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Rogue Planet's Growth Spurt Challenges Stellar Formation Theories

10/10/2025

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Summary

Story summary

Cha 1107-7626, a rogue planet about 620 light-years away in the Chamaeleon constellation, is undergoing unprecedented growth spurt.
It weighs five to ten times Jupiter and accretes six billion tons per second, eight times faster than earlier measurements.
Observations used the European Southern Observatory (ESO) and the James Webb Space Telescope (JWST).
Results imply rogue planets may form like stars.

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Story summary

Cha 1107-7626, a rogue planet about 620 light-years away in the Chamaeleon constellation, is undergoing unprecedented growth spurt.
It weighs five to ten times Jupiter and accretes six billion tons per second, eight times faster than earlier measurements.
Observations used the European Southern Observatory (ESO) and the James Webb Space Telescope (JWST).
Results imply rogue planets may form like stars.