You know his theory that light from a distant object would bend around a center of mass between the observer and the object, creating at least two images.
(You; know; his theory that light from a distant object would bend around a center of mass between the observer and the object) (light from a distant object; would bend; around a center of mass between the observer and the object)
You light from a distant object
know would bend
his theory that light from a distant object would bend around a center of mass between the observer and the object
around a center of mass between the observer and the object