... Each day we feature a different image or photograph of our fascinating universe, along with a brief explanation written by a professional astronomer. July 11, 1995 . Microlensing of the Einstein Cross . ... Here a very distant QSO happened to be placed right behind a massive galaxy. The gravitational effect of the galaxy on the distant QSO was similar to the lens effect of a drinking glass on a distant street light - it created multiple images. ...