Grains of Sand Reveal Possible Fifth State of Matter

Technically this would be the 6th state of matter. The 5 others being:

Liquid

Gas

Solid

Plasma

Bose-Einstein Condensate (this one is really overlooked)

Linkbait. This guy is noticing admittedly interesting characteristics of "grain dynamics," but it's not a new state of matter at all.

Does this happen in a vacuum?