This wide-field view of the sky around the bright star system Alpha Centauri was created from photographic images forming part of the Digitized Sky Survey 2. (Image credit: ESO/Digitized Sky ...
The mystery of the Hubble tension has deepened with the startling finding that the Coma Cluster of galaxies is 38 million light-years closer than it should be. In recent years, trouble has been ...
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