Astronomy
Cross-traditionAstronomical factEditorial synthesis
Definition
The natural science that studies celestial objects and phenomena through observation, measurement, and physical theory. Astronomy is measurable and testable; it is distinct from astrology, which is interpretive.
In more depth
Astronomy describes where celestial bodies are and how they move: knowledge that is checked against observation. For example, the International Astronomical Union defines 88 official constellations with precise boundaries, and the slow wobble of Earth's axis (precession) is measured at a cycle of roughly 25,800 years.[1][2]
Historically the two fields were often practised together (Babylonian scholars kept systematic observational records alongside celestial divination), but they are separate endeavours today, and this platform always labels which kind of statement is being made.[3]
References
Numbered citations in the text link to the records below; each record links to the full source registry.
- International Astronomical Union. The Constellations (official list of the 88 IAU constellations). current (living reference page). Astronomical fact View source record
- NASA Science. Milankovitch (Orbital) Cycles and Their Role in Earth's Climate. 2020 (last updated 2024). Astronomical fact View source record
- Francesca Rochberg. The Heavenly Writing: Divination, Horoscopy, and Astronomy in Mesopotamian Culture. Cambridge University Press. 2004. Historical scholarship View source record