There is Dark Matter and there is Light Matter, the two cancel each other out, therefore the Mass of the universe is exactly what it was at the Big Bang ....zero.

Hey!

This topic is all very interesting and to be honest I think humans will still be discussing it in millions of years to come. It's nature to speculate and one day we will hopefully have answers. But for now I'll leave you with this...

https://www.youtube.com/watch?v=X41bA4l-h0w

I wasn't referring to the muliverse (parallel universe) theory just the simpler  idea that out there somewhere there could have been another Big Bang with another universe maybe even hundreds/thousands.

The dark matter theory is a bit of a cobble up used to explain why there isn't enough 'normal' matter in the universe (about 25% of what is needed) to explain how the universe behaves. Dark matter (invisible matter) helps fill this gap but we have no proof beyond the basic theory that is even exists.

Do the galaxies need anything to "hold them together"?

Gravity plays a big part in "keeping things more or less in place"?

Meanwhile, current research is suggesting that 95% of all Stars that there will ever be have already been born.

http://www.wired.co.uk/news/archive/2012-11/07/star-production-down-97-percent

As I walk the dog at night, I look up at the myriad of Stars and in the Winter, I particularly look towards Orion and think of the beliefs the ancient Egyptians had about that constellation. "Below", I see Sirius twinkling and "changing colour".

I then get to wondering, probably as many who look to the Stars have done, just how big is the Universe?

If we accept that the Universe we know "began" with a bang, that event happened "somewhere" which must surely be "the centre of the Universe"?

If you "accept" that scenario, I wonder just where are we in relationship to either "the centre" or the furthest "edge"?????

Which "direction" should we look to even look towards the "centre"?

Forgetting the "centre" and looking back to Orion, during the Winter, it's interesting to see how our view of it "changes" as our perspective is changed by our orbit around the Sun.

Fascinating. Well, it would be if I could see the Stars and it wasn't for the fog tonight. 😞

Have a read of this

http://math.ucr.edu/home/baez/physics/Relativity/GR/centre.html

I do have the feeling that creationists can have little understanding of just how big the Universe is.

Yes, interesting, I've seen similar before.

However, "they" never explain or theorise how such a thing could happen.

Glibly trotting out that there was nothing there, no space, no time, no nothing just doesn't wash.

There had to be something there (or somewhere) otherwise there would have been nothing to cause a Big Bang.

My brain hurts..........

Why did there have to be something there before the big bang ?:|

If the sum of everything in the universe, energy matter, anti-matter, time, gravity and all the various particles adds up to zero then there was no need for anything to have been there nor for anything to have caused the big bang - it just happenned.

Explain how "nothing" can "just happen"?

If there is nothing, there's nothing, nowt, ziltch. Nothing can happen to or with nothing.

You say nothing can happen with nothing but the question has to be, why not?

Nothing is nothing. If something happened to "nothing", it wasn't nothing but it was something.

Now please answer the question:- How can "nothing" just happen to cause a Big Bang and create everything?

Look at it the other way round.

If as is hypothesised everything in the universe totals zero, nothing then putting it all together would give you nothing out of something.

If you can get nothing from something there is no reason you can't get something out of nothing.