Kind: captions
Language: en
Lying just beneath everyday reality
is a world we hardly recognize.
A breathtaking world where much of what
we perceive about the universe
is wrong.
What if you took all this stuff away?
A world where the void of space is not
nothing but something. A world where
time can bend and flex. Why do we only
see events unfold in one direction? Why
don't we ever see them happen in reverse
order? According to the laws of physics,
this can happen.
It's a world that's come to light as we
probe the most extreme realms of the
cosmos. From black holes to the big bang
to the very heart of matter itself. I'm
going to have what he's having
here. Empty space can tee with ferocious
activity. Over the largest distances,
dark energy dominates the contents of
the universe, and we don't know what it
is.
Our universe might be one of numerous
parallel realities.
Somewhere there's a duplicate of you and
me and everyone else. The distinction
between past, present, and future may be
just an illusion.
Our experience of time is very much one
of the present, of the now. Physics does
radical violence to this everyday
experience of time.
[Music]
But how could this be? How could we be
so wrong about something so familiar?
Does it bother us? Absolutely.
There's no principle built into the laws
of nature that say that theoretical
physicists have to be happy.
That is the most bizarre thing of
quantum mechanics. It is impossible to
even comprehend. Don't even ask why.
Don't ask how it works. It's an illegal
question. All we can say is that is
apparently the way the world ticks.
Right this way, Mr. Green. It's a
game-changing perspective on the true
nature of reality that opens up a whole
new world of possibilities.
These are the guts of a quantum
computer. It can do more things at once
than there are elementary particles in
the universe.
It's a vision of the cosmos grounded
firmly in science, but one that
stretches the imagination. Is the
three-dimensional world an illusion?
What is space? We actually still don't
really know. It is one of the deepest
mysteries in physics.
As we examine the fabric of the cosmos
ever more closely, we may well find far
more surprises than anyone ever
imagined.
The Fabric of the Cosmos with Brian
Green on NOVA, premiering November 2nd
on PBS.