Raffaella Margutti

Years after a supernova flash, astronomers noticed a growing radio signal. By combining several telescopes into a giant antenna, they spotted a tiny, almost stationary source. Everything points to a young pulsar — a spinning neutron star that, like a lighthouse, beams narrow jets of radiation. If co

Normally, black holes rip stars apart in the centers of galaxies. A new discovery shows that some black holes lurk in the outskirts. Astronomers spotted a flare tens of thousands of light-years from the center of a large galaxy. A computer algorithm trained on similar events helped identify it. Soon