“Washington and Beijing are making efforts to avoid a crisis in space before it happens. The US and China have set up a direct link — or ‘hotline’ — allowing both nations to easily share information about activities in space. Specifically, the so-called space hotline is designed to help the space and military agencies of both countries to discuss ‘potential collisions, approaches, or tests,'”
Source: The US and China now have a ‘space hotline’ to avoid satellite warfare | The Verge