Gregory's Server@richardwerskine "How long" is hard to answer where the scientific understanding is evolving! The most recent "aha" moment was the detection of neutron star-neutron mergers with LIGO. Theories for the origin has been around for a few decades ...
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 @richardwerskine I'm not able to trace the history of how the ideas changed here - it's not just the aha moment, but also some theoretical problems with getting the reactions to actually occur in the supernova ejecta. |
@vicgrinberg thanks. I had some memory of belief in the periphery of a supernova (where shock wave hits) being candidate for heavier elements like gold. Did my memory fail me; and did the ‘aha’ moment kill that idea?