Strong tidal dissipation in Io and Jupiter from astrometric observations

@article{Lainey2009StrongTD,
  title={Strong tidal dissipation in Io and Jupiter from astrometric observations},
  author={Val{\'e}ry Lainey and J. -E. Arlot and {\"O}zg{\"u}r Karatekin and Tim Van Hoolst},
  journal={Nature},
  year={2009},
  volume={459},
  pages={957-959}
}
Io is the volcanically most active body in the Solar System and has a large surface heat flux. The geological activity is thought to be the result of tides raised by Jupiter, but it is not known whether the current tidal heat production is sufficiently high to generate the observed surface heat flow. Io’s tidal heat comes from the orbital energy of the Io–Jupiter system (resulting in orbital acceleration), whereas dissipation of energy in Jupiter causes Io’s orbital motion to decelerate. Here… 

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