The above photo shows two galaxies colliding with each other. The larger galaxy, NGC 2207, will eventually absorb the smaller galaxy, IC 2163. One can already see that one arm of IC 2163 has been partially consumed by the other galaxy, and remains diminished in length. What is interesting is that despite what it may look like, little action occurs during a collision such as this. This is due to the staggering distance between stars, as they are so far apart that it is very rare for two stars to collide.
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