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  2. Origin of water on Earth - Wikipedia

    en.wikipedia.org/wiki/Origin_of_water_on_Earth

    The origin of water on Earth is the subject of a body of research in the fields of planetary science, astronomy, and astrobiology. Earth is unique among the rocky planets in the Solar System in having oceans of liquid water on its surface. [2] Liquid water, which is necessary for all known forms of life, continues to exist on the surface of ...

  3. Empedocles - Wikipedia

    en.wikipedia.org/wiki/Empedocles

    Classical four elements: fire, air, earth and water Love and Strife as opposing physical forces Empedocles ( / ɛ m ˈ p ɛ d ə k l iː z / ; Greek : Ἐμπεδοκλῆς ; c. 494 – c. 434 BC , fl. 444–443 BC) was a Greek pre-Socratic philosopher and a native citizen of Akragas , a Greek city in Sicily .

  4. History of magic - Wikipedia

    en.wikipedia.org/wiki/History_of_magic

    Paracelsus often uses an egg to help describe the elements. In his early model, he wrote that air surrounded the world like an egg shell. The egg white below the shell is like fire because it has a type of chaos to it that allows it to hold up earth and water. The earth and water make up a globe which, in terms of the egg, is the yolk.

  5. List of earth deities - Wikipedia

    en.wikipedia.org/wiki/List_of_earth_deities

    An Earth god or Earth goddess is a deification of the Earth associated with a figure with chthonic or terrestrial attributes. There are many different Earth goddesses and gods in many different cultures mythology. However, Earth is usually portrayed as a goddess. Earth goddesses are often associated with the chthonic deities of the underworld. [1]

  6. Classical element - Wikipedia

    en.wikipedia.org/wiki/Classical_element

    The classical elements typically refer to earth, water, air, fire, and (later) aether which were proposed to explain the nature and complexity of all matter in terms of simpler substances. [1][2] Ancient cultures in Greece, Angola, Tibet, India, and Mali had similar lists which sometimes referred, in local languages, to "air" as "wind", and to ...

  7. Celtic Otherworld - Wikipedia

    en.wikipedia.org/wiki/Celtic_Otherworld

    The 'Land of the Ever Young' depicted by Arthur Rackham in Irish Fairy Tales (1920). In Celtic mythology, the Otherworld is the realm of the deities and possibly also the dead. In Gaelic and Brittonic myth it is usually a supernatural realm of everlasting youth, beauty, health, abundance and joy. [1] It is described either as a parallel world ...

  8. Witchcraft - Wikipedia

    en.wikipedia.org/wiki/Witchcraft

    Witchcraft, as most commonly understood in both historical and present-day communities, is the use of alleged supernatural powers of magic. A witch is a practitioner of witchcraft. Traditionally, "witchcraft" means the use of magic or supernatural powers to inflict harm or misfortune on others, and this remains the most common and widespread ...

  9. Hydrosphere - Wikipedia

    en.wikipedia.org/wiki/Hydrosphere

    Hydrosphere. The hydrosphere (from Ancient Greek ὕδωρ (húdōr) 'water' and σφαῖρα (sphaîra) 'sphere') [1][2] is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite. Although Earth 's hydrosphere has been around for about 4 billion years, [3][4] it continues to change in ...