'Winds faster than a jet': Planet WASP-121 b is so hot, it rains molten iron from the sky

Produced by: Manoj Kumar

Metal Rain

On the planet’s nightside, vaporized iron and titanium condense and fall as liquid metal droplets, creating an alien storm unlike anything on Earth.

Supersonic Winds

Astronomers detected jet streams spanning half the planet, moving at thousands of miles per hour, reshaping its extreme atmosphere.

Tidal Prison

WASP-121 b is tidally locked, meaning one side boils in eternal daylight, while the other faces the cold void of space forever.

Weather Mystery

Its atmosphere behaves in ways that challenge our understanding of planetary weather, exhibiting wind patterns unseen anywhere in the universe.

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Molten Twilight

At the boundary between its scorching dayside and cooler nightside, the air churns violently, shifting metals between gas and liquid states.

Ultra-Hot Giant

As a superheated gas giant, WASP-121 b reaches temperatures high enough to vaporize metals, creating an entirely alien climate.

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Orbital Extremes

The planet orbits its star in just 30 Earth hours, meaning a "year" here is barely more than a single Earth day.

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Unreal Atmosphere

Astronomers used the Very Large Telescope to create the first-ever 3D atmospheric map of an exoplanet, revealing its violent climate.

Sci-Fi Reality

Lead researcher Julia Victoria Seidel called WASP-121 b’s weather "something out of science fiction"—but it’s all terrifyingly real.