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Giant Liquid Mirrors Could Revolutionise the Hunt for Habitable Worlds


A team of researchers has cracked the code for building space telescopes with mirrors the size of a soccer field, not from perfectly figured glass, but from liquid floating in zero gravity! The new research reveals how a 50-metre liquid mirror telescope could maintain its optical quality for decades despite the constant slewing motions needed to observe different stars, with deformations taking years to propagate from the edges toward the centre. The idea could enable the next generation of space telescopes capable of directly imaging Earth-like planets around other stars, potentially answering the ultimate question: are we alone in the universe?

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