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dark neutron starsCaltech
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87% Informative
Astronomers find 21 rare pairs of neutron stars in binary systems with Sun -like stars.
Neutron stars are dense burned-out cores of massive stars that exploded.
The discovery comes as a surprise because it is not clear how an exploded star winds up next to a Sun .
Most of the newly discovered systems are located within 3,000 light years of Earth .
Other Caltech authors include graduate student Natsuko Yamaguchi and Professor of Astronomy Andrew Howard .
Additional authors include Hans-Walter Rix and René Andrae of the Max-Planck Institute for Astronomy , David Latham and Allyson Bieryla of the Center for Astrophysics/Harvard & Smithsonian .
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