Poc marks, even landscapes get them

in #science • 6 years ago (edited)

These are features of ice bound regions and permafrost.

Some speculated that these on the coast of the US are giant snowball splashes from a cometary impact with an ancient ice sheet but new ones are being formed currently in active ice fields dashing that theorey.

snipped from here:

#space #scenery #satelite #imagery #palnet
6 years ago in #science by
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