Why Asperitas Clouds - or Undulatus Asperatus - are so rare. Want to see the world through the eyes of a scientist? Visit https://brilliant.org/astrum to sample their courses for free, and the first 200 of you will get 20% off Brilliant's annual premium subscription.

Thanks to Alex Schueth for the awesome time lapse: https://www.youtube.com/c/alexschueth

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world meteorological organization kelvin helmholtz cloud asperitas timelapse