Astronomers have found the strongest evidence so far that some planets outside the Solar System possess magnetic fields.
The study focuses on seven ultra-hot Jupiters, giant gaseous exoplanets orbiting extremely close to their stars, with one side permanently facing the star and the other locked in darkness.
These planets are not Earth-like and are not candidates for life, but their atmospheres offer a useful laboratory because they are hot enough for metals such as iron to become detectable and partly ionized.
Using high-resolution observations from instruments including ESPRESSO on ESO’s Very Large Telescope and MAROON-X on Gemini North, the team measured Doppler shifts in iron lines to estimate atmospheric wind speeds.
Under ordinary atmospheric physics, hotter planets should have stronger winds because their atmospheres receive more stellar energy. Instead, the researchers found the opposite trend: the hotter the planet, the slower the measured winds.
The most plausible explanation is magnetic drag. In these intensely heated atmospheres, charged particles interact with the planet’s magnetic field, which acts like a brake on atmospheric circulation. From this relationship, the team inferred magnetic field strengths of at most a few gauss, broadly comparable to magnetic fields found among Solar System planets and close to Jupiter-like values.
The result does not mean that Earth-like exoplanets with protective magnetic fields have been detected. It means that, for the first time, astronomers have a robust population-level method for linking atmospheric dynamics to planetary magnetism in exoplanets.
That matters because magnetic fields can influence how planets evolve, how their atmospheres are retained or lost, and, indirectly, whether rocky planets might remain habitable over long timescales.
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🚨 SCIENTISTS FINALLY FIGURED OUT WHY GOLD NEVER TARNISHES AND IT’S ALL ABOUT ATOM GEOMETRY.
Gold stays perfectly shiny for centuries while silver dulls, copper turns green, and iron rusts. For decades, no one could explain exactly why.
Now researchers at Tulane University have cracked it using quantum simulations.
When gold is cut, its surface atoms don’t stay still. They rearrange into a stable hexagonal pattern. This specific geometry makes it extremely difficult for oxygen molecules to split and react with the metal requiring far more energy than other arrangements.
Why this matters:
• Gold’s famous inertness is not just chemical it’s geometric
• The hexagonal “reconstruction” of atoms creates a protective barrier at the atomic level
• This explains why gold is so resistant to tarnishing and corrosion
• It also shows why gold is normally a poor catalyst but could become an excellent one if we force atoms into different patterns
The deeper implication is enormous:
We are learning that the behavior of materials at the atomic scale is controlled by geometry as much as chemistry.
By understanding and controlling this atomic rearrangement, scientists could finally make gold a powerful catalyst for clean chemistry while keeping its legendary shine for jewelry and electronics.
What other “eternal” properties of materials might actually come down to tiny patterns of atoms?
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