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Early sun’s rotation rate was just right for us, it turns out

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arcs from an active region of the Sun’s surface/NASA

A science writer explains,

Our early Sun’s rate of rotation may be one reason we’re here to talk about it, astrobiologists now say. The key likely lies in the fact that between the first hundred million to the first billion years of its life, our G-dwarf star likely had a ‘Goldilocks’ rotation rate; neither too slow nor too fast.

Instead, its hypothetical ‘intermediate’ few days rate of rotation guaranteed our Sun was active enough to rid our newly-formed Earth of its inhospitable, hydrogen-rich primary atmosphere. This would have enabled a more habitable, secondary atmosphere composed of nitrogen, carbon dioxide, hydrogen and oxygen to eventually form. Bruce Dorminey, “Early Sun’s ‘Goldilocks’ Rotation Rate May Be Why We’re Here” at Forbes

It’s amazing how much literature gets written to disconfirm the fine-tuning of our position for life. One wonders what the response at Forbes will be.

See also: Evolutionary psychologist slams the fine-tuning of the universe A reader commented on the sheer outdated-ness of Barash’s remarks. But, reader, naturalist believers are not asking for more. It’s not clear that, in Barash’s line of work, one needs to know much new stuff, as opposed to just keeping the old buzz going.


What becomes of science when the evidence does not matter? (fine-tuning)

The following are a couple of papers on the subject: http://iopscience.iop.org/article/10.1088/2041-8205/754/2/L26/pdf https://www.kitp.ucsb.edu/sites/default/files/preprints/2016/16-010.pdf ET
@ET, wouldn't all the other stars of it's age type have had similar magnetic braking effects? So it's still anomalous. Or perhaps the Sun's rotation rate is another example of fine tuning. aarceng
Cosmo- The present rotation rate of the Sun is not the same as how it started out. The current slow rate is allegedly due to magnetic braking ET
I believe I learned in a basic astronomy class that our sun's rotation rate is unusually slow. In the slowest 1% of stars of its age and type. So the goldilocks condition is not the typical condition it would seem. Cosmo

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