March 18, 2021 – NASA and SpaceX have signed a joint agreement to formalize both parties’ strong interest in the sharing of information to maintain and improve space safety. This agreement enables a deeper level of coordination, cooperation, and data sharing, and defines the arrangement, responsibilities, and procedures for flight safety coordination. The focus of the agreement is on conjunction avoidance and launch collision avoidance between NASA spacecraft and the large constellation of SpaceX Starlink satellites, as well as related rideshare missions. A conjunction is defined as a close approach between two objects in space, usually at very high speed. The Starlink spacecraft are equipped with global navigation satellite service receivers to estimate orbital parameters, an ion propulsion system, and an autonomous maneuvering capability that provide data for prompt and proactive exchange of information. Both NASA and SpaceX benefit from this enhanced interaction by ensuring all parties involved are fully aware of the exact location of spacecraft and debris in orbit. SpaceX has agreed its Starlink satellites will autonomously or manually maneuver to ensure the missions of NASA science satellites and other assets can operate uninterrupted from a collision avoidance perspective. Unless otherwise informed by SpaceX, NASA has agreed to not maneuver its assets in the event of a potential conjunction to ensure the parties do not inadvertently maneuver into one another.