The sites that I had referenced:
Even if a website says that the Big Bang theory says that stuff came from nothing, that doesn't mean that the actual Big Bang Theory say that it came from
nothing, which it doesn't.
The nasa site said: "Most importantly, this meant that there must have been an instant in time (now known to be about 14 billion years ago) when the entire Universe was contained in a single point in space." How could there be an instant in time? Time did not exist. How could there be a point in space? When space itself did not exist.
That's just poor wording. You shouldn't use a webpage that is
describing a theory as the actual theory itself.
The singularity would have been all of space and all of time in one point. That point is the point in spacetime that the singularity existed "in". Spacetime didn't
not exist at all, it was just in a different state and different position than it is now.
Space.com says: "The Big Bang is often thought as the start of everything, including time." What is not included in everything?
Again, you shouldn't use a website's paraphrasing as the literal theory.
I presume that the singularity, itself, would not be included in that
everything as the Big Bang did not start the singularity. The singularity was there "before" the "bang".
If there was No:
Space
Time
Particles
Matter
Energy
What was there and where was it?
Time is just another dimenstion, like space is, so we can refer to them both as spcetime. At the singularity, spacetime didn't
not exist, it all existed at one point.
Particles and matter came later, after the Big Bang.
I think Energy was present at the singularity.
The only way I see they could collide would be if they started in opposite directions and the universe is a sphere and one goes clockwise and the other counter clockwise then they could meet but it would take a lot longer than 20 billion years.
I believe you that that is the only way that
you can see it happening, but that is not the only possible way of it happening.
The only other possibility would be that they started at a small degree of angle difference which grew to a very large difference then something changed their direction so as to make them angle back together to meet at a point in the future.
Right. GRAVITY.
It wouldn't have been a sudden change in direction though. It would have gradually been curving their trajectories closer and closer towards each other.
If that took place how much force would have to be applied to a galaxy as large as either the Milky Way or Andromedia to change their course considering the speed at which the two large masses are traveling. Sounds possible but not probable.
The larger the mass the more gravity and the more force so it is entirely possible.