Neutron stars are some of the densest objects in the universe. They are the core of a collapsed megastar that went supernova, have a typical radius of 10 km—just slightly more than the altitude of Mt.
Out of the ominous debate over nuclear testing, an ominous phrase, “the neutron bomb,” echoed across the U.S. last week. It resounded through Congress, leaked into the press, was broadcast on TV and ...