There’s a lot of traffic in space these days. Experts are starting to worry about a celestial traffic jam. The growth of the private space economy means many more satellites in orbit, especially low-earth orbit, or LEO. That increases collision risk. As a result, space traffic