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Additional
Planetary system
English Wikipedia - The Free Encyclopedia
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Planetary system
A
planetary system
is a set of
gravitationally
bound non-stellar objects in
orbit
around a
star
or
star system
. Generally speaking, systems with one or more
planets
constitute a planetary system, although such systems may also consist of bodies such as
dwarf planets
,
asteroids
,
natural satellites
,
meteoroids
,
comets
,
planetesimals
and
circumstellar disks
. The
Sun
together with its planetary system, which includes
Earth
, is known as the
Solar System
. The term
exoplanetary system
is sometimes used in reference to other planetary systems.
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