing information on how it changes over time.

As the picture shows, tabular icebergs are large slabs of ice with almost vertical sides and flat tops.

But in fact, there is little that is particularly unusual about the iceberg photographed floating near the Larsen C ice shelf in Antarctica, as sea ice specialist Alek Petty explains.

The US space agency's explanation that the odd-looking iceberg's sharp angles and flat surface was an indication that it had recently broken off from a larger iceberg didn't seem to cut it online.

"In addition, IceBridge collects critical data used to predict the response of Earth's polar ice to climate change and resulting sea-level rise".

The tabular iceberg appears to be floating, but it's unknown how much of it lies below.

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Two perfectly placed rectangular icebergs captured by the Nasa's Operation Icebridge team has set the internet aflame.

He says it's a kind of formation called a tabular iceberg.

An iceberg recently spotted by NASA scientists looks like it was carefully cut into a ideal rectangle, and it's getting a lot of attention because of those unexpected angles and straight lines.

The visible part of the iceberg only represents 10 percent of the entire mass, Fox News reports.

Covering an estimated 5,800 sq km, the Larsen C ice shelf extends along the east coast of the Antarctic Peninsula from Cape Longing to Smith Peninsula.

In 2017, an iceberg the size of DE broke off from Larsen C. The trillion-ton chunk was one of the largest ever recorded.

"You can think of the shelf like a bank account", she says.

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