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Astronomers have developed several versions of rotating liquid metal telescopes, which use the force of gravity and centripetal force to create a natural telescope lens.
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Astronomers have developed several versions of rotating liquid metal telescopes, which use the force of gravity and centripetal force to create a natural telescope lens. They work, but there's a downside: they can only point straight up, in the opposite direction of gravity. A new paper is investigating how electromagnets could work with magnetic fluids (ferrofluids) to shape the liquid into a spherical shape and give it more viewing angles.
