Toroid
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The Hubble Space Telescope has spotted geysers on Europa. 
Geysers On Europa: NASA Finds More Evidence Of Water Plumes On Jupiter Moon
List of Jupiter's Moons: List of Jupiter's moons - Simple English Wikipedia, the free encyclopedia
Geysers On Europa: NASA Finds More Evidence Of Water Plumes On Jupiter Moon
List of Jupiter's Moons: List of Jupiter's moons - Simple English Wikipedia, the free encyclopedia