Explore: Astronomical

Observational astronomy is focused on acquiring data from observations of astronomical objects. This data is then analyzed using basic principles of physics

The astronomical unit (symbol: au or AU) is a unit of length defined to be exactly equal to 149597870700 m. Historically, the astronomical unit was conceived

An astronomical object, celestial object, stellar object or heavenly body is a naturally occurring physical entity, association, or structure that exists

The Astronomical League is an umbrella organization of amateur astronomy societies. Currently their membership consists of over 330 organizations across

The International Astronomical Union (IAU; French: Union astronomique internationale, UAI) is an international non-governmental organization (INGO) with

The Prague astronomical clock or Prague Orloj (Czech: Pražský orloj [praʃskiː orloj]) is a medieval astronomical clock attached to the Old Town Hall in

An astronomical clock, horologium, or orloj is a clock with special mechanisms and dials to display astronomical information, such as the relative positions

Engineering on an astronomical scale, or astronomical engineering, i.e., engineering involving operations with whole astronomical objects (planets, stars

question marks, boxes, or other symbols. Astronomical symbols are abstract pictorial symbols used to represent astronomical objects, theoretical constructs and

An astronomical survey is a general map or image of a region of the sky (or of the whole sky) that lacks a specific observational target. Alternatively