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“What the world’s most powerful telescope is teaching us about the origins of the universe” The James Webb telescope is allowing astronomers to time-travel into our deep, dark past Far off in space, in the middle of the Sword of Orion, just below the mythical hunter’s belt, is a hot and violent nebula swathed in…
“#New design for ‘optical ruler’ could revolutionize clocks, telescopes, telecommunications” Experimental setup to generate a set of stable frequencies in a cryogenically cooled laser microresonator frequency comb. The ring-shaped microresonator, small enough to fit on a microchip, operates at very low laser power and is made from the semiconductor aluminum gallium arsenide. Credit: NIST Just…