WASP-76b, an ultra-hot Jupiter exoplanet about 640 light-years away. On the day side, temperatures soar past 2,400°C (4,350°F) - hot enough to vaporize iron into gas. WASP-76b is also tidally locked. The hot side vaporizes iron, and violent winds whip that iron vapor to the cooler night side, where it condenses into liquid metal droplets and falls as molten iron rain.

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