Back to “Pluto: The Big Picture” To the story of Sputnik Planum Looking like giant paving stones that have been ripped up and dumped, these slabs were once part of a crust that covered the ices of the Sputnik Planum. They are around 3 miles thick and up to 20 miles wide. They now form […]

"20 Mile Long Slabs of Crust Stacked like Flagstones in a Dump"