{"/e/ancient-greek-astronomers/ptolemy/": {"t": "Ptolemy", "s": "Greco-Roman scholar who authored the Almagest and Geography."}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/geographer/": {"t": "Geographer", "s": "Geographers study Earth's environment and human society and their interactions."}, "https://codexery.com/historical-figures/e/notable/aristotle/": {"t": "Aristotle", "s": "Ancient Greek philosopher and polymath, founder of the Peripatetic school."}, "https://codexery.com/historical-figures/e/notable/euclid/": {"t": "Euclid", "s": "Ancient Greek mathematician, author of the Elements."}, "https://codexery.com/historical-eras/e/historical-eras/late-antiquity/": {"t": "Late antiquity", "s": "Period of transformation from classical antiquity to medieval worlds."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/great-circle/": {"t": "Great circle", "s": "The largest circle on a sphere, analogous to a straight line."}, "/e/ancient-greek-astronomers/theodosius-of-bithynia/": {"t": "Theodosius of Bithynia", "s": "Hellenistic astronomer and mathematician who wrote the Spherics."}, "/e/ancient-greek-astronomers/eudoxus-of-cnidus/": {"t": "Eudoxus of Cnidus", "s": "Ancient Greek astronomer and mathematician who pioneered concentric spheres."}, "https://codexery.com/historical-figures/e/notable/hipparchus/": {"t": "Hipparchus", "s": "Greek astronomer, geographer, and mathematician; founder of trigonometry and discoverer of the precession of the equinoxes."}, "https://codexery.com/philosophers-and-logicians/e/philosophers-and-logicians/posidonius/": {"t": "Posidonius", "s": "Greek polymath who spread Stoicism and studied tides."}, "https://codexery.com/explorers-of-the-americas/e/explorers-of-the-americas/pytheas/": {"t": "Pytheas", "s": "Greek explorer who first described the Arctic and midnight sun."}, "https://codexery.com/poets-of-the-ancient-world/e/poets-of-the-ancient-world/aratus/": {"t": "Aratus", "s": "Greek didactic poet known for his astronomical poem Phenomena."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/eratosthenes/": {"t": "Eratosthenes", "s": "Ancient Greek polymath who first measured Earth's circumference."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/lunar-eclipse/": {"t": "Lunar eclipse", "s": "A lunar eclipse occurs when the Moon passes through Earth's shadow."}, "https://codexery.com/geometry-and-shapes/e/geometry-and-shapes/sphere/": {"t": "Sphere", "s": "A sphere is a set of points equidistant from a center in 3D space."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/earth/": {"t": "Earth", "s": "The only known planet with liquid surface water and life."}, "https://codexery.com/named-stars/e/named-stars/sun/": {"t": "Sun", "s": "The Sun is the central star of the Solar System."}, "https://codexery.com/electromagnetism-and-waves/e/electromagnetism-and-waves/refraction/": {"t": "Refraction", "s": "Refraction redirects waves when they change speed between media."}, "https://codexery.com/constellations/e/constellations/aries/": {"t": "Aries", "s": "A mid-sized zodiac constellation representing a ram since late Babylonian times."}, "https://codexery.com/constellations/e/constellations/sagittarius/": {"t": "Sagittarius (constellation)", "s": "A zodiac constellation representing a centaur archer.", "i": "https://codexery.com/constellations/img/constellations/sagittarius.webp", "c": "John Flamsteed · Public domain"}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/pliny-the-elder/": {"t": "Pliny the Elder", "s": "Roman author and naturalist who wrote the encyclopedic Natural History and died rescuing others from Mount Vesuvius."}, "https://codexery.com/nonfiction-and-reference/e/part-1/natural-history-pliny/": {"t": "Natural History (Pliny)", "s": "The ancient encyclopedia that shaped natural history."}, "https://codexery.com/historical-figures/e/scientists/anaximander/": {"t": "Anaximander", "s": "Pre-Socratic philosopher who introduced the apeiron and advanced early science."