Thursday, August 7, 2025

The JWST Found Evidence Of An Exo-Gas Giant Around Alpha Centauri, Our Closest Sun-Like Neighbour

This artist’s concept shows what the gas giant orbiting Alpha Centauri A could look like. Observations show that the planet is about the same mass as Saturn and orbits the star at about 2 astronomical units. Alpha Centauri A is at the upper left of the planet, while the other Sun-like star in the system, Alpha Centauri B, is at the upper right. Our Sun is shown as a small dot of light between those two stars. Image Credit: NASA, ESA, CSA, STScI, R. Hurt (Caltech/IPAC). License: CC BY 4.0 INT or ESA Standard License

Astronomers using the NASA/ESA/CSA James Webb Space Telescope have found strong evidence of a giant planet orbiting a star in the stellar system closest to our own Sun. At just 4 light-years away from Earth, the Alpha Centauri triple star system has long been a compelling target in the search for worlds beyond our solar system.



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