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On Sun, 22 Sep 2024 03:20:59 -0000 (UTC), Brett wrote:
Astronomers have only found a dozen Einstein Rings ...
It only took a minute to prove that false. From
<https://en.wikipedia.org/wiki/Einstein_ring>: “Hundreds of
gravitational lenses are currently known”. Also: “The degree of
completeness needed for an image seen through a gravitational lens to
qualify as an Einstein ring is yet to be defined.”
And there are other, subtler kinds of gravitational lensing. A link
from <https://en.wikipedia.org/wiki/Gravitational_lens> mentions a
survey of older data that discovered 1210 new lenses, doubling the
number known.
Not that this really has anything to do with quantum theory ...
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