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On 2016-05-23 19:19, John Clark wrote:<br>
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<p><font size="4">We know from the percentage of the elements
Hydrogen, Deuterium, Helium and Lithium how much regular
matter was around one minute after the Big Bang when
nucleosynthesis cooked up these elements, and there is no
room for Dark Matter.</font></p>
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Huh? Can you unfold how the nucleosynthesis data doesn't fit dark
matter? Last time I checked the literature (fall last year) there
was a fairly decent parameter window of the nuclei/DM parameter
space, where lithium abundance was used as a sensitive constraint on
the properties of DM. <br>
<br>
I thought the gravitational lensing studies ruled out black hole
halos fairly strongly.<br>
<br>
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