A violent and sudden inflation from
darkness to our current bright night sky
A mighty event that's at the birth of
our universe. Not just a tiny moment in
time but a still ongoing event of
creation. As of today we will see the
expansion of our universe that was once
created by the Big Bang. In this two-part
special we will dive into the moment
this dramatic event took place and will
theorize what was before the creation of
our known universe. It's all about before
and after the Big Bang.
Our universe
contains the most dramatic and beautiful
things you can imagine. We have billions
of stars,
planets, galaxies and dust clouds in all
sizes and different matter. From the
bright Sun to black holes it all came
together in one epic event. Some things
aren't even possible for us humans to
put into perspective
13.8 billion years ago, the birth of our
universe took place. An event we call the
Big Bang. It's an explanation of how our
universe was created. Before we go on
this violent journey, we must understand
what a singularity is. This is an event
in which property is infinite just like
a black hole. The more gravity you have
in a location the more it bends space.
When you bend space you also bend the
distance between point A and B. Bending
point A and B would also bend time. If
there is so much gravity in one place
very strange things start to happen
Gravity is crushing everything in to
such a dense state this is called
infinite gravity. Gravity is pulling
everything into an infinite density. You
now have a singularity. A mind-bending
event in which the current laws of
physics do not apply anymore to this
region of space
Our universe was once a very small
singularity before it stretched over
13.8 billion years to the universe we
can now observe. The Big Bang was not an
explosion but an event in which space
expanded out of an infinite singularity
To this current day our known universe
is still stretching and when Hubble
figured out that other galaxies formed
by the Big Bang were moving away from
our galaxy, the galaxies that are further
away from us move faster than the ones
that are close to us. It means that the
universe is still expanding. We know
everything around our solar system moves
away. So at one point everything had to
be very very close together. But let's go
back to the beginning
Because everything was extremely close
together, it was a very hot place. At the
start of this Big Bang we have had a
dramatic moment which we call Planck
time. This is 10 million trillion
trillion trillion trillionth of a second
At this moment the temperature reached
100 million trillion trillion degrees
Within a second the universe expanded
very fast. After that second the
temperature cooled down to 100 billion
degrees. After just one second all the
manner created by this event were
protons and neutrons. It only took about
13 seconds before the temperature
dropped further to 3 billion degrees
We fast forward to 700,000 years later.
An important moment in which the
temperature dropped enough to form the
first atoms; the building block for
ordinary matter.
Atoms can merge together to create
molecules that form almost anything
around us. But how do we know all of this?
It's not like we had first row seat
tickets to watch this unimaginable event
happen
it's like a water drop that falls in the
water. We study the ripples created in
the water to understand where this
ripple originated from scientists study
everything around us to understand at
which point this event took place. An
important part in the understanding of
the Big Bang is the speed in which
galaxies are moving. Some galaxies move
at unbelievably high speeds of at least
100,000 kilometers a second. When you
look far away in the universe there's so
much more you can see. You can even go
back in time. Humans made highly advanced
telescopes which are able to see very
far. When the universe was created by the
Big Bang this sudden expansion created
an enormous amount of light. Scattering
through the universe. Because our
universe is stretching the light is
stretched into microwaves. With a
microwave telescope we are able to
observe ancient light all the way back
to the beginning of our universe. Light
plays a vital role in understanding when
everything we know was created.
We have these telescopes so we can look
at space billions of light-years away.
Because it takes so long for light to
reach us, we are looking into the past
and are seeing that dust clouds created
by the Big Bang. As if it just happened
We have a lot of tools to make complex
mathematical equations that explain the
burning question of how our universe was
created. But why aren't we able to see
the exact start of the Big Bang. Just
like the clouds we are able to see 13
billion light years away. Let's use our
imagination. You're standing on Earth but
there is no light, it's completely dark,
no way for your eyes to adjust. The Sun
is the start of the universe. But the Sun
also has no light
You are literally observing the start of
our universe in the darkness.
At the creation of our universe there
was no light. Light literally didn't
exist yet, so you will never be able to
see the start of our universe. It's
hidden behind the clouds of darkness.
It's still a difficult thing to realize, 
it all started from nothing
because what is before nothing? If you
identify nothing isn't it then
automatically something?
In the next episode we will theorize
what happens before the Big Bang. Feel
free to subscribe so you don't miss the
next part.
Thank you for watching we have given you
a small look into this subject. We might
have missed something. We might have
gotten something wrong. Let us know what
your thoughts are. We hope you stay
around for another episode
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