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Main message: “Although counterintuitive, the existence of a galaxy without dark matter negates theories that try to explain the Universe without dark matter b
by acqq 9y ago
Main message:
“Although counterintuitive, the existence of a galaxy without dark matter negates theories that try to explain the Universe without dark matter being a part of it [3]: The discovery of NGC 1052-DF2 demonstrates that dark matter is somehow separable from galaxies. This is only expected if dark matter is bound to ordinary matter through nothing but gravity.”
- TillE 9y agoThat does seem fairly convincing, though it also highlights the lack of precise theories about dark matter: what is it, and how did it get there? Hopefully these are answerable questions some day.
- acqq 9y agoThe theory is as precise as we can observe it, the match is quite good compared to the alternatives: https://www.duo.uio.no/bitstream/handle/10852/52374/FinalReport.pdf https://www.duo.uio.no/bitstream/handle/10852/52374/FinalRep...