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‘Sound laser’ is the most powerful ever made

A “phonon laser” emits particles of sound instead of light Dmytro Razinkov/Alamy A tiny, levitated bead is at the core of an unprecedentedly bright laser that shoots particles of sound instead of light. Just as a ray of light is made up of many particles called photons, sound consists of …

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Arctic Weather Satellite tested for life in orbit

ESA’s Arctic Weather Satellite being prepared for environmental tests at IAGB in Ottobrunn, Germany. The photograph shows the satellite on the shaker—a test that ensures that the satellite will survive liftoff. The satellite is equipped with a 19-channel cross-track scanning microwave radiometer, which benefits from the heritage technology of the …

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