RESEARCH BASE
Search 3,721 documents across 34 fields — every claim tier-rated by evidence
3,633 are the core, quality-scored corpus (34 lettered sections — see How We Work); the remaining 88 are cross-corpus synthesis documents (68 InterDocs, 12 Connections, 8 Theories) also indexed here.
2,324 results for "Type Ia supernovae" — page 57 of 117
ZH_2_18 — Angkor Wat Astronomical Alignments
Angkor Wat — the vast Hindu-Buddhist temple complex in Siem Reap, Cambodia, built by King Suryavarman II between approximately 1113 and 1150 CE — is not only the largest religious monument on Earth (covering 162.6 hectar
ZH_2_08 — Astronomical Dating of Ancient Texts and Events
Astronomical dating — the use of recorded or described celestial events (eclipses, planetary conjunctions, solstice positions, heliacal risings, and precessional indicators) to fix the absolute dates of ancient texts and
ZH_2_12 — Agricultural Astronomy: Star-Based Planting and Harvest Calendars
Before modern calendars, weather services, and agricultural extension offices, farming communities worldwide used stellar observations to time their agricultural activities — planting, irrigation, harvesting, and animal
ZH_2_15 — Astronomical Time: Defining Days, Years, Hours, and the Second
The measurement and definition of time is humanity's oldest astronomical enterprise — and one that has undergone a radical transformation from celestial observation to atomic precision. The fundamental units derive from
ZH_1_15 — Star Catalogs: From Hipparchus to Hipparcos and the Tycho Catalog
A star catalog — a systematic list of stars with their positions, magnitudes, and sometimes colors, proper motions, and spectral types — is the foundational document of observational astronomy. The compilation of ever mo
ZH_1_01 — Archaeoastronomy: Discipline, Debates, and Cultural Astronomy
Archaeoastronomy is the interdisciplinary study of how past cultures understood, used, and integrated celestial phenomena — the motions of the sun, moon, planets, and stars — into their architecture, ritual practices, ag
ZH_1_04 — Nebra Sky Disk: Bronze Age Star Map Analysis
The Nebra sky disk (Himmelsscheibe von Nebra) is a bronze disk approximately 30 cm in diameter, decorated with gold-leaf appliqué representing the sun (or full moon), a crescent moon, stars (including a cluster interpret
ZH_1_13 — Bronze Age Astronomy: Alignments, Calendars, and Knowledge 2000–1000 BCE
The Bronze Age (broadly ~3300–1200 BCE, with regional variation) witnessed a decisive transformation in astronomical knowledge — from the horizon-based, monument-encoded astronomy of the Neolithic to the beginning of sys
ZH_1_23 — Giza Astronomical Alignments
The Giza pyramid complex — comprising the pyramids of Khufu (Great Pyramid, ~2560 BCE), Khafre (~2530 BCE), and Menkaure (~2510 BCE) on the Giza plateau west of Cairo — displays some of the most precise astronomical alig
ZH_1_09 — Astronomical Clocks and Mechanical Timekeeping
The intersection of astronomy and timekeeping produced some of humanity's most remarkable technological achievements: astronomical clocks — mechanisms that display not only the time of day but also the positions of the s
ZH_1_11 — Copernicus, Kepler, and the Astronomical Revolution
The astronomical revolution of the 16th and 17th centuries — transforming humanity's understanding of its place in the cosmos from an Earth-centered (geocentric) to a Sun-centered (heliocentric) model — is one of the mos
ZH_1_12 — Astronomical Instruments: Astrolabe, Armillary, Quadrant
The history of astronomical instruments — devices for measuring the positions, motions, and timing of celestial bodies — is inseparable from the history of astronomy itself. From the gnomon (the simplest shadow-casting s
ZH_1_10 — Transit of Venus: Political Astronomy and Global Science
A transit of Venus — when the planet Venus crosses the disk of the Sun as seen from Earth — is among the rarest of predictable astronomical events, occurring in a pattern of pairs separated by ~8 years, with the pairs se
ZH_1_07 — Antikythera Mechanism: World's First Astronomical Computer
The Antikythera mechanism is a corroded mass of bronze gears and inscribed plates recovered in 1901 from an ancient shipwreck off the Greek island of Antikythera, dated to approximately 60–70 BCE (though the mechanism it
ZH_1_05 — Eclipse Records: Astronomical Dating and Historical Anchors
Eclipse records — observations of solar and lunar eclipses preserved in ancient and medieval texts — are among the most scientifically valuable artifacts of pre-modern astronomy. Because eclipses are precisely calculable
C_1_15 — Oral Tradition Fidelity: How Accurately Do Myths Preserve Historical Facts?
Oral traditions have long been treated with skepticism by historians trained in text-based source criticism, yet mounting evidence suggests that under certain conditions, oral narratives can preserve accurate information
C_1_10 — Cosmic Egg and Cosmogonic Egg Myths
The Cosmic Egg (cosmogonic egg) — the idea that the universe, or a primordial being, emerged from an egg floating in the void or primordial waters — appears across an extraordinary range of unconnected cultures: Hindu (H
C_1_03 — Mother Goddess / Earth Goddess Pattern
The Mother Goddess or Earth Goddess archetype represents one of the most ancient, geographically widespread, and archaeologically attested religious patterns in human history, with material evidence stretching from Upper
C_1_08 — Twin Mythology — Duality, Doubling, and the Divine Pair
Twin mythology represents one of the most widely distributed narrative patterns in world religion — divine or semi-divine twins appear across every major cultural tradition: the Vedic Ashvins, Greek Dioscuri (Castor and
C_1_12 — Fire Symbolism, Sacred Flame, and the Theft of Fire
Fire is arguably the most transformative technology in human history — and the most universally sacralized natural phenomenon. The control of fire (~1.5 million years ago, Homo erectus) enabled cooking (which transformed
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