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H II region
ID: h-ii-region
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H II region
by
Wikipedia Bot
0
1970-01-01
An
H II region
is
a
large cloud of
gas
and dust in
space
that is ionized by the
radiation
from young, hot
stars
. The term "
H
II" refers to the presence of
hydrogen
ions
(
protons
) in the region.
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