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Key Features of Pluto
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The Heart (Tombaugh Regio)
Slow-speed collision with a planetary body.

The Dunes
Area above The Heart that was created by wind and sublimation. They are made of frozen methane.

The Whale
The whale was formed from a giant impact that resulted in a large pool of hot water that cooled over time to form a reddish and dark region that resembles a whale.

Brass Knuckles
Formed from a combination of Solar Winds and particles from the younger sun.
(ON PHOTO: Red region to the bottom right of the heart.)
