Tuesday, October 22, 2024

star struck

History of astronomy typically begins with the ancient civilisations and the ways stargazing changed their view of the world. The book "Starborn" by Roberto Trotta goes back further. The author explores the question how humans evolved under a starry sky and whether we would have turned out different under a permanent cloud cover. Some of the answers are mindboggling yet convincing.

Read all about it in my latest essay review:

Stars in their eyes

Chemistry & Industry Volume 88, Issue 10, October 2024, Page 35

access via:

Wiley Online Library (paywalled PDF of the whole review section)

SCI (premium content, ie members only)

As always, I'm happy to send a PDF on request.

Here's a snippet:

More intriguing still, Trotta recounts a hypothesis that argues in favour of a shared human experience of observing the stars dating back more than 70,000 years ago. The Pleiades, as we know them today, are six stars, but many cultures from Ancient Greeks through to Australian Aborigines associate these stars with a legend of seven sisters, and one of them disappearing. With modern telescopes, astronomers can see the seventh sister, too close to one of the others to be distinguishable by the naked eye. They also see a few more, so there is no explanation for the number seven. Calculating back the movements, however, they have found that around 100,000 years ago, an average human eye would have seen seven Pleiades. Thus the myth of the seventh sister lost could be the oldest evidence of human observation of the night sky, as well as just about the only thing that humanity has preserved from the time before the expansion out of Africa.

I don't think the title captures the content of the book very well - it makes me think of how our very atoms have come from stardust, whereas the main gist of the book is how our minds have been shaped by the sight of the firmament. Hence the title of this entry.

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