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Observational astronomy is
focused on
acquiring data from
observations of
astronomical objects. This data is then
analyzed using basic principles of physics...
- An
astronomical object,
celestial object,
stellar object or
heavenly body is a
naturally occurring physical entity, ****ociation, or
structure that exists...
- 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...
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Engineering on an
astronomical scale, or
astronomical engineering, i.e.,
engineering involving operations with
whole astronomical objects (planets, stars...
- astronomisch-historische Untersuchung,
meaning in English: The
Revelation to John: An
Astronomic Historical Investigation).
After intervention by the
Orthodox clergy,...
- An
astronomical clock, horologium, or
orloj is a
clock with
special mechanisms and
dials to
display astronomical information, such as the
relative positions...
- The
Prague astronomical clock or
Prague Orloj (Czech: Pražský
orloj [praʃskiː orloj]) is a
medieval astronomical clock attached to the Old Town Hall in...
- 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...
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distances to
celestial objects. A
direct distance measurement of an
astronomical object is
possible only for
those objects that are "close enough" (within...
