NASA captures a large, square-shaped piece of ice

NASA has just published a picture of a block of ice in Antarctica in a square, flat surface, as if someone had carefully cut it into blocks.But those who think this is an alien product will be disappointed, because it's really just a natural phenomenon.

The image is part of NASA's Operation Icebridge project, which specializes in shooting polar ice at the Earth to better understand the connection between polar regions and the Earth's climate system.

Although there are usually no precise lines or 90-degree angles in nature, the reality is still present, though rare.We almost all think icebergs are jagged blocks of ice on the surface of the water, but these flat blocks of ice are a little different.

The square and flat ice is cut

As in the image above, the iceberg is a rectangular block with straight edges and flat surfaces.The ice is often made up of breakage from ice blocks, but in this case, it comes from the Larsen C ice shelf - also the ice sheet that created the 2,200 square-mile ice block billion billion tons last year.

'There are two types of ice: one that everyone envisions, like an iceberg that sank the Titanic, with triangles or prisms on the surface;another is called tabular iceberg, 'Kelly Brunt, a tape researcher at NASA and the University of Maryland, told Live Science.

Because the wind and the sea are still not abraded to the straight edge of the ice sheet, this ice sheet is probably only separated.It is about a mile wide and like many icebergs, only about 10% above the surface is visible.

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