30. If the big bang theory is true, what caused the ball to explode, and what was outside the ball? (A K2S Question)

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The big bang theory is true. There are five key lines of evidence to support it. Scientists do not really know what caused the bubble or instability that formed our Universe to inflate and expand. String theory proposes that there are other universes outside of ours and that a collision between two may have triggered the big bang. However, we haven't yet found a way to test this, so it remains just an idea.

Answer provided by Jim Zebrowski


Image:K2S logosmall.jpg Question and Answer extracted from the book Kids to Space - by Lonnie Schorer


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