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New Galaxy Discovered That's Light on Dark Matter

posted by takyon on Monday April 01 2019, @09:35PM   Printer-friendly
from the gaaarlaktus dept.

An Anonymous Coward writes:

From New Atlas:

Some of the strongest evidence for dark matter to date has been discovered – and ironically, that's thanks to its absence. In a pair of studies published this week, astronomers have shed new light on dark matter through close observation of a galaxy previously found to have very little of the stuff, while the same team found a new example of a similar oddball galaxy.

It's generally believed that galaxies are held together through the gravitational influence of clumps of dark matter, so to find a galaxy with little to no dark matter was a surprise. And while it might sound like a strike against the theory, it actually ends up supporting it.

A Second Galaxy Missing Dark Matter in the NGC 1052 Group (DOI: 10.3847/2041-8213/ab0d92) (DX)

Still Missing Dark Matter: KCWI High-resolution Stellar Kinematics of NGC1052-DF2 (DOI: 10.3847/2041-8213/ab0e8c) (DX)

Original Submission

 
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  • (Score: 2) by FatPhil on Tuesday April 02 2019, @05:37AM (3 children)

    by FatPhil (863) <{pc-soylent} {at} {asdf.fi}> on Tuesday April 02 2019, @05:37AM (#823465) Homepage
    If the measurements are correct, they are incompatible with MOND, as galaxies the visibly look similar to these rotate differently to these. So something invisible must be making a difference. One might say that they're compatible with MOND where you get to tune a parameter for each individual galaxy, but in that case you might say that it's compatible with the light dots being sky megasheep being herded by different sky megashepherds. 'taint good testable physics, mate.
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  • (Score: -1, Flamebait) by Anonymous Coward on Tuesday April 02 2019, @05:44AM (2 children)

    by Anonymous Coward on Tuesday April 02 2019, @05:44AM (#823467)

    You are beyond hope sir. I mean really, you have lost touch with reality. Once you start denying that a priori predictions that turn out consistent with the data are support for the theory they came from, it is over. You have your religion and aren't giving it up.

    • (Score: 2) by FatPhil on Tuesday April 02 2019, @07:37PM (1 child)

      by FatPhil (863) <{pc-soylent} {at} {asdf.fi}> on Tuesday April 02 2019, @07:37PM (#823752) Homepage
      Absolute nonsense. All science is done by observing what is observable, forming a model, and then testing it against other observable things.
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      • (Score: -1, Troll) by Anonymous Coward on Wednesday April 03 2019, @02:00AM

        by Anonymous Coward on Wednesday April 03 2019, @02:00AM (#823897)

        What in the world are you responding to?

        This is hilarious.