Article
Kepler-186f: Earth's Cousin in the Habitable Zone
Reference article concept on Kepler-186f, focused on habitability context and why Earth-size planets in habitable zones remain follow-up-worthy.
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Kepler-186f: The First Earth-Size Planet in the Habitable Zone
NASA Exoplanet Archive
Class A official/archiveEnsure cautious language; focus on observational context and avoid life-detection claims.
Proposed Angle
Highlight the significance of Earth-sized planets in habitable zones for astrobiology context.
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citation check: passed
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editorial review: passed
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