Last Updated：2025/11/21
(astronomy, astrophysics) A hypothetical form of energy which, it is supposed, is spread uniformly throughout space (and time) and has anti-gravitational properties: it represents a possible mechanism for the cosmological constant, and thus is one of the possible explanations for the current accelerating rate of expansion of the universe; and it is estimated to account for about 74% of the mass-energy of the universe.
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dark energy
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Source Word
dark energy
Noun
uncountable
(astronomy,
astrophysics)
A
hypothetical
form
of
energy
which,
it
is
supposed,
is
spread
uniformly
throughout
space
(and
time)
and
has
anti-gravitational
properties:
it
represents
a
possible
mechanism
for
the
cosmological
constant,
and
thus
is
one
of
the
possible
explanations
for
the
current
accelerating
rate
of
expansion
of
the
universe;
and
it
is
estimated
to
account
for
about
74%
of
the
mass-energy
of
the
universe.
Japanese Meaning
宇宙空間全体に均一に広がっていると考えられ、反重力的性質を持つ仮説上のエネルギー。宇宙定数のメカニズムの一つとして、現在の宇宙の加速膨張の説明に寄与し、宇宙の質量エネルギーの大部分を占める可能性がある。
Sense（1）
(astronomy,
astrophysics)
A
hypothetical
form
of
energy
which,
it
is
supposed,
is
spread
uniformly
throughout
space
(and
time)
and
has
anti-gravitational
properties:
it
represents
a
possible
mechanism
for
the
cosmological
constant,
and
thus
is
one
of
the
possible
explanations
for
the
current
accelerating
rate
of
expansion
of
the
universe;
and
it
is
estimated
to
account
for
about
74%
of
the
mass-energy
of
the
universe.
