More on the Big Bang - what was before t = 0?

[Catastrophe]

In wider terms,

The average size of a galaxy is between 3,000 and 300,000 light-years in diameter. The Milky Way is an example of an average-sized galaxy, with a diameter of about 100,000 light-years.

Although the Milky Way may be included within "average", it is well towards the upper end, being about 33 times the lower limit (100/3), but one only one third (100/300) the upper limit.

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[Catastrophe]

I consider our galaxy to be young and new galaxies can still be created. If my theory of matter always existed there never was 0=0. Something cannot come from nothing 0 will always be 0 nothingness but as we start to discover super mega galaxies I am almost certain we are a small galaxy and since we are approaching another galaxy we are actually on the cooling period of the Big Bang which explains the vast distances between galaxies

Yes, the Milky Way is approaching the Andromeda galaxy:

• Speed
  The two galaxies are moving toward each other at a speed of about 68 miles per second (110 kilometers per second).
  
  
  
• Prediction
  NASA astronomers predicted in 2012 that the galaxies would collide in about four billion years.

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