{"/e/part-1/parsec/": {"t": "Parsec", "s": "Unit of distance defined by one arcsecond of parallax.", "i": "https://codexery.com/planets-stellar-astronomy/img/part-1/parsec.webp", "c": "via Wikipedia: Parsec · see source"}, "https://codexery.com/planets-and-dwarf-planets/e/part-1/earth/": {"t": "Earth", "s": "The only known planet with liquid surface water and life."}, "https://codexery.com/stars-and-stellar-objects/e/part-1/cosmic-distance-ladder/": {"t": "Cosmic distance ladder", "s": "A sequence of methods for measuring distances to celestial objects."}, "https://codexery.com/science-measurement/e/part-1/microscope/": {"t": "Microscope", "s": "Instrument for viewing objects invisible to the naked eye.", "i": "https://codexery.com/science-measurement/img/part-1/microscope.webp", "c": "Chad Anderson, staff photographer for SFO Museum · CC BY-SA 2.0"}, "https://codexery.com/phantom-places-discovery/e/part-1/surveying/": {"t": "Surveying", "s": "Surveying determines positions for maps, 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{"t": "Brown dwarf", "s": "Substellar objects that fuse deuterium but not hydrogen."}, "https://codexery.com/ancient-greek-astronomy/e/part-1/heliocentrism/": {"t": "heliocentrism", "s": ""}, "https://codexery.com/ancient-greek-astronomy/e/part-1/geocentrism/": {"t": "geocentrism", "s": ""}, "https://codexery.com/scientists-and-mathematicians/e/part-1/aryabhata/": {"t": "Aryabhata", "s": "First major mathematician-astronomer of classical Indian science."}, "https://codexery.com/scientists-and-mathematicians/e/part-1/nicolaus-copernicus/": {"t": "Nicolaus Copernicus", "s": "Renaissance polymath who proposed the Sun-centered model of the universe."}, "https://codexery.com/historical-figures/e/notable/isaac-newton/": {"t": "Isaac Newton", "s": "English polymath who formulated laws of motion and universal gravitation."}, "https://codexery.com/historical-figures/e/scientists/giordano-bruno/": {"t": "Giordano Bruno", "s": "Italian philosopher burned at the stake for heresy."}, 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