Astronomers using NASA’s James Webb Space Telescope have produced the strongest evidence yet of a planet orbiting Alpha Centauri A, the nearest Sun-like star to Earth. Images captured with Webb’s Mid-Infrared Instrument in August 2024 revealed a faint object more than 10,000 times dimmer than the star, located about twice the Earth–Sun distance away. Orbit simulations that combine the Webb data with an earlier 2019 sighting from the Very Large Telescope suggest the object is a gas giant roughly the mass of Saturn. The candidate follows an elongated path that swings between 1 and 2 astronomical units, placing it within Alpha Centauri A’s habitable zone, though its gaseous nature would preclude life as we know it. Follow-up Webb observations in February and April 2025 failed to recover the object—an outcome consistent with models showing the planet would have been lost in the star’s glare at those times. The research, detailed in two papers accepted by The Astrophysical Journal Letters and led by NASA’s Charles Beichman and Caltech graduate student Aniket Sanghi, will be tested with additional Webb time in 2026 and with the forthcoming Nancy Grace Roman Space Telescope. If confirmed, the world would become the closest exoplanet ever directly imaged and the first such discovery around a true solar twin, offering an unprecedented laboratory for studying planetary formation and dynamics in a binary-star environment.