The 'Cosmic Lighthouse': Scientists Directly Measured the Magnetic Field Inside a Dead Star's 37-Light-Year Tail
21,000 light-years away, the neutron star PSR J1101-6101 drags a tail of light nine times longer than the distance to the nearest star. NASA's IXPE X-ray satellite has directly measured the magnetic field of this 'cosmic lighthouse' for the first time. SORABUMI explains.