Trio of dead stars upholds a key part of Einstein’s theory of gravity

Celestial orbital dance conforms with physicists’ expectations for ultradense objects

dead stars illustration

TRIPLE THREAT  A threesome of dead stars has allowed a new test of a tenet of Einstein’s theory of gravity. The trio includes a pulsar (illustrated, with bands of electromagnetic radiation in blue) in orbit with a nearby white dwarf. A second white dwarf orbits farther afield (red, upper right).

NRAO Outreach/vimeo.com (CC BY-NC 3.0)

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