A hypothetical object called a straight cosmic string (which may have been formed in the early universe and may persist today) makes the \(r, \theta\) space around it conical. That is, set an infinite straight cosmic string along the \(z\) axis; the two-dimensional space perpendicular to this, measured by the polar coordinates \(r\) and \(\theta\), then has the geometry of a cone rather than a plane. Suppose there is a cosmic string between Earth and a distant quasi-stellar object (QSO). What might we see when we look at this QSO? [Assume light travels in least-time paths (here also least-distance paths) relative to nearby paths.]