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/metonic-cycle/": {"t": "Metonic cycle", "s": "19-year cycle aligning lunar phases with the solar year."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/ancient-greek-astronomy/": {"t": "Ancient Greek astronomy", "s": "Ancient Greek astronomy: from flat Earth to heliocentrism, the foundations of Western stargazing."}, "https://codexery.com/pharaohs-of-egypt/e/pharaohs-of-egypt/ptolemy-iii-euergetes/": {"t": "Ptolemy III Euergetes", "s": "Third pharaoh who expanded Ptolemaic power and issued the Canopus decree."}, "https://codexery.com/literary-forms-tropes/e/literary-forms-and-tropes/almanac/": {"t": "Almanac", "s": "A regularly published listing of current information arranged by calendar."}, "https://codexery.com/inventors/e/great-inventors/archimedes/": {"t": "Archimedes", "s": "Ancient Greek mathematician, physicist, engineer, astronomer, and inventor of Syracuse."}, "https://codexery.com/historical-figures/e/notable/catullus/": {"t": "Catullus", "s": "Latin neoteric poet of the late Roman Republic"}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/apollonius-of-perga/": {"t": "Apollonius of Perga", "s": "Ancient Greek geometer who defined conic sections."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/concentric-spheres/": {"t": "Concentric spheres", "s": "Ancient geocentric model using spheres centered on Earth."}, "https://codexery.com/legal-scholars-and-political-theorists/e/legal-scholars-and-political-theorists/plato/": {"t": "Plato", "s": "Foundational Western philosopher, student of Socrates, teacher of Aristotle.", "i": "https://codexery.com/legal-scholars-and-political-theorists/img/legal-scholars-and-political-theorists/plato.webp", "c": "Marie-Lan Nguyen · via Wikipedia: Plato · Public domain"}, "https://codexery.com/peninsulas-and-cape-landforms/e/peninsulas-and-cape-landforms/anatolia/": {"t": "Anatolia", "s": "Peninsula in West Asia, historic cradle of civilizations.", "i": "https://codexery.com/peninsulas-and-cape-landforms/img/peninsulas-and-cape-landforms/anatolia.webp", "c": "Anatolianist · CC BY-SA 4.0"}, "https://codexery.com/poets-of-the-ancient-world/e/poets-of-the-ancient-world/callimachus/": {"t": "Callimachus", "s": "Hellenistic poet, scholar, and librarian of Alexandria."}, "https://codexery.com/ancient-cities/e/ancient-cities/heliopolis-ancient-egypt/": {"t": "Heliopolis (ancient Egypt)", "s": "Ancient Egyptian city of the sun, home to the oldest surviving obelisk.", "i": "https://codexery.com/ancient-cities/img/ancient-cities/heliopolis-ancient-egypt.webp", "c": "Daniel Mayer · CC BY-SA 4.0"}, "https://codexery.com/science-and-technology/e/science-and-technology/meteorology/": {"t": "Meteorology", "s": "Study of Earth's atmosphere and weather forecasting."}, "https://codexery.com/european-scientific-pioneers/e/european-scientific-pioneers/richard-dedekind/": {"t": "Richard Dedekind", "s": "German mathematician who defined real numbers via Dedekind cuts."}, "https://codexery.com/set-theory-and-foundations/e/set-theory-and-foundations/axiom/": {"t": "Axiom", "s": "A foundational statement accepted as true without proof."}, "https://codexery.com/astronomy-space/e/astronomy-and-space/mercury-planet/": {"t": "Mercury (planet)", "s": "Smallest planet and closest to the Sun."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/venus/": {"t": "Venus", "s": "Earth's twin, hottest planet, shrouded in sulfuric acid clouds."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/mars/": {"t": "Mars", "s": "The fourth planet from the Sun, a desert world with polar ice caps."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/jupiter/": {"t": "Jupiter", "s": "Largest planet in the Solar System, a gas giant with a Great Red Spot."}, "https://codexery.com/classical-philosophy-rhetoric/e/classical-philosophy-and-rhetoric/nicomachean-ethics/": {"t": "Nicomachean Ethics", "s": "Aristotle's practical guide to achieving the good life."