Pluto's moon Charon may have once spun once every 14 hours, and its ancient mountains still record how it slowed down

Charon's oldest landscapes preserve evidence of early despinning.

Tectonic features in Oz Terra indicate a period of faster rotation.

These structures resemble landforms created by crustal compression.

Scientists estimate Charon's initial rotation period was approximately 14 hours.

The ancient process likely occurred before other major geological events.