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Image Credit: NASA Earth Observatory

Astronauts aboard the International Space Station have the best view in the galaxy. As a result, they see lots of incredible things.

Thankfully, American astronauts are equipped with a giant pile of Nikon camera gear to document the beautiful, weird, and wild stuff they see.

Last month, they might have seen one of the strangest sights in a while...

In the image above, you can clearly see a coffin-shaped object.

If you guessed that it's an alien ship, you're wrong. Instead, it's a just an iceberg.

Actually, this isn't just any iceberg - it's the B-15T iceberg that's been floating around chilly Antarctic waters for over 18 years.

Now, though, this Manhattan-sized iceberg has entered an area of the ocean referred to as the "iceberg graveyard." It's a fitting place for a 'berg shaped like a coffin.

Image Credit: NASA

Originally, B15-T was part of an enormous chunk of ice that broke apart from the Ross Ice Shelf in March 2000.

Over time, the original iceberg broke apart, resulting in various "smaller" - I use that term loosely - icebergs that have been touring the waters around Antarctica ever since.

Now, though, B-15T has been pushed northward into warmer waters. The white box on the map above indicates just how far north the iceberg has traveled.

What's more, the southern hemisphere is now beginning its summer, spelling further trouble for the coffin-like iceberg.

Its shape is thanks to dozens of collisions over the last 18 years with other icebergs, bedrock, and even it's original home, the Ross Ice Shelf.

Image Credit: NASA/Jeremy Harbeck

B-15T isn't the only oddly-shaped iceberg NASA has spotted recently, though.

As you can see above, a NASA research plane came upon an iceberg that's just about as perfectly rectangular as an iceberg can get.

It's crazy to think that the forces of nature can shape these massive icebergs into clearly identifiable shape.

It's perhaps even crazier that astronauts floating around a couple hundred miles above earth are able to photograph them!

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Via NASA