If everything is in balance in the universe,
and if there is matter and antimatter, where is
gone all the antimatter? Is it out there, in a kind
of anti-universe made up of antimatter, with living
beings made up of anti particules? We'll never know
unless we build a telescope made-up of antimatters
and make up tools to translate antimatter darklight
into visible light for us human beings.
Currently the universe is expanding, galaxies
appearing to get further and further from each others
(light wave reaching us is turning to red due to
the Doppler effect (noise of a train approaching
then getting away once passed)). But because of
the supreme law of gravity, all those galaxies will
reverse way and come back onto a central point of
the universe, if and only if there is a lot of dark
matter in the visible universe. If there is so much
massive dark matter (like black holes) then the
density of the universe will be enough to have a
reverse move of the galaxies, back to one another.
If there is not much dark matter, then the universe
will expand infinitely.
Where is going all the matter that is swallowed
by black holes? Does it reappear anywhere else,
like new stars?