Shifts in Quasar LightShifts in Quasar Lightquasars due to microlensing.New approach measures light shifts inAstrophysics of GalaxiesMeasuring Light Shifts in Distant QuasarsNew method measures position shifts in quasar images caused by gravitational microlensing.2025-07-20T12:39:27+00:00 ― 5 min read