Do Uranus’s Moons Have Subsurface Oceans?

Atmospheric Moons Galileo Would Have Loved

In the spirit of the symposium and the theme of the session of this presentation, 7 “Our solar system after Galileo, the grand vision,” I review briefly a relatively recently discovered 8 phenomenon in the solar system − existence of atmospheres on certain moons, including Io, one 9 of the four moons Galileo discovered four centuries ago. The origin of such atmospheres is 10 discussed, and comp...

Tidal resonance in icy satellites with subsurface oceans

Tidal dissipation is a major heat source for the icy satellites of the giant planets. Several icy satellites likely possess a subsurface ocean underneath an ice shell. Previous studies of tidal dissipation on icy satellites, however, have either assumed a static ocean or ignored the effect of the ice lid on subsurface ocean dynamics. In this study, we examine inertial effects on tidal deformati...

Subsurface Oceans on Europa and Callisto: Constraints from GalileoMagnetometer Observations

Magnetic field perturbations measured during Galileo flybys of Europa and Callisto are consistent with dipole fields induced by the temporal variations of the ambient jovian magnetospheric field. These fields are close to those expected for perfectly conducting moons. We investigate the implications of these observations for the electrical structure of the moon’s interiors using a simple shell ...

What to Do When the Oceans Rise

This summer, Americans are experiencing climate change as record-breaking heat and drought. Our new normal, with its massive wildfires and severe storms, has given the whole nation a sense of the economic and social consequences of global warming that coastal communities around the world have been experiencing for decades. If you live near the sea, you’re probably witnessing the consequences of...

Do I have schizophrenia?