Excellent use of choice in an animated cartoon character to invoke the pareidolia psychological phenomenon for the most prominent geological feature on Pluto's surface. Coincidentally Pluto the Pup also happens to be the unofficial mascot for the New Horizons Mission and can be seen here standing guard, watching over flight controllers (along with other science team members) in New Horizons' Mission Operations Control Centre (MOCC) based off at Johns Hopkins University: Applied Physics Laboratory (JHU: APL).
The Heart of Pluto as it's commonly now known has tentatively been named Tombaugh Regio in honour and memory of her discoverer, American Astronomer, Clyde William Tombaugh (1906 – 1997).
The fence we walked between the years
Did bounce us serene.
It was a place half in the sky where
In the green of leaf and promising of peach
We'd reach our hands to touch and almost touch the sky,
If we could reach and touch, we said,
'Twould teach us, not to, never to, be dead.
We ached and almost touched that stuff;
Our reach was never quite enough.
If only we had taller been,
And touched God's cuff, His hem,
We would not have to go with them
Who've gone before,
Who, short as us, stood tall as they could stand
And hoped by stretching, tall, that they might keep their land,
Their home, their hearth, their flesh and soul.
But they, like us, were standing in a hole.
O, Thomas, will a Race one day stand really tall
Across the Void, across the Universe and all?
And, measured out with rocket fire,
At last put Adam's finger forth
As on the Sistene Ceiling,
And God's hand come down the other way
To measure man and find him Good,
And Gift him with Forever's Day?
I work for that.
Short man, Large dream, I send my rockets forth
between my ears,
Hoping an inch of Good is worth a pound of years.
Aching to hear a voice cry back along the universal Mall:
We've reached Alpha Centauri!
We're tall, O God, we're tall!
Original video of Ray Bradbury reciting his short poem entitled "If Only We Had Taller Been" a day before Mariner 9 (Mariner Mars '71 / Mariner-I), the first spacecraft ever to orbit another planet, was captured by the Martian gravity well and inserted into a areocentric orbit on the 12th of November 1971 where it remains till this day.