Post by Edward Prochak
Dark Matter seems to be an effect on a Galactic scale,
Holding galaxies and clusters together.
Dark energy seems to be an effect on a cosmic scale,
driving the universe apart.
So definitely not equal in magnitude.
The Milky Way was our "Known Universe", 100 years ago.
Our inability to properly/precisely measure dark energy
doesn't shed much light on reality.
In physics, entropy is how evenly heat/matter are distributed.
Our hot/dense sun evaporates into the cold/sparse vacuum,
losing 4.3 million tons each second.
Our Universe is going from infinitely hot/dense to infinitely cold/sparse.
"God" (nature) programmed us to ride this wave
( i.e. to sustainablely consume residual exergy ), same as the sun.
12.5 billion years ago, quasar J2157-3602 had
the luminosity of 695 trillion suns ( 2.66×10^41 Watts ).
695 trillion suns.
Lambda, the cosmological "constant", is growing.
Compared to the concordance model ( Lambda-CDM ), the Big Rip
now seems more likely, given recent evidence from "the quasar era"
that shows that the (growing) Hubble "Constant" was then LESS (72.5)
than one at the ( cosmologically older ) "Type Ia supernova era" (73.24),
and MORE than the one at the CMBR (67.66), near the start of the Big Bang.
" Is Dark Energy Getting Stronger ? ", by PBS Space Time, Mar 20, 2019: