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New Exoplanet Discovered: TOI-1422 c Challenges Formation Models

11/26/2025

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Summary

Story summary

TOI-1422 c has been confirmed as the second exoplanet in the TOI-1422 system, about 500 light-years from Earth.
TOI-1422 c is nearly three times larger and 14 times more massive than Earth.
The study led by Luca Naponiello (Turin Observatory) finds an unusual mass–size relationship between TOI-1422 b and c, challenging planetary formation models.

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Story summary

TOI-1422 c has been confirmed as the second exoplanet in the TOI-1422 system, about 500 light-years from Earth.
TOI-1422 c is nearly three times larger and 14 times more massive than Earth.
The study led by Luca Naponiello (Turin Observatory) finds an unusual mass–size relationship between TOI-1422 b and c, challenging planetary formation models.