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NASA's JWST Detects Methane on Dwarf Planet Makemake

9/19/2025

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Summary

Story summary

Researchers identified methane gas on the dwarf planet Makemake using NASA’s James Webb Space Telescope (JWST).
This discovery makes Makemake the second trans-Neptunian object with detected gas, following Pluto.
Methane indicates possible geological activity or a thin atmosphere, akin to Pluto.
The methane signal suggests surface ices or cryovolcanic activity.
Further JWST observations are necessary to determine the methane's source.

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Story summary

Researchers identified methane gas on the dwarf planet Makemake using NASA’s James Webb Space Telescope (JWST).
This discovery makes Makemake the second trans-Neptunian object with detected gas, following Pluto.
Methane indicates possible geological activity or a thin atmosphere, akin to Pluto.
The methane signal suggests surface ices or cryovolcanic activity.
Further JWST observations are necessary to determine the methane's source.