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Decoding Dark Matter: Insights From JWST’s Discovery of an Einstein-Ringed Galaxy

The James Webb Space Telescope discovered an ancient galaxy, JWST-ER1g, which exhibits a phenomenon called strong gravitational lensing, forming an Einstein ring. This galaxy, rich in dark matter, provides new insights into dark matter's properties and density. Last September, the James Webb Space

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An astronomy club in French Guiana is keeping the memory of Jean Richer alive. In 1672 Richter spent weeks in the Amazon rainforest, staring at the night sky, sending reports to his partner in Paris — Giovanni Cassini — who used Richter's work to estimate the distance to the sun for the first time. »