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Rogue Planet Challenges Star-Planet Formation Boundaries

10/5/2025

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Summary

Story summary

Cha 1107-7626, a rogue planet 620 light-years away, accretes at six billion tonnes per second.
The study, led by Víctor Almendros-Abad, used ESO's Very Large Telescope and the James Webb Space Telescope.
Findings suggest rogue planets may form like stars, blurring the boundary between planetary-mass objects and stars.
Magnetic activity drives mass infall, a mechanism previously seen only in stars.

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Story summary

Cha 1107-7626, a rogue planet 620 light-years away, accretes at six billion tonnes per second.
The study, led by Víctor Almendros-Abad, used ESO's Very Large Telescope and the James Webb Space Telescope.
Findings suggest rogue planets may form like stars, blurring the boundary between planetary-mass objects and stars.
Magnetic activity drives mass infall, a mechanism previously seen only in stars.