Contact: Lisa-Joy Zgorski
lisajoy@nsf.gov
703-292-8311
National Science Foundation

In Unique Stellar Laboratory, Einstein's Theory Passes Strict, New Test

Caption: 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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