Sky science
Astronomy
Direct answer
Astronomy is the scientific study of celestial objects, space, and the physical universe through observation, measurement, mathematics, and testable models.
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At a glance
- Found in
- Astronomy & Skywatching
- Related
- Skywatching, Celestial Sphere, Ecliptic, Altitude and Azimuth
Astronomy is the science of celestial objects, space, and the physical universe.
A scientific orientation to scale, light, or motion; the article supplies the precise definition.
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The story behind Astronomy
Astronomy grew from ancient observation and calendar keeping into a modern physical science supported by instruments, mathematics, spacecraft, and observatories.
A one-minute story
The Wandering Stars
How the moving planets were watched, named and found, and what a transit is.
Astronomy: fact and faith, kept distinct
Astronomy is a factual astronomy, calendar, Earth-science, cultural, or historical reference.
Why Astronomy matters
Astronomy gives an almanac its factual sky layer. It establishes where objects are, how their motions are measured, and which claims are observations rather than symbolic interpretations.
Astronomy in practice: an example
An astronomy entry can state the Moon's position and rise time without claiming what that position means for a person.
Where readings of Astronomy go wrong
The usual misreading is to call a symbolic reading astronomy or imply that scientific position data validates a spiritual prediction.
Sources and editorial method
Research references used for this entry include:
- U.S. Naval Observatory: Astronomical Almanac Glossary - Reference definitions for astronomical coordinates, events, calendars, and time scales.
- NASA Science: Skywatching FAQ - NASA guidance on observing stars, planets, constellations, and the changing night sky.
- Source
- The Great Almanac Dictionary
- Category
- Astronomy & Skywatching
- Last updated
- 2026-09-26
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More in Astronomy & Skywatching
- Dark Adaptation
- Gegenschein
- Light Pollution
- Orbital Elements
- Proper Motion
- Sidereal Period
- Sunspot
- Airmass
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Common questions
What is an astronomy?
Astronomy is the scientific study of celestial objects, space, and the physical universe through observation, measurement, mathematics, and testable models.
What do people get wrong about an astronomy?
The usual misreading is to call a symbolic reading astronomy or imply that scientific position data validates a spiritual prediction.
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