What would happen if the
Universe stopped expanding?
By: Jashandeep Sarah 591705

Hypothesis

If the Universe stopped expanding or continued then
Humanity would be doomed because of multiple
fates that only lead to our extinction

Why is the Universe expanding anyways?

The Hubble Constant

The Hubble Constant

Right not the Universe is
expanding roughly 74.3 km
per second per megaparsec
( A megaparsec is roughly 3
million light years)

Edwin P. Hubble discovered the
Universe has been expanding
after an explosion that took
place 13.7 Billion years ago

The Big Bang

The Big Bang

The theory for the origin of
the Universe

12-14 Billion years ago the
Universe was a few mm across

Then there was a tremendous
explosion, which caused the
Universe back then to expand

Helium, Hydrogen and Lithium
were fused in the first few
minutes of the Big Bang

So it was a small extremely hot
spec of energy

This energy was pushed
out because of the big
explosion that happened

This energy then got spread
out and got cooler and cooler,
but the Universe got bigger
and bigger

Some proof we have to back
this up is radiation we find
in space which could be
remnants of the Big Bang

Also imaged heat of the Big Bang
in fine detail by Cobe and WMAP probes

What will happen to us

Based on the Big Crunch

Based on the Big Crunch

It would destroy the planet
because the Universe will collapse
and Earth will go into that hot super
dense state

So we would ultimately be wiped out,
however if we go through a miracle and live
there's more that will kill us

The Big Bang was roughly 10 Billion
degrees and Fire fighter suits can withstand
1000 degrees of heat, but not for long

Finally theirs radiation, which we couldn't
withstand while being beside a star as big as the sun
so we would die in seconds

So sadly we would die once we got into
that super dense state and wouldn't live
to see the Big Bang

Based on the Big Chill

Based on the Big Chill

The Universe expands forever
becoming cold, vast and dead

It would force us to conserve
resources since we would be too
far to try and get some from other
galaxies

However if this is the fate of
the Universe then we would die
from something else before looking for
resources in space

Like Global Warming is a big problem
right now and because of it we are
exposed to the sun's rays more, so
we could burn to death before the Chill

And if a genius finds the solution
to Global Warming and we conserve
resources, then there's always the time
bomb we orbit that could engulf us

Theories on what could happen

The Big Crunch

The Big Crunch

The Universe doesn't expand forever,
the direct consequence of the Big Bang

If the average density of
the Universe is enough to
stop expansion, the Universe
will collapse on itself

The Universe contracts and
all matter returns to a super
dense state

This might have already
happened and could be
the life cycle of the Universe,
it explodes, contracts, explodes
and etc

We can say this because
that super dense state could
be the Big Bang before it exploded

The Big Chill

The Big Chill

The Universe DOESN'T
stop expanding

The energy from the Big Bang
keeps spreading out for eternity

The Universe will get colder
and colder, since that energy
is so spread out

Planets, Stars and Galaxies
are very far apart from each other

Stars lose access to
raw material needed for
star formation

The last Stars go out,
and we lose light from space
because of how far we are apart