Huge ring-like structure on the surface of Jupiter’s moon Ganymede may have been caused by a violent impact | Research at Kobe
https://www.kobe-u.ac.jp/research_at_kobe_en/NEWS/news/2020_08_05_01.htmlNASA's Juno Takes Photos of Ganymede, Jupiter's Biggest Moon - The New York Times
https://www.nytimes.com/2021/06/08/science/nasa-juno-jupiter-ganymede.htmlNASA's Juno to get a close look at Jupiter's moon Ganymede
https://phys.org/news/2021-06-nasa-juno-jupiter-moon-ganymede.htmlSee the First Images NASA’s Juno Took As It Sailed by Ganymede | NASA
https://www.nasa.gov/feature/jpl/see-the-first-images-nasa-s-juno-took-as-it-sailed-by-ganymede