Thomas Jefferson
"Hagar" wrote in message
...

I am still confused about seeing these images from the past. Take the BB,
for instance. It's image has been traveling radially at the speed of
light
ever since it happened. Shortly after the BB, physical matter started to
slow down and began to clump together, thus further slowing down.

And then it started to speed up again and expand.

Along the
way, about 8 billion years later, Earth formed. By my estimation, the
image
of the BB has traveled way beyond the Earth, the edge of the visible
Universe, even and is lost forever, at least as a pictorial visual. It is
almost as if someone shoots a pistol, then taking off running in the same
direction and claiming to catch the bullet just before it hits the ground.

Just like the light we see from the next closet star is something like 4
years behind it is now. We will not see a real time image, but something
that happened far in the past.

As far as the background emissions, I think that the Universe wants to be
at
the absolute Zero, but the combined radiation of the billions of galaxies
is
enough to keep the ambient galactic temperature at about 3.5 or so degrees
above zero. As they are receding from each other, that is very slowly
dropping towards zero, and by the time the last stars blip out into
oblivion, everything will stop.