10 June 2025

The "cosmic calendar" - depicted visually and verbally


This subject has been filmed before, including perhaps by Carl Sagan? but it's worth emphasizing.  Posting this now so that later I can add extended text from Orbit 13 of Orbital, which has I believe the best text description of the cosmic calendar.

Addendum:  I'll add the text description now so I can quit blogging for a couple weeks.  With apologies to the author/publisher - I really shouldn't excerpt so much, but here goes...

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