"We Finally Know What Made the Huge Heart on Pluto" Topic

"Almost as soon as Pluto came into view, we saw it: A big heart splashed across half the dwarf planet's surface, like something left it there on purpose for us to see. A year after we spotted it, we have an answer as to what put it there.

We already knew what was in Pluto's heart; it's formed primarily by huge glaciers, and made mostly of nitrogen ice. But, where these materials came from remained a mystery. Now, a new paper out in Nature has an answer for us.

The researchers used data and observations collected during NASA's New Horizons fly-by to build an environmental simulation that encompasses the last 50,000 years of Pluto's history. Previously, researchers suspected that the size of glaciers at Pluto's heart meant that there was a vast reservoir of nitrogen ice somewhere beneath Pluto's surface. The new model shows no such deep ice reservoir existing, though. Instead, Pluto's icy environment is shaped by deep basins on the surface, which have incredibly cold temperatures, and seasonally-shifting methane frosts.
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Amicalement
Armand

Just happens to be that shape.