}, "https://codexery.com/stars-and-stellar-objects/e/stars-and-stellar-objects/constellation/": {"t": "Constellation", "s": "Patterns in the sky that guide stories and navigation."}, "https://codexery.com/philosophers-and-logicians/e/philosophers-and-logicians/proclus/": {"t": "Proclus", "s": "Greek Neoplatonic philosopher, one of the last major classical philosophers of late antiquity."}, "https://codexery.com/classical-mechanics-and-dynamics/e/classical-mechanics-and-dynamics/mechanics/": {"t": "Mechanics", "s": "Physics of force, matter, and motion among objects."}, "https://codexery.com/music-theory-and-composition/e/music-theory-and-composition/harmony-music/": {"t": "Harmony (music)", "s": "Harmony combines sounds to create musical ideas."}, "/e/ancient-greek-astronomers/hicetas/": {"t": "Hicetas", "s": "Pythagorean philosopher who held that the Earth rotates."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/heliocentrism/": {"t": "Heliocentrism", "s": "Superseded model placing Sun at universe's center."}, "https://codexery.com/education-schools/e/education-and-schools/platonic-academy/": {"t": "Platonic Academy", "s": "First Western institution of higher education, founded by Plato."}, "https://codexery.com/historical-figures/e/notable/hesiod/": {"t": "Hesiod", "s": "Ancient Greek poet, author of Theogony and Works and Days", "i": "https://codexery.com/historical-figures/img/notable/hesiod.webp", "c": "Yair Haklai · via Wikipedia: Hesiod · CC BY-SA 4.0"}, "https://codexery.com/historical-figures/e/notable/homer/": {"t": "Homer", "s": "Ancient Greek poet traditionally credited with the Iliad and the Odyssey"}, "https://codexery.com/cities/e/capitals/rome/": {"t": "Rome", "s": "The Eternal City, capital of Italy and cradle of Western civilization."}, "https://codexery.com/philosophical-movements-and-schools/e/philosophical-movements-and-schools/ancient-greek-philosophy/": {"t": "Ancient Greek philosophy", "s": "Ancient Greek philosophy shaped Western thought from its 6th century BCE origins."}, "/e/ancient-greek-astronomers/heraclides-ponticus/": {"t": "Heraclides Ponticus", "s": "Ancient Greek philosopher who proposed Earth's daily rotation."}, "https://codexery.com/scientists-and-mathematicians/e/scientists-and-mathematicians/nicolaus-copernicus/": {"t": "Nicolaus Copernicus", "s": "Renaissance polymath who proposed the Sun-centered model of the universe."}, "https://codexery.com/historical-figures/e/notable/cicero/": {"t": "Cicero", "s": "Roman statesman, orator, and philosopher who shaped Latin rhetoric and thought."}, "https://codexery.com/historical-figures/e/notable/diophantus/": {"t": "Diophantus", "s": "Greek mathematician, author of Arithmetica, often called the father of algebra."}, "https://codexery.com/astronomical-concepts-and-techniques/e/astronomical-concepts-and-techniques/zodiac/": {"t": "Zodiac", "s": "A celestial coordinate system dividing the ecliptic into 12 signs."}, "https://codexery.com/historical-figures/e/scientists/plutarch/": {"t": "Plutarch", "s": "Greek and Roman philosopher, historian, and priest of Apollo"}, "https://codexery.com/variable-stars/e/variable-stars/spica/": {"t": "Spica", "s": "Brightest star in Virgo, a close binary Beta Cephei variable."}, "https://codexery.com/named-stars/e/named-stars/beta-scorpii/": {"t": "Beta Scorpii", "s": "A multiple star system in Scorpius with six orbiting components."}, "https://codexery.com/classical-and-fluid-mechanics/e/classical-and-fluid-mechanics/precession/": {"t": "Precession", "s": "A change in the orientation of a rotating body's rotational axis."}, "https://codexery.com/orbits-and-celestial-mechanics/e/orbits-and-celestial-mechanics/equinox/": {"t": "Equinox", "s": "Twice-yearly moment when day and night are nearly equal worldwide.", "i": "https://codexery.com/orbits-and-celestial-mechanics/img/orbits-and-celestial-mechanics/equinox.webp", "c": "江戸村のとくぞう · CC0"}, "https://codexery.com/astronomical-concepts-and-techniques/e/astronomical-concepts-and-techniques/tropical-year/": {"t": "Tropical year", "s": "Time for Sun to return to same seasonal position."