If the big bang was a point source, and everything has expanded outward for the past 16 billion years, where is our galaxy in relation to the original point source versus the outer perimeter of the expanding universe? Is it possible to determine that?
by 
Tripper
ANSWERS: 3
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This is a common question based on a misconception. The big bang did not happen at some particular point in space. Space itself is what emerged from the explosion, along with its content of particles and energy. The most common analogy is think of an inflating balloon, with the galaxies painted on as dots on the rubber surface. As the balloon expands the galaxies fly apart from one another, each seeing the others receding from itself. Now try to imagine a 4-dimensional balloon with all of 3-dimensional space forming it's surface.
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check out ... http://www.universetoday.com/
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they talk about the source point being infinitely small but as the nothingness b4 the bigbang was infinitely big there wood have been no size comparison. things are only given a size mathematically in comparison to human beings which is pretty naive i say.we seem to think that the universe is extremely large but as there is no perimeter to how big something can be then it is still possibly infinitely small.
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