For nearly a century, something unseen has tugged at the cosmos. In the 1930s, Swiss astronomer Fritz Zwicky noticed galaxies in the Coma Cluster moving as if they carried far more mass than ...
The universe is packed with riddles, but few are as stubborn or as fascinating as dark matter. First proposed in 1933 by astronomer Fritz Zwicky, this elusive substance refuses to play by the rules: ...
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