Cosmic Calendar: Mammals

On Carl Sagan’s Cosmic Calendar (illustrated as a comic strip here), which maps the entire history of our cosmos onto a single year, today represents the evolution of mammals, the group which includes our own species, 0.2 billion years ago.

3 Comments on “Cosmic Calendar: Mammals”

  1. Pingback: What to look forward to in December at HP | Humanistic Paganism

  2. Pingback: Cosmic Calendar Special | Humanistic Paganism

  3. Pingback: Cosmic Calendar Countdown - ElfDirect.com

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