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Showing posts from August 9, 2025

James Webb Telescope Detects Potential Gas Giant Exoplanet Just 4 Light-Years Away

New observational evidence from the James Webb Space Telescope (JWST), which has yet to launch, may change that. JWST astronomers have found tantalising hints of an orbiting gas giant around Alpha Centauri A, the closest Sun-like star to us. Located just four light-years away in the Alpha Centauri triple-star system, the potential planet sits within the star's habitable zone — the region where liquid water could exist — but its gas giant nature makes it inhospitable to life. Even so, its location and distinctiveness make the detection among the most captivating detections in exoplanetary exploration prior. JWST Unveils Possible Closest Sun-Like Star Exoplanet, Awaiting Confirmation According to a NASA report, this was done with the JWST Mid-Infrared Instrument (MIRI) using a coronagraphic mask to block out stellar glare. This method caught sight of an object which is almost 10,000 times fainter than Alpha Centauri A and at a separation of around two astronomical units. If upheld, i...