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  2. Purple Earth hypothesis - Wikipedia

    en.wikipedia.org/wiki/Purple_Earth_hypothesis

    The Purple Earth Hypothesis (PEH) is an astrobiological hypothesis, first proposed by molecular biologist Shiladitya DasSarma in 2007, [1] that the earliest photosynthetic life forms of Early Earth were based on the simpler molecule retinal rather than the more complex porphyrin-based chlorophyll, making the surface biosphere appear purplish ...

  3. Earth (classical element) - Wikipedia

    en.wikipedia.org/wiki/Earth_(classical_element)

    Earth is one of the four classical elements in ancient Greek philosophy and science. It was commonly associated with qualities of heaviness, matter and the terrestrial world. Due to the hero cults, and chthonic underworld deities, the element of earth is also associated with the sensual aspects of both life and death in later occultism.

  4. Atlas (mythology) - Wikipedia

    en.wikipedia.org/wiki/Atlas_(mythology)

    Atlas and the Hesperides by John Singer Sargent (1925).. The etymology of the name Atlas is uncertain. Virgil took pleasure in translating etymologies of Greek names by combining them with adjectives that explained them: for Atlas his adjective is durus, "hard, enduring", [9] which suggested to George Doig that Virgil was aware of the Greek τλῆναι "to endure"; Doig offers the further ...

  5. Classical element - Wikipedia

    en.wikipedia.org/wiki/Classical_element

    Earth (South) represents the youth cycle, summer, the Indigenous race, and cedar medicine. Fire (East) represents the birth cycle, spring , the Asian race, and tobacco medicine. Wind/Air (North) represents the elder cycle, winter , the European race, and sweetgrass medicine.

  6. History of magic - Wikipedia

    en.wikipedia.org/wiki/History_of_magic

    The one who creates the illusion of picking cucumbers should not be condemned, only the one who actually picks the cucumbers through magic. Although magic was forbidden by Levitical law in the Hebrew Bible , it was widely practised in the late Second Temple period , and particularly well documented in the period following the destruction of the ...

  7. Purple - Wikipedia

    en.wikipedia.org/wiki/Purple

    Purple has long been associated with royalty, originally because Tyrian purple dye—made from the secretions of sea snails—was extremely expensive in antiquity. [1] Purple was the color worn by Roman magistrates; it became the imperial color worn by the rulers of the Byzantine Empire and the Holy Roman Empire , and later by Roman Catholic ...

  8. Magic circle - Wikipedia

    en.wikipedia.org/wiki/Magic_circle

    A magic circle is a circle of space marked out by practitioners of some branches of ritual magic, which they generally believe will contain energy and form a sacred space, or will provide them a form of magical protection, or both. It may be marked physically, drawn in a material like salt, flour, or chalk, or merely visualised.

  9. Empirical evidence for the spherical shape of Earth - Wikipedia

    en.wikipedia.org/wiki/Empirical_evidence_for_the...

    But because Earth is spherical, in reality it will have travelled along three sides of a triangle, and arrive back very close to its starting point. If the starting point is the North Pole, it would have travelled due south from the North Pole to the equator, then west for a quarter of the way around Earth, and then due north back to the North ...