Star Material By observing the oscillations of neutron stars that have merged, astronomers could determine whether their interior is squishy or solid, writes Paul Lasky for Nature. One mystery is whether neutron stars contain quark matter — a squishy goo that compresses under gravity. In 2021, Jonathan O'Callaghan reported for Quanta that neutron stars of different masses were the same size, which implies that they do not contain quark matter. Young on the Inside Scientists are working on drugs that fight aging by killing decrepit cells that sabotage tissues, writes Amber Dance for Knowable Magazine. When old cells become "senescent," they stop dividing and secrete molecules that cause inflammation. Steven Strogatz spoke with researcher Judith Campisi about senescence and aging for Quanta's podcast "The Joy of Why" in July. | |