Shuo Xiao

A powerful radio pulse from a distant galaxy revealed eight fading bursts—like a cosmic bell that tolled and then went silent. This is the first observation of fading rhythms in such signals, and it reveals the trembling of the magnetic cocoon around the ultra-dense core of a dead star. From the rhy

When a tiny black hole evaporates, it releases a gamma-ray flash. Nearby black holes produce curved waves; distant ones, flat. Timing differences between spacecraft can gauge that curve to measure distance. No nearby events yet, but future missions could spot primordial black holes — tiny heavy remn