How Giant Planets Kept Their Rapid Spin ⚡ экспресс
Original: "Distinct Rotational Evolution of Giant Planets and Brown Dwarf Companions"
Astronomers have figured out why giant planets spin much faster than more massive brown dwarfs.
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Giant planets spin almost at the breakup limit, while brown dwarfs are many times slower. Astronomers discovered it's all about a weak 'disk brake' at birth. Planets were barely hindered from spinning up. This changes how we view the youth of planetary systems.
🎯 A day on Jupiter lasts only 10 hours—faster than any other planet in the Solar System.