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    • Aidynbek Mussa

      Результаты олимпиады   06/05/2019

      Внимание участники!  Уже известны результаты первой онлайн-олимпиады от нашего сообщества. Прикрепляю файл с результатами внизу Результаты олимпиады по географии - Лист1.pdf 

The Galilean moons quick summary

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Galilean moons are the four largest moons of Jupiter—Io, Europa, Ganymede, and Callisto. They are named after lovers of Zeus (Jupiter).

  1. Io - the most volcanically active body in the solar system. Io's surface is covered by sulfur. Jupiter's immense gravity causes 100m "tides" on its surface, but instead of water we have ground literally breaking apart. Volcanoes are driven by hot silicate magma.
  2. Europa - mostly water ice with hypothetical ocean beneath it. Europa contains twice as much water than Earth does and may contain life too
  3. Ganymede -  Ganymede is a guy, so Zeus is gay. The largest moon in the solar system and is the only moon known to have its own magnetic field. May have underground oceans too
  4. Callisto - extremely heavily cratered and very old. Has a very small degree of current surface activity

Io, Europa, and Ganymede have a layered structure (meaning they have a core, mantle, crust, etc.). Layering on Callisto is less well defined (like on our moon, but a little bit better).

Heat for keeping Europa's and Ganymede's underground oceans liquid comes from the core and from "tidal" forces too.

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