SDSS J1050+0017, also known as ClG J1050+0017, is approximately 6 billion light-years away from Earth. The gigantic mass of this galaxy cluster creates the fascinating phenomenon of strong gravitational lensing.SDSS J1050+0017’s gravity bends light coming from behind it in a similar way to how the base of a wine glass bends light.The effects of this lensing can be clearly seen as curved streaks forming a circular shape around the center of the Hubble image.Astronomers can use these distorted galaxies to calculate the mass of the cluster — including the mass of the dark matter within it — and to peer...