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Robert B. Hubbell's avatar

A quick note about the dating of events in the newsletter and other references to events in the evolution of life, the universe, and everything. For brevity, I did not include many important nuances or explain that some dates and events (like The Big Bang) are the subject of ongoing scientific debate and inquiry. And the universe may be teeming with life; we just haven't found it (yet). (But the Fermi Paradox must be considered.) The existence of RNA viruses suggest that that there may have been an RNA life form that lives on in DNA-based molecules. Etc. I am happy to have readers provide detail and nuance that I did not include because of my effort to be brief, but I would be disappointed if anyone felt I was being superficial or sloppy. I tried otherwise.

As noted below, many readers comment that "civilization" began earlier than 3,500 BCE, the emergence of the Mesopotamian cities. Drawing that line is difficult and definitional.

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LaurieOregon's avatar

A perfect piece to end 2022, Robert. Thank you. The photos from the James Webb Space Telescope also put things in perspective. One of the newer Webb photos shows a cartwheel galaxy, which the BBC says has a diameter of about 145,000 light years. 1 light year equals 5.88 trillion miles, so the diameter of this cartwheel galaxy is 85,260,000 trillion miles. We humans might not matter to the universe, but it's sobering to remember that we matter to each other. Dignity, courtesy, respect, kindness.

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