The James Webb Space Telescope images a galaxy cluster where the apparent angular separation between gravitational lenses is 0.8 arcseconds. If the cluster is 5 billion light-years away, and the lensing effect scales with mass and inverse distance, if a nearby cluster L tallies a separation of 1.6 arcseconds at equal distance, what is the ratio of the lensing mass of the distant cluster to the nearby one? - Veritas Home Health
Mar 01, 2026
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