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New Study Suggests Cryovolcanism on Pluto's Kildaze Caldera

10/20/2025

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Summary

Story summary

A study in The Planetary Science Journal argues Pluto's Kildaze caldera in Hayabusa Terra shows cryovolcanism, based on NASA's New Horizons imagery.
The analysis dates water ice at Kildaze to a few million years old, implying past eruptions.
The study questions Pluto's internal heating sources, possibly from tidal interactions with Charon or radioactive decay.
Ongoing analysis of New Horizons data aims to uncover more about Pluto's geological activity.

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Story summary

A study in The Planetary Science Journal argues Pluto's Kildaze caldera in Hayabusa Terra shows cryovolcanism, based on NASA's New Horizons imagery.
The analysis dates water ice at Kildaze to a few million years old, implying past eruptions.
The study questions Pluto's internal heating sources, possibly from tidal interactions with Charon or radioactive decay.
Ongoing analysis of New Horizons data aims to uncover more about Pluto's geological activity.