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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, @12:07AM (2 children)

    by FatPhil (863) <{pc-soylent} {at} {asdf.fi}> on Tuesday April 02 2019, @12:07AM (#823330) Homepage
    "Gravity is a product of mass, so the speed at which stars and galaxies move should be proportional to their mass."

    NOOOOOO!!!!
    --
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  • (Score: 0) by Anonymous Coward on Tuesday April 02 2019, @12:26AM (1 child)

    by Anonymous Coward on Tuesday April 02 2019, @12:26AM (#823333)

    Got somewhere you gotta be? Any way you slice it our current tech will have you dead before getting there, even if you weigh 7 tennis balls.

    • (Score: 1, Funny) by Anonymous Coward on Tuesday April 02 2019, @01:02AM

      by Anonymous Coward on Tuesday April 02 2019, @01:02AM (#823341)

      Why would I weigh seven tennis balls? Why can't I just weigh one and multiply the result by seven?