Eclipsing Stars' Light Shift Quantifies Distance To Earth | Video
A pair of binary stars in the Large Magellanic Cloud eclipse one another on each orbit. By studying changes in the duo's brightness, astronomers have come up with the most accurate assessment of the distance between us and them (163,000 light-years).
Credit: ESO/Nick Risinger (skysurvey.org)/R. Gendler/L. Calçada