We still don't know what is Dark Matter. We can see its effects but we don't know what it's made of. However, with their latest publication, Dr Amruth Alfred suggests that dark matter should be made of axions (which are one of the candidates among other particles).
Paper by Dr Amruth Alfred and his team:
https://www.nature.com/articles/s41550-023-01943-9
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00:00 Intro
02:19 WIMPs vs Axions
06:35 Observations
15:54 Implications for Cosmology
18:54 Where axioms come from
23:57 Difficulties with observations
27:54 How can the results be confirmed or debunked
31:13 Open-mindness in science
36:50 Gravitational lenses
54:35 Outro
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https://youtu.be/M7IO6FkHRhE
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