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James Webb Discovers Earth-Like Auroras on Rogue Planet

10/3/2025

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Summary

Story summary

SIMP 0136 is a rogue planet 20 light-years from Earth and 13 times Jupiter mass.
The James Webb Space Telescope (JWST) observed auroras on SIMP 0136, similar to Earth's northern lights.
It hosts persistent silicate-grain clouds, unlike Earth's.
Researchers report a thermal inversion; temperature rises with altitude.
The findings were published in Astronomy & Astrophysics on September 26, 2025.

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Story summary

SIMP 0136 is a rogue planet 20 light-years from Earth and 13 times Jupiter mass.
The James Webb Space Telescope (JWST) observed auroras on SIMP 0136, similar to Earth's northern lights.
It hosts persistent silicate-grain clouds, unlike Earth's.
Researchers report a thermal inversion; temperature rises with altitude.
The findings were published in Astronomy & Astrophysics on September 26, 2025.