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Sheril Kirshenbaum (sheril@mastodon.social)'s status on Wednesday, 05-Apr-2023 15:47:36 JST Sheril Kirshenbaum

The history of Earth as the length of a human’s outstretched arm - representing 4.5 billion years of time.
At this scale, humans emerged so recently that we could be filed off from a microscopic slice at the very tip of a fingernail.
Infographic by Katie Scott from original article in Nautilus. Details at https://ncse.ngo/deep-time-really-really-deep-man #space #time #science
In conversation Wednesday, 05-Apr-2023 15:47:36 JST from mastodon.social permalink
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1. DEEP TIME: If the timeline of Earth were mapped onto the human arm, it would begin around the shoulder where the earth formed about 4.5 billion years ago. Animals originated within the palm, but the myriad forms alive today exploded onto the scene around the first knuckle, in the Cambrian period. Blocks along the fingers represent the periods that followed, such as the Jurassic (dinosaurs) and the Cenozoic. Humans evolved at a microscopic slice at the tip of a fingernail. Infographic by Katie Scott from original article in Nautilus.
  https://files.mastodon.social/media_attachments/files/110/142/922/214/247/634/original/6176e1ce15b0fa50.png
2. Deep time is, like, really, really deep, man | National Center for Science Education
  
  Have you heard the joke about the museum guide who, when as

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