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  • Released Thursday, November 6, 2014
  • Updated Thursday, July 27, 2017 at 10:22AM
  • ID: 11680

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Scientists observe colliding stellar winds from two colossal stars.

Learn more about Cygnus OB2 #9's stars, their orbits and the interaction of their stellar winds in this video.

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This illustration shows the highly eccentric orbits of the two stars found in Cygnus OB2 #9.

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Space telescopes monitored X-ray emissions (orange) from Cygnus OB2 #9 in the months leading up to the stars' closest approach.

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As the stars grew closer, X-ray emissions increased.

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Around closest approach, when the stars were separated by less than three times Earth's average distance from the sun, X-ray emissions peaked.



Credits

Please give credit for this item to:
NASA's Goddard Space Flight Center
Cover image courtesy of NASA/C. Reed
X-ray images courtesy of NASA/GSFC/S. Immler



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