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NASA Discovers Earth-Size Planets in Binary Star System

10/27/2025

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Summary

Story summary

Astronomers using NASA's TESS spacecraft have discovered three Earth-size planets in the TOI-2267 binary star system, 190 light-years away.
The finding challenges previous theories that binary star environments cannot support stable planetary systems.
The system is the first known to host transiting planets around both stars.
Researchers used SPECULOOS and TRAPPIST to investigate these planets.
The discovery may advance understanding of rocky planet formation and planetary diversity in the galaxy.

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Story summary

Astronomers using NASA's TESS spacecraft have discovered three Earth-size planets in the TOI-2267 binary star system, 190 light-years away.
The finding challenges previous theories that binary star environments cannot support stable planetary systems.
The system is the first known to host transiting planets around both stars.
Researchers used SPECULOOS and TRAPPIST to investigate these planets.
The discovery may advance understanding of rocky planet formation and planetary diversity in the galaxy.