Post by p***@gmail.comMitch, you ignoramus, it is the dark energy that is proposed to keep the
universe expanding in the first place...
No, dark energy is the current standard explanation (the “Λ” in the name
“ΛCDM model” of the current standard model of cosmology stands for it as
in an *already* *expanding* universe it has the same effect as the
cosmological constant in the EFEs) for the observed (positive)
*acceleration* of the expansion of our universe (instead of slowing down
which would be negative acceleration or, colloquially, deceleration).
Post by p***@gmail.comdo your due diligence before opening your steaming gob...
Hmmm.
<https://en.wikipedia.org/wiki/Dark_energy>
As for the claim in the Subject, see
<https://en.wikipedia.org/wiki/Dark_energy#Technical_definition>:
| The final component, dark energy, is an intrinsic property of space, and
| so has a constant energy density regardless of the volume under
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| consideration (ρ ∝ a⁰). Thus, unlike ordinary matter, it does not get
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| diluted with the expansion of space, leading to an accelerated expansion,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
| instead of the deceleration expected from a universe containing only
| ordinary matter.
To emphasize:
In the ΛCDM model, dark energy is _not_ a constant *energy*, but an energy
with a constant *density* (ρ = ∂E∕∂V). That is, as the universe is
expanding and therefore the volume V is increasing, the *total* dark energy
is *also* *increasing*, driving the (positive) *acceleration* of the
expansion.
PointedEars
--
Q: Who's on the case when the electricity goes out?
A: Sherlock Ohms.
(from: WolframAlpha)