SETI watched a pulsar flicker for months and found space keeps shifting

A distant pulsar’s radio signal flickers as it passes through space, much like stars twinkle in Earth’s atmosphere. By monitoring this effect for 10 months, researchers watched the pattern slowly evolve as gas, Earth, and the pulsar all moved. Those changes create minuscule delays in the signal, but measuring them helps keep pulsars incredibly precise. The findings also aid SETI scientists in spotting signals that truly come from beyond Earth.