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Its story

Theta Coronae Borealis is one of the clasps of the diadem that Greek mythology gave to Ariadne after her abandonment on Naxos. A blue type B star some 375 light-years away, it spins so fast that its atmosphere flings rings of gas into space —behaviour typical of so-called Be stars. Its light flickers with subtle variations that betray that circumstellar disc, a private crown nested inside the celestial one.