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With these facts in mind I wonder what insights the binary star institute came up about the Pleiades as a possible dual star ⭐️ candidate that we are rotating nearer and farther away from in this 24,000 year cycle?
Steve, I remember that the Binary Research institute made hypotheses on the Sirius binary system being a candidate for SY's sun's dual. They were just unproved hypotheses though. I couldn't find any references to the Pleiades in a quick search, but we should dig deeper.
The initial brown star hypothesis as a dual must be trashed because that would be very visible in the infrared, as the article you link mentions. In my layman's opinion, the best candidate for a dual star would still be a very small black hole.
Current research in astronomy is the search for such small and inactive black holes, which do not emit any radiation, on the basis of gravitational effects. Something may come up. like the recent discovery of Gaia Black hole, a previously undetected BH just around the corner, so to speak, which is part of a binary system itself. This shows that binary systems with black holes are not uncommon.
https://en.wikipedia.org/wiki/Gaia_BH1https://earthsky.org/space/closest-black-hole-gaia-bh1-gemini-north/