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Astronomy is a
natural science that
studies celestial objects and the
phenomena that
occur in the cosmos. It uses mathematics, physics, and chemistry...
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Astronomy is the
oldest of the
natural sciences,
dating back to antiquity, with its
origins in the religious, mythological, cosmological, calendrical...
- In
astronomy, an
epoch or
reference epoch is a
moment in time used as a
reference point for some time-varying
astronomical quantity. It is
useful for...
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Radio astronomy is a
subfield of
astronomy that
studies celestial objects at
radio frequencies. The
first detection of
radio waves from an astronomical...
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Babylonian astronomy was the
study or
recording of
celestial objects during the
early history of Mesopotamia. The
numeral system used, ****agesimal, was...
- of
astronomy is a list of
definitions of
terms and
concepts relevant to
astronomy and cosmology,
their sub-disciplines, and
related fields.
Astronomy is...
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Abell clusters. The new
redshift surveys revolutionized the
field of
astronomy by
adding depth to the two-dimensional maps of
cosmological structure...
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Amateur astronomy is a
hobby where parti****nts
enjoy observing or
imaging celestial objects in the sky
using the
unaided eye, binoculars, or telescopes...
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Galactic astronomy is the
study of the
Milky Way
galaxy and all its contents. This is in
contrast to
extragalactic astronomy,
which is the
study of everything...
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Astronomy &
Astrophysics (A&A) is a
monthly peer-reviewed
scientific journal covering theoretical, observational, and
instrumental astronomy and astrophysics...