Two Russian satellites got within 10 feet (3 meters) of each other recently, demonstrating a sophisticated set of orbital maneuvering skills.

'Whatever Russia is testing, it's sophisticated': 2 Russian satellites get within 10 feet of each other in orbit

Source: space
Source Link: https://www.space.com/space-exploration/launches-spacecraft/whatever-russia-is-testing-its-sophisticated-2-russian-satellites-get-within-10-feet-of-each-other-in-orbit