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Pulsar-orbiting exoplanets rare: first extrasolar worlds ever found have few counterparts.
Planets and pulsars, the whirling cores of dead massive stars, appear to be an unlikely match. Most of these pulsating stellar corpses can't nurture fledgling planetary systems, new research suggests.
Scrutiny of 151 pulsars turned up no evidence of planets, researchers report in the Aug. 10 Astrophysical Journal. Planet nurseries must therefore rarely appear in the wakes of supernova explosions out of which pulsars are born, Matthew Kerr and colleagues propose.
"I was fairly...
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