"Study Unveils Enormous 'Spider' Pulsar"

Astronomers from Stanford University have conducted joint X-ray and optical observations of the massive "spider" pulsar PSR J2215+5135, revealing new insights into its nature. The study found that the neutron star in the system has a mass of approximately 2.15 solar masses and that the companion star loses mass at a rate of 0.0003 Earth masses per year. The findings suggest that J2215 may eventually become an isolated millisecond pulsar.