The brains at NASA are so certain that the world will not end on December 21st that they have already released their video "Why the world didn't end yesterday".

The video is scientific but pretty easy to understand and I like that it's NASA basically saying they're so sure we have nothing to worry about they are already releasing the video they would have on the 22nd of December. The video is under five minutes long and worth watching. Enjoy!

 

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