Summary:
- Observations from stellar occultations indicate that Pluto’s atmosphere is undergoing a seasonal thinning as the planet moves further away from the sun in its orbit.
- Despite the cooling temperatures and condensation of nitrogen ice back onto the surface, the atmosphere has not yet collapsed entirely, defying some earlier model predictions.
- The study highlights the complex, dynamic nature of Pluto’s atmospheric pressure, which is heavily influenced by the sublimation and deposition cycles of surface ices over its 248-year orbital period.