A green snake in the sky
Slithers and twists its tail
A new type of aurora
That scientists unveil

It was discovered in 2021
But no one knows why or how
It occurs in the polar night
And makes the watchers wow

It may be linked to chorus waves
That modulate the light
Or maybe it's a cosmic sign
Of something out of sight

A diffuse auroral eraser
A mystery in the air
A wonder of nature's beauty
A spectacle so rare.