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
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 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
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
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 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 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