Here's how that weird, rectangular-looking iceberg came to be

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NASA scientist Kelly Brunt told LiveScience, "What makes this one a bit unusual is that it looks nearly like a square".

While the rectangular ice might look a little unreal, they're still just a natural part of the process of icebergs breaking off the Larsen C ice shelf in Antarctica.

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.

Ice scientist Kelly Brunt explained to Live Science that tabular icebergs are fairly common.

Speaking to LiveScience, University of Maryland Earth scientist Kelly Brunt compared calving events to a long fingernail that eventually snaps off at the end; the process often results in seemingly ideal geometric edges.

"If you look in detail you will even see that from the top is it not that perfectly rectangular as the photo seems to indicate", Stef Lhermitte, a geoscientist specializing in remote sensing at the Netherlands' Delft University of Technology, said over email.

But how does the iceberg form its ideal shape? They're often rectangular and geometric as a result, she added.

NASA's Operation IceBridge, which monitors polar ice using plane surveys, has been going on for a decade.

The ice shelf is about 1,100ft thick and floats on the edge of West Antarctica.

"What makes this one a bit unusual is that it looks nearly like a square".

"We get two types of icebergs". Floating in the Weddell Sea off Antarctica, this iceberg is roughly a mile across, the BBC reports, with 90% of its mass hidden below the surface.

"My guess is that A68 will continue rotating as it is now around that western point, until what is currently the northern edge collides with the Larsen C ice front".

That was not the only shape that scientists spotted last Wednesday.

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