Home/Tag: cosmology

Cantong Qi: The Seal of the Unity of the Three

By |2020-07-24T03:36:41+03:00July 24th, 2020|Categories: Culture|Tags: , , , , , |

The Cantong qi is deemed to be the earliest book on alchemy in China. The title has been variously translated as Kinship of the Three, Akinness of the Three, Triplex Unity, The Seal of the Unity of the Three, and in several other ways. The [...]

Celestial Spheres – History and Visual Expressions

By |2020-04-13T12:11:02+03:00April 13th, 2020|Categories: Culture, Knowledge|Tags: , , , , , , , , , |

The celestial spheres, or celestial orbs, were the fundamental entities of the cosmological models developed by Plato, Eudoxus, Aristotle, Ptolemy, Copernicus, and others. In these celestial models, the apparent motions of the fixed stars and planets are accounted for by treating them as embedded in [...]

The Hollow Earth Hypothesis

By |2020-03-30T17:48:19+03:00March 30th, 2020|Categories: Culture, Knowledge|Tags: , , , , , , , |

The Hollow Earth is a concept proposing that the planet Earth is entirely hollow or contains a substantial interior space. Notably suggested by Edmond Halley in the late 17th century, the notion was tentatively disproven by Pierre Bouguer in 1740, and definitively by Charles Hutton [...]

The Almagest: A Mathematical and Astronomical Treatise

By |2019-08-24T03:43:51+03:00August 24th, 2019|Categories: Culture|Tags: , , , , , , , , , |

The Almagest is a 2nd-century Greek-language mathematical and astronomical treatise on the apparent motions of the stars and planetary paths, written by Claudius Ptolemy. The Almagest is of the most influential scientific texts of all time, it canonized a geocentric model of the Universe that [...]

Yggdrasil: A Mythical Tree in Norse Cosmology

By |2019-08-22T02:19:12+03:00August 22nd, 2019|Categories: Culture, Knowledge|Tags: , , , , , |

Yggdrasil is an immense mythical tree that plays a central role in Norse cosmology, where it connects the Nine Worlds. Yggdrasil is attested in the Poetic Edda, compiled in the 13th century from earlier traditional sources, and the Prose Edda, written in the 13th century by [...]