NASA’s Hubble Charts Path for Roman with Gravitational Lenses

https://science.nasa.gov/missions/hubble/nasas-hubble-charts-path-for-roman-with-gravitational-lenses/ A sweeping barred spiral galaxy marks the spot in this image, but the real treasure is the gravitational lens in the lower-right corner, where a distant background galaxy is being magnified and distorted by the gravity of a closer galaxy. This observation is one of many gravitational lensing images taken by NASA’s Hubble Space Telescope in preparation for science with the new Nancy Grace Roman Space Telescope.