The claim

““NASA just discovered a ‘second Earth’ that could support human life.””

NASA frequently reports potentially rocky, temperate-zone exoplanet candidates, but viral posts often exaggerate early findings into a confirmed “second Earth” suitable for humans.

NASA and partner missions (e.g., Kepler, TESS, JWST) do announce exoplanets that are Earth-size or in the habitable zone, but “habitable zone” only means liquid water could be possible under some conditions—not that the planet is Earth-like or human-habitable. Most such planets are extremely distant, and key habitability factors (atmosphere, surface pressure, magnetic field, stellar activity, water inventory) are usually unknown or only partially constrained. Viral “second Earth” phrasing commonly conflates: (1) candidate vs confirmed planet, (2) Earth-size vs Earth-like composition, and (3) habitable zone vs demonstrated habitability. Without a specific planet name and NASA release, the claim is not verifiable as stated; as a general statement, it is misleading because it overstates what NASA typically confirms.