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Discovery of Potential Habitable Exoplanet GJ 251 c

10/28/2025

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Summary

Story summary

GJ 251 c is a candidate exoplanet about 18 light-years away in the habitable zone.
It is a super-Earth nearly four times Earth's mass and orbits every 53.6 days.
Researchers used more than 20 years of data to detect its gravitational influence on the star.
Climate models suggest liquid water could exist under a thick carbon dioxide atmosphere.
Confirmation will require advanced telescopes with imaging in the next decade.

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Story summary

GJ 251 c is a candidate exoplanet about 18 light-years away in the habitable zone.
It is a super-Earth nearly four times Earth's mass and orbits every 53.6 days.
Researchers used more than 20 years of data to detect its gravitational influence on the star.
Climate models suggest liquid water could exist under a thick carbon dioxide atmosphere.
Confirmation will require advanced telescopes with imaging in the next decade.