World Science Scholars

2.4 Dark Matter Concentration

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    • A paper co-authored by Professor Natarajan and published in Science on September 11, 2020, combined observations of galaxy clusters from the Hubble Space Telescope with the European Space Agency’s Very Large Telescope in Chile to measure the amount of gravitational lensing produced by dark matter. They found that dark matter concentrations were up to ten times higher than those predicted by mathematical models. What sorts of implications do you think this has for our understanding of the universe?

    • It has also been observed (HST) that there are about ten times as many galaxies in our universe than estimated earlier. Unfortunately, there has (to my current knowledge) not been any follow-up analysis as to whether this discovery could “balance” the suggested amount of dark matter”. But given the failure of any evidence of a dark matter particle despite enormous efforts over a large timeframe, given this discovery of much more matter in our universe than estimated, my conclusion would be to dismiss dark matter and turn to the real matter that had not been seen earlier.

    • I completely agree with Klaus Cormann’s ascersions, let find all the barrionic matter first.

    • Nothing to add

    • Nothing to add, very good.

    • Very good nothing to add, except I have no idea why I can not move on t9 the next step. Poor course design? No feedback?

    • “Dark matter” seems to be the “dark energy” ‘s part that has visual implications to the galaxies’ movement. “Dark” refers to the empty-space’s mass/energy; in other words the mass/energy that the spacetime manifold possesses.

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