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  2. Astronomical symbols - Wikipedia

    en.wikipedia.org/wiki/Astronomical_symbols

    The earliest forms of these symbols appear in Greek papyrus texts of late antiquity. The Byzantine codices in which many Greek papyrus texts were preserved continued and extended the inventory of astronomical symbols. [2] [3] New symbols have been invented to represent many planets and minor planets discovered in the 18th to the 21st centuries.

  3. Cassiopeia (constellation) - Wikipedia

    en.wikipedia.org/wiki/Cassiopeia_(constellation)

    Best visible at 21:00 (9 p.m.) during the month of November. Cassiopeia (listen ⓘ) is a constellation and asterism in the northern sky named after the vain queen Cassiopeia, mother of Andromeda, in Greek mythology, who boasted about her unrivaled beauty. Cassiopeia was one of the 48 constellations listed by the 2nd-century Greek astronomer ...

  4. Archimedes - Wikipedia

    en.wikipedia.org/wiki/Archimedes

    Archimedes of Syracuse [a] (/ ˌ ɑːr k ɪ ˈ m iː d iː z / AR-kim-EE-deez; [2] c. 287 – c. 212 BC) was an Ancient Greek mathematician, physicist, engineer, astronomer, and inventor from the ancient city of Syracuse in Sicily. [3] Although few details of his life are known, he is regarded as one of the leading scientists in classical ...

  5. Sky - Wikipedia

    en.wikipedia.org/wiki/Sky

    The day 's blue sky, clouds and the Moon. The sky is an unobstructed view upward from the surface of the Earth. It includes the atmosphere and outer space. It may also be considered a place between the ground and outer space, thus distinct from outer space. In the field of astronomy, the sky is also called the celestial sphere.

  6. Astrolabe - Wikipedia

    en.wikipedia.org/wiki/Astrolabe

    An astrolabe (Greek: ἀστρολάβος astrolábos, 'star-taker'; Arabic: ٱلأَسْطُرلاب al-Asṭurlāb; Persian: ستاره‌یاب Setāreyāb) is an astronomical instrument dating to ancient times. It serves as a star chart and physical model of visible heavenly bodies.

  7. History of the Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/History_of_the_Greek_alphabet

    The history of the Greek alphabet starts with the adoption of Phoenician letter forms in the 9th–8th centuries BC during early Archaic Greece and continues to the present day. The Greek alphabet was developed during the Iron Age, centuries after the loss of Linear B, the syllabic script that was used for writing Mycenaean Greek until the Late ...

  8. Nicolaus Copernicus - Wikipedia

    en.wikipedia.org/wiki/Nicolaus_Copernicus

    It was probably on the latter occasion, in Kraków, that Copernicus submitted for printing at Jan Haller's press his translation, from Greek to Latin, of a collection, by the 7th-century Byzantine historian Theophylact Simocatta, of 85 brief poems called Epistles, or letters, supposed to have passed between various characters in a Greek story ...

  9. Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/Greek_alphabet

    This writing system, unrelated to the Greek alphabet, last appeared in the thirteenth century BC. In the late ninth century BC or early eighth century BC, the Greek alphabet emerged. [2] The period between the use of the two writing systems, during which no Greek texts are attested, is known as the Greek Dark Ages.