Word: coronagraph
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Dates: during 1980-1989
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...scientists finally employed an instrument called a coronagraph, which can block out the most blinding light of a star, making a kind of eclipse. With Beta in shadow, Terrile and Smith then attached a special detector to the telescope that picked up the weakest light signals around Beta. The resulting image of an encircling disc looked remarkably similar to our own solar system. Analyzing the configuration of the disc with a computer, they found that some matter may have condensed to form planets...