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RE: Dark blobs as stealthy dark matter

in #steemstem • 6 years ago (edited)

Wow! Glad to see you are back. it is a long time I have not read anything (post or comment) from you! Are you back?

Two of the most popular alternatives to dark matter are the Modified Newtonian Dynamics (MOND) and some sort of electromagnetic coupling (Electric Universe Model).

MOND is indeed very alive and compatible with data (to a smaller extent than the dark matter paradigm, as you said). This is what I understood in the following sentence: "All cosmological data, taken together with the Standard Model of cosmology, points to its existence." The wording "Standard Model of cosmology" is important. Note that in many other posts I wrote on dark matter, I mention the modified gravity alternative (but I don't do it systematically; this depends on my mood ;) ).

Concerning the electric universe theory, I must disagree with you. To my knowledge, this theory has been debunked and proved wrong. After quickly googled five minutes ago, this is still the case.

6 years ago in #steemstem by
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     6 years ago 

    Thanks for remembering me.

    Something is causing additional cohesion on the stars in the outer rims of galaxies.

    If gravity causes the strange rotation of galaxies, then either there is more mass (dark matter) or gravity is a bit stronger at vast distances than predicted (MOND). Gravity is not the only force that acts over great distances, Electromagnetic forces can also.

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     6 years ago (edited)

    Yes, but the electric universe theory does not agree with many data. If a theory does not reproduce data, well... Also, their supporters are now most on the conspiracy theory business than in science, at the moment.