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Perseus X-1 |
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Perseus X-1 [′pər·sē·əs ′eks ′wən] (astronomy) The strongest known x-ray source outside the Milky Way galaxy, centered on the Seyfert galaxy NGC 1275. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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