Last Updated：2025/11/20
(creationism, pseudoscience) The discredited theory that the speed of light has decreased over time, proposed by creationists in order to support the belief that the universe is a few thousand years old even though there are objects visible today that are billions of light years away (whereas a constant speed of light would indicate that the universe is billions of years old and so contradict this belief).
音声機能が動作しない場合はこちらをご確認ください
See correct answer
c-decay
Edit Histories（0）
Source Word
c-decay
Noun
uncountable
(creationism,
pseudoscience)
The
discredited
theory
that
the
speed
of
light
has
decreased
over
time,
proposed
by
creationists
in
order
to
support
the
belief
that
the
universe
is
a
few
thousand
years
old
even
though
there
are
objects
visible
today
that
are
billions
of
light
years
away
(whereas
a
constant
speed
of
light
would
indicate
that
the
universe
is
billions
of
years
old
and
so
contradict
this
belief).
Japanese Meaning
（創造論・疑似科学）光速が時間の経過とともに減少してきたという、現代では否定されている理論。宇宙が数千年の歴史しか持たないという創造論の主張を支持するために提案された考え方で、現在観測される数十億光年離れた天体の存在と矛盾する（一定の光速であれば、宇宙の年齢は数十億年となる）。
Sense（1）
(creationism,
pseudoscience)
The
discredited
theory
that
the
speed
of
light
has
decreased
over
time,
proposed
by
creationists
in
order
to
support
the
belief
that
the
universe
is
a
few
thousand
years
old
even
though
there
are
objects
visible
today
that
are
billions
of
light
years
away
(whereas
a
constant
speed
of
light
would
indicate
that
the
universe
is
billions
of
years
old
and
so
contradict
this
belief).