}, "https://codexery.com/astronomers-and-cosmologists/e/astronomers-and-cosmologists/callippus/": {"t": "Callippus", "s": "Greek astronomer and mathematician who refined planetary spheres and the lunisolar calendar."}, "https://codexery.com/ancient-mysteries/e/ancient-mysteries/the-antikythera-mechanism/": {"t": "The Antikythera Mechanism", "s": "The Antikythera mechanism is an ancient Greek hand-powered orrery, the oldest known analogue computer, used to predict astronomical positions and eclipses."}, "https://codexery.com/historical-figures/e/notable/aristophanes/": {"t": "Aristophanes", "s": "Ancient Greek comic playwright of Old Comedy."}, "https://codexery.com/phantom-places-discovery/e/phantom-places-and-discovery/surveying/": {"t": "Surveying", "s": "Surveying determines positions for maps, boundaries, and construction."}, "https://codexery.com/territories-of-the-republic-of-genoa/e/territories-of-the-republic-of-genoa/chios/": {"t": "Chios", "s": "Greek island known for mastic gum and medieval villages."}, "https://codexery.com/historical-figures/e/scientists/anaxagoras/": {"t": "Anaxagoras", "s": "Pre-Socratic philosopher who introduced Cosmic Mind and explained eclipses."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/great-year/": {"t": "Great Year", "s": "Ambiguous term for precession cycle or eternal return."}, "https://codexery.com/planets-and-dwarf-planets/e/planets-and-dwarf-planets/saturn/": {"t": "Saturn", "s": "Saturn is a gas giant with rings and the lowest density in the Solar System."}, "/e/ancient-greek-astronomers/meton-of-athens/": {"t": "Meton of Athens", "s": "Greek astronomer who devised the 19-year Metonic cycle."}, "https://codexery.com/greek-inventions/e/greek-inventions/gnomon/": {"t": "Gnomon", "s": "Stationary sundial part casting shadows to measure time and space."}, "https://codexery.com/philosophers-thinkers/e/philosophers-and-thinkers/thales-of-miletus/": {"t": "Thales of Miletus", "s": "Pre-Socratic philosopher, first to use natural reason over myth."}, "https://codexery.com/spiral-galaxies/e/spiral-galaxies/milky-way/": {"t": "Milky Way", "s": "The barred spiral galaxy containing the Solar System."}, "https://codexery.com/mythological-rapists/e/mythological-rapists/thyestes/": {"t": "Thyestes", "s": "A cursed king whose feast and rape defined a tragic lineage."}, "https://codexery.com/historical-figures/e/notable/vitruvius/": {"t": "Vitruvius", "s": "Roman architect and engineer, author of De architectura"}, "https://codexery.com/ancient-histories-and-epics/e/ancient-histories-and-epics/de-architectura/": {"t": "De architectura", "s": "Only surviving architectural treatise from antiquity, foundational for classical architecture."}, "https://codexery.com/ancient-cities/e/ancient-cities/miletus/": {"t": "Miletus", "s": "Ancient Greek city on the coast of Anatolia, cradle of philosophy and maritime power."}, "https://codexery.com/historical-figures/e/notable/democritus/": {"t": "Democritus", "s": "The laughing philosopher who developed atomism from Leucippus's ideas."}, "https://codexery.com/ancient-classical-texts/e/ancient-and-classical-texts/geography-ptolemy/": {"t": "Geography (Ptolemy)", "s": "A 2nd-century gazetteer and atlas foundational to later cartography."}, "https://codexery.com/branches-of-christianity/e/branches-of-christianity/catholic-church/": {"t": "Catholic Church", "s": "The largest Christian church, with 1.28 to 1.41 billion baptized members.", "i": "https://codexery.com/branches-of-christianity/img/branches-of-christianity/catholic-church.webp", "c": "via Wikipedia: Christianity by country · see source"}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/geocentrism/": {"t": "Geocentrism", "s": "Earth-centered model of the cosmos, dominant for over 1,500 years."