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Oh snap! Take that, dark matter!

Journal by Gaaark

"Dark matter cannot be used to fudge them because in order for dark matter to predict galaxy rotation it must stay spread out and therefore it cannot be squeezed into little wide binary systems."

https://physicsfromtheedge.blogspot.com/2018/

His blog is an interesting read.
Dark matter is dying. RIP.

 

Reply to: Ummm

    (Score: 1) by khallow on Tuesday September 25 2018, @04:58PM

    by khallow (3766) Subscriber Badge on Tuesday September 25 2018, @04:58PM (#739751)
    So why do we think these stars are binaries rather than just nearby stars passing by each other? I note that three of the data points are for stars that are over a parsec apart (3.26 light-years). You'd expect (for our distance from the galactic center) stars to pass within that distance of either star every few ten thousand years. That means both stars have to be very massive in order for the orbits to be stable over longer periods of time. And in those cases, you may be greatly underestimating the mass of the stars and hence their deviation, if any, from general relativity (which incidentally is pretty close to Newtonian gravity at these distances).

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