1923 Vs 2023: Size of The Observable Universe

Before the 1920's it was a common understanding that the universe only had one Galaxy and that was the Milky Way Galaxy...but just in a few short years, one astrophysicist changed everything! We have come so far in the last one hundred years! Watch and remember and be amazed what the human mind, through thousands of Scientists, has accomplished... Where will we be in another one hundred years if we have not eradicated the human race?

Enjoy!
Kerry


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