Last Updated：2025/12/06
(astronomy) A type of galaxy, found in the local universe, that are active, undergoing high rates of star formation, which provides a green tinge, and are compact, visually appearing akin to peas. These active galaxies have strong oxygen emission lines and no active galactic nucleus (“AGN”), similar to small galaxies in the distant early universe, but unlike those in the nearby contemporary universe.
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green pea galaxy
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Source Word
green pea galaxy
Noun
(astronomy)
A
type
of
galaxy,
found
in
the
local
universe,
that
are
active,
undergoing
high
rates
of
star
formation,
which
provides
a
green
tinge,
and
are
compact,
visually
appearing
akin
to
peas.
These
active
galaxies
have
strong
oxygen
emission
lines
and
no
active
galactic
nucleus
(“AGN”),
similar
to
small
galaxies
in
the
distant
early
universe,
but
unlike
those
in
the
nearby
contemporary
universe.
Japanese Meaning
近傍宇宙に存在する、アクティブで急速な星形成活動を示す銀河の一種。酸素の強い放射線線が観測され、活性銀河核（AGN）は存在しない。コンパクトで、豆（ピー）のような外観と緑がかった色調を特徴とする。
Sense（1）
(astronomy)
A
type
of
galaxy,
found
in
the
local
universe,
that
are
active,
undergoing
high
rates
of
star
formation,
which
provides
a
green
tinge,
and
are
compact,
visually
appearing
akin
to
peas.
These
active
galaxies
have
strong
oxygen
emission
lines
and
no
active
galactic
nucleus
(“AGN”),
similar
to
small
galaxies
in
the
distant
early
universe,
but
unlike
those
in
the
nearby
contemporary
universe.
（ plural ）
