"While gravitationally lensed light sources are often shaped into an Einstein ring, due to the elongated shape of the lensing galaxy and the quasar being off-ce

"While gravitationally lensed light sources are often shaped into an Einstein ring, due to the elongated shape of the lensing galaxy and the quasar being off-centre, the images form a peculiar cross-shape instead." [1] [1] https://en.wikipedia.org/wiki/Einstein_Cross https://en.wikipedia.org/wiki/Einstein_Cross