}, "https://codexery.com/planets-stellar-astronomy/e/planets-and-stellar-astronomy/solar-system/": {"t": "Solar System", "s": "The Sun and all objects gravitationally bound to it.", "i": "https://codexery.com/planets-stellar-astronomy/img/planets-and-stellar-astronomy/solar-system.webp", "c": "via Wikipedia: Solar System · see source"}, "https://codexery.com/historical-eras/e/historical-eras/middle-ages/": {"t": "Middle Ages", "s": "The middle epoch between classical antiquity and the modern period.", "i": "https://codexery.com/historical-eras/img/historical-eras/middle-ages.webp", "c": "via Wikipedia: Middle Ages · see source"}, "https://codexery.com/governorates-of-egypt/e/governorates-of-egypt/sohag-governorate/": {"t": "Sohag Governorate", "s": "Upper Egyptian governorate with rich archaeology and high poverty."}, "https://codexery.com/ancient-empires/e/ancient-empires/roman-empire/": {"t": "Roman Empire", "s": "Medieval and early modern empire claiming direct Roman succession, dissolved in 1806."}, "https://codexery.com/ancient-empires/e/ancient-empires/macedonia-ancient-kingdom/": {"t": "Macedonia (ancient kingdom)", "s": "Ancient kingdom that became the dominant Hellenistic state."}, "https://codexery.com/historical-figures/e/notable/alexander-the-great/": {"t": "Alexander the Great", "s": "King of Macedon who created a vast empire from Greece to India."}, "https://codexery.com/historical-cultural-concepts/e/historical-and-cultural-concepts/pharaoh/": {"t": "Pharaoh", "s": "Monarch of ancient Egypt, intermediary between gods and people."}, "https://codexery.com/pharaohs-of-egypt/e/pharaohs-of-egypt/ptolemy-i-soter/": {"t": "Ptolemy I Soter", "s": "Macedonian Greek general who founded the Ptolemaic Kingdom in Egypt."}, "https://codexery.com/pre-columbian-empires/e/pre-columbian-empires/ptolemaic-kingdom/": {"t": "Ptolemaic Kingdom", "s": "The Greek-ruled Egyptian kingdom of the Ptolemies, from Ptolemy I in 305 BC to Cleopatra VII in 30 BC.", "i": "https://codexery.com/pre-columbian-empires/img/pre-columbian-empires/ptolemaic-kingdom.webp", "c": "via Wikipedia: Ptolemaic Kingdom · see source"}, "https://codexery.com/ethnic-groups/e/ethnic-groups/persians/": {"t": "Persians", "s": "An Iranian ethnic group indigenous to the Iranian plateau, native speakers of Persian, and founders of ancient empires."}, "https://codexery.com/astronomical-catalogues/e/astronomical-catalogues/star-catalogue/": {"t": "Star catalogue", "s": "Mapping the heavens: from clay tablets to billions of stars.", "i": "https://codexery.com/astronomical-catalogues/img/astronomical-catalogues/star-catalogue.webp", "c": "CielProfond · CC BY-SA 4.0"}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/geographic-coordinate-system/": {"t": "Geographic coordinate system", "s": "A spherical or geodetic coordinate system for measuring positions on Earth as latitude and longitude."}, "https://codexery.com/maps-their-symbols/e/maps-and-their-symbols/gazetteer/": {"t": "Gazetteer", "s": "A geographical index or dictionary used with maps."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/celestial-pole/": {"t": "Celestial pole", "s": "Fixed points in the sky around which all stars appear to rotate."}, "https://codexery.com/maps-their-symbols/e/maps-and-their-symbols/map-projection/": {"t": "Map projection", "s": "Mathematical transformation of a globe's surface onto a plane."}, "https://codexery.com/geometry-and-topology/e/geometry-and-topology/coordinate-system/": {"t": "Coordinate system", "s": "A system using numbers to determine positions in space."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/latitude/": {"t": "Latitude", "s": "Latitude specifies north-south position on Earth or celestial bodies.", "i": "https://codexery.com/lines-hemispheres/img/lines-and-hemispheres/latitude.webp", "c": "source: Pearson Scott Foresman, donated to the Wikimedia Foundation\nsvg conversion: Gregors\nColor: Jahobr · via Wikipedia: Latitude · Public domain"}, "https://codexery.com/history-of-imperial-china/e/history-of-imperial-china/silk-road/": {"t": "Silk Road", "s": "Network of routes linking East and West for centuries.", "i": "https://codexery.com/history-of-imperial-china/img/history-of-imperial-china/silk-road.webp", "c": "User:Kelvin Case\nUser:Turkish Flame\n\nUser:SmallJarsWithGreenLabels · via Wikipedia: Silk Road · CC BY-SA 4.0"}, "https://codexery.com/philosophical-concepts-and-theories/e/philosophical-concepts-and-theories/metaphysics/": {"t": "Metaphysics", "s": "Study of the most fundamental structure of reality."}, "https://codexery.com/historical-figures/e/notable/julius-caesar/": {"t": "Julius Caesar", "s": "Roman general, dictator, and author who transformed the Republic."}, "https://codexery.com/stage-legends/e/stage-legends/hume-cronyn/": {"t": "Hume Cronyn", "s": "Canadian-American stage legend and husband of Jessica Tandy"}, "https://codexery.com/historical-figures/e/notable/augustus/": {"t": "Augustus", "s": "Founder of the Roman Empire and its first emperor."}, "https://codexery.com/sieges-and-battles/e/sieges-and-battles/war-of-actium/": {"t": "War of Actium", "s": "The last civil war of the Roman Republic, ending with Octavian's victory and the rise of the Roman Empire."}, "/e/ancient-greek-astronomers/sosigenes-astronomer/": {"t": "Sosigenes (astronomer)", "s": "Ancient Greek astronomer consulted by Julius Caesar."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/celestial-spheres/": {"t": "Celestial spheres", "s": "Ancient Greek and medieval cosmological model of nested, rotating spheres carrying the planets and stars."}, "https://codexery.com/ancient-greek-astronomy/e/ancient-greek-astronomy/deferent-and-epicycle/": {"t": "Deferent and epicycle", "s": "Ancient geometric model explaining planetary retrograde motion via circles on circles."}, "https://codexery.com/philosophical-movements-and-schools/e/philosophical-movements-and-schools/stoicism/": {"t": "Stoicism", "s": "Ancient Greek philosophy emphasizing virtue and rational living."}, "/e/ancient-greek-astronomers/menelaus-of-alexandria/": {"t": "Menelaus of Alexandria", "s": "Greek mathematician who first recognized geodesics on curved surfaces."}, "https://codexery.com/historical-eras/e/historical-eras/hellenistic-period/": {"t": "Hellenistic period", "s": "Era of Greek cultural expansion after Alexander the Great's conquests."}, "https://codexery.com/capital-cities-of-africa/e/capital-cities-of-africa/tripoli-libya/": {"t": "Tripoli, Libya", "s": "Capital and largest city of Libya, on the Mediterranean coast."}, "https://codexery.com/astronomical-concepts-and-techniques/e/astronomical-concepts-and-techniques/spherical-astronomy/": {"t": "Spherical astronomy", "s": "Oldest branch of astronomy, locating objects on the celestial sphere."}, "/e/ancient-greek-astronomers/autolycus-of-pitane/": {"t": "Autolycus of Pitane", "s": "Author of the earliest fully preserved Greek mathematical work."}, "https://codexery.com/stars-of-virgo/e/stars-of-virgo/eta-virginis/": {"t": "Eta Virginis", "s": "Triple star system in Virgo, visible to the naked eye."}, "https://codexery.com/great-collapses/e/great-collapses/the-library-of-alexandria/": {"t": "The Library of Alexandria", "s": "Ancient world's largest library, center of Hellenistic learning."}, "https://codexery.com/ancient-inventions/e/ancient-inventions/armillary-sphere/": {"t": "Armillary sphere", "s": "A spherical framework of rings modeling the celestial sphere."}, "https://codexery.com/astronomers-and-cosmologists/e/astronomers-and-cosmologists/aristarchus-of-samos/": {"t": "Aristarchus of Samos", "s": "Ancient Greek astronomer who first proposed a Sun-centered universe."}, "https://codexery.com/lines-hemispheres/e/lines-and-hemispheres/longitude/": {"t": "Longitude", "s": "The east-west coordinate that, with latitude, pinpoints any location on Earth.", "i": "https://codexery.com/lines-hemispheres/img/lines-and-hemispheres/longitude.webp", "c": "Original:  Pearson Scott Forman Vector:  Gregors · via Wikipedia: Longitude · CC BY-SA 3.0"}}