Saturn's Spin Mystery Solved: Webb Uncovers a Planetary Heat Pump
TL;DR Summary
Astronomers using the James Webb Space Telescope show Saturn’s apparent, inconsistent rotation is an illusion created by a self-sustaining loop between auroral heating and the planet’s upper atmosphere. By tracking the infrared glow of the H3+ molecule across Saturn’s northern aurora for a full Saturnian day, researchers mapped temperature and winds, revealing that auroral heating drives winds which power currents that sustain the aurora—effectively a planetary heat pump. This two-way coupling between atmosphere and magnetosphere could change how scientists interpret signals from gas giants and exoplanets.
- A planet that tricks physics? Webb reveals the secret behind Saturn’s strange rotation Interesting Engineering
- JWST solves decades-long mystery about why Saturn appears to change its spin Phys.org
- context_saturns_temperatures_movie.mov (VIDEO) EurekAlert!
- Saturn’s Northern Lights Are Running a Heat Pump That Fooled Scientists for Decades ScienceBlog.com
- "We Knew Something Strange Was Happening": Saturn’s Northern Lights Drive a Planetary ‘Heat Engine,’ Solving Decades-Long Rotation Mystery The Debrief
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