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postberg et al. - Coggle Diagram
postberg et al.
fig 2 (deep dive inside enceladus pg95)
detailed view of moon interior aquired
subsurface ocean covers entire moon
ocean between rocky, porous core, and frozen crust
ocean is 35km thick at equator, to <5km at south pole
volume of ocean ~1/10 the indian ocean
heat source unknown
likely lifeless if cycling between frozen and thawed
theories for heat source
radioactive decay
tidal friction
saturn's gravity flexes interior of enceladus, creating heat from friction
serpentinization
reactions between water and rock, could be boosted and extended by tidal friction
Fig 2 (deep dive inside enceladus pg94)
moon of saturn
icy
potential for extraterrestrial life
water and ice grains from beneath south pole
subsurface ocean discovered
jets contain mineral from core
silica particles most likely from hydrothermal vents
fig 1
enceladus
in saturn's E ring
E ring formed by enceladus's plumes
moon of saturn
~2 mil km away
fig 3
artist conception of hydrothermal vents
hydrothermal vents potentially form seafloor mineral deposits
signify hot interior
are hypothesized due to minerals leeched from core found in jets