I'm Jeff-Relf.Me, in Seattle, Early 2017, born in Seattle, 1960.
Our ·Observable· Universe began 13.8 giga·years ago.
The oldest light, from the CMBR, has a redshift (z) of 1088.
So, from our vantage point ( here/now, on earth ),
clocks then/there tick that much slower ( time dilation ),
and yardsticks are that much longer ( length contraction ).
In other words, our ＜past light cone＞ has a beginning,
beyond which, we can't see back any further.
We call that the cosmological horizon... look it up.
What's true for us, here and now,
is ·not· true for others, then and there.
How is it that older "black holes" are
a thousand times more massive than the younger ones ?
SDSS J0100+2802's black hole weighs in at 12 billion solar masses.
It has a redshift (z) of 6.3; it's 12.8 giga·years old
-- 900 million years after the Big Bang.
Astronomers have uncovered more than 200,000 of these "black holes"
dating as far back as 700 million years after the Big Bang.
Gravity is equal and opposite to
all other forms of "exergy" ( energy that can do work );
so, as other forms of exergy die, gravity dies with them.
The Universe is consuming eXergy --
same as you, me, and everyone/everything else.
Anything that consumes exergy is "alive";
e.g. trains, planes and automobiles.
So, notionally, everything is alive;
and, intrinsically, nothing is alive.
The less human something is, the less "alive" it is, people say.
Given that definition, you won't find alien visitors here on earth,
and you'll never believe that computers could become sentient.
As exergy is consumed, entropy increases --
i.e. everything smooths out, becoming less lumpy.
As matter dissipates ( per entropy ),
spacetime expands exponentially ( per General Relativity )
because spacetime is an extension of matter itself.
So your ＜past light cone＞ has a finite size, a beginning.
For those living near SDSS J0100+2802's
12 giga·solar·mass black hole, 12.8 giga·years ago,
the start of their past light cone ( their big bang )
began much earlier than the start of HUMANITY's big bang.
There's no way to prove it,
because you can't travel back in time;
still, it's sure to be true.
Einstein never believed in "black holes" and, now,
Steven Hawking doesn't either.
Quoting "Nature.COM", January 24, 2014,
Stephen Hawking: 'There are no black holes'.
Notion of an 'event horizon', from which nothing can escape,
is incompatible with quantum theory, physicist claims. ＞＞
Dark Energy is just entropy.
"wikipedia.org/wiki/Entropic_force" says: ＜＜
Other fundamental forces have been
argued recently to be entropic in origin,
including Coulomb's law, the electroweak
and strong forces, and dark matter and dark energy. ＞＞
Quoting "arxiv.org//abs/1009.1506": ＜＜
In Verlinde's entropic force scenario of gravity,
Newton's laws and Einstein equations can be obtained
from the first pinciples and general assumptions. ＞＞＜＜
The numerical result also yields an accelerated
expanding universe without invoking any kind of dark energy. ＞＞