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Published online 5 July 2006 | Nature | doi:10.1038/news060703-11
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Starshade could make planet-hunting cheap
Could a flying trash bag help to spot new worlds?
It has long been thought that spotting Earth-like planets around distant stars will require space-based telescopes with exquisite optics. But now, one astronomer thinks he can do it with an already-planned telescope and what he modestly describes as "a big fuel tank with a hefty bag attached".
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