Fil:Curious spiral spotted by ALMA around red giant star R Sculptoris (data visualisation).jpg

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English: Observations using the Atacama Large Millimeter/submillimeter Array (ALMA) have revealed an unexpected spiral structure in the material around the old star R Sculptoris in the constellation Sculptor. This feature has never been seen before and is probably caused by a hidden companion star orbiting the star. This slice through the new ALMA data reveals the shell around the star, which shows up as the outer circular ring, as well as a very clear spiral structure in the inner material.
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Opphavsperson ALMA (ESO/NAOJ/NRAO)

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10. oktober 2012

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