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Explosion de colores. NASA public domain image colelction.

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Explosion de colores. NASA public domain image colelction.

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Español: Explosion de coloresEnglish: Swift X-ray observations of galaxy NGC 5408 indicate its ultraluminous X-ray source undergoes periodic changes every 115.5 days. This cycle, astronomers suspect, is linked to the orbit of a donor star around a middleweight black hole, as shown in this artist's view.

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25/08/2009
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NASA
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