File:Artist’s impression of the magnetar in the extraordinary star cluster Westerlund 1.jpg

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English: This artist’s impression shows the magnetar in the very rich and young star cluster Westerlund 1. This remarkable cluster contains hundreds of very massive stars, some shining with a brilliance of almost one million suns. European astronomers have for the first time demonstrated that this magnetar — an unusual type of neutron star with an extremely strong magnetic field — was formed from a star with at least 40 times as much mass as the Sun. The result presents great challenges to current theories of how stars evolve, as a star as massive as this was expected to become a black hole, not a magnetar.
Date
Source http://www.eso.org/public/images/eso1034a/
Author ESO/L. Calçada

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18 August 2010

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current12:48, 12 October 20134,000 × 2,827 (8.34 MB)Stas1995User created page with UploadWizard
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