JWST decoded the Pink Planet GJ 504 b in two hours, revealing salty clouds of potassium chloride that ground telescopes missed for a decade. For over a decade, the best observatories on Earth pointed at GJ 504 b and came up empty. Discovered in 2013 orbiting a Sun-like star 57 light-years away, the so-called Pink Planet runs at roughly 550°F — hot enough to bake bread, but brutally faint ... [2219 chars]
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