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Dark energy
Meaning
Noun
●
In Astronomy, Astrophysics & Relativity:
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
.
Sourced from
Wiktionary
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