Galaxy Clusters
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Can dark matter interact with itself?
The nature of dark matter, the invisible matter that holds galaxies together, still evades scientists almost a century after first inferring its existence. Since we cannot observe dark matter directly, like we can detect a star through the light it emits, astrophysicists study how its... click to read more
Views 3334
Reading time 3 min
published on May 10, 2023
A missing ingredient in dark matter theories?
In 1933, Fritz Zwicky, observing the Coma galaxy cluster, noted that single galaxies were moving too fast for the cluster to remain bound, according to the measure of visible mass. Only a far more significant amount of invisible matter could explain the strong gravitational force... click to read more
Views 3538
Reading time 3.5 min
published on Mar 31, 2021
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