NASA's Chandra Reveals Hidden Companion Behind Giant Star's Repeated Outbursts

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Astronomers using NASA's Chandra X-ray Observatory have identified the cause of repeated outbursts from a massive, unstable star. A newly published study in The Astrophysical Journal describes a previously hidden companion object. The companion periodically draws material away from the giant star as the two objects orbit each other every 113 days. The findings explain the regular pattern of the star's eruptions that had puzzled researchers.

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