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Protoplanetary disc
A
protoplanetary disc
(
proplyd
) is a
disc
of
dust
and
gas
which
orbits
a
protostar
, within a
solar nebula
. Such discs eventually
condense
into either
asteroid belts
,
moons
, or
planets
.
See also:
accretion disc
planetesimal
protoplanet
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