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![](https://webarchive.library.unt.edu/web/20090509013814im_/http://www.nsf.gov/images/x.gif) Press Release 08-116 In Unique Stellar Laboratory, Einstein's Theory Passes Strict, New Test
![](https://webarchive.library.unt.edu/web/20090509013814im_/http://www.nsf.gov/images/greenlineshort.jpg)
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![Illustration of the only known pusar-pulsar system.](https://webarchive.library.unt.edu/web/20090509013814im_/http://www.nsf.gov/news/mmg/media/images/double_pulsar1_f.jpg) |
This double pulsar PSR J0737-3039A/B is the only known pulsar-pulsar system, that is, two neutron stars orbiting each other and both visible as radio pulsars.
Credit: NRAO |
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![Cover of July 4 issue of Science Magazine.](https://webarchive.library.unt.edu/web/20090509013814im_/http://www.nsf.gov/news/mmg/media/images/double_pulsar2_f.jpg) |
Researchers presented their work in the July 4 issue of Science Magazine.
Credit: Copyright 2008 AAAS |
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