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

Theories on what could happen

The Big Chill

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

Stars lose access to raw material needed for star formation

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

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

The energy from the Big Bang keeps spreading out for eternity

The Universe DOESN'T stop expanding

The Big Crunch

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

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

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

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

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

What will happen to us

Based on the Big 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

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

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

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

The Universe expands forever becoming cold, vast and dead

Based on the Big Crunch

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

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

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

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

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

Why is the Universe expanding anyways?

The Big Bang

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

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

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

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

So it was a small extremely hot spec of energy

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

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

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

The theory for the origin of the Universe

The Hubble Constant

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

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

Hypothesis

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