Is the Universe Infinite or Finite: Our Changing Universe

In the past, it was believed that either the Universe was infinite in size and age, or that it was a finite size and time was a property that didn't exist until the inception of the Universe. If the latter is was true, any events that happened before this era could have no affect on what is happening now. But ultimately, the question of whether or not it had a beginning was really one of metaphysics or theology. With the limited technological capabilities of previous eras, it was possible to account for what was observed using either theory--that the universe had existed forever, or that it was set in motion at some finite time.

However, the finite vs infinite discussion is far more complex than we'd ever imagined. In an infinite and static Universe, the observed expansion of the cosmos triggered by dark energy is nonsensical; it just doesn't make sense. You can't have something that is static and unchaining...but is expanding. However, let's leave this aside for a moment and delve into the history of our understanding of the cosmos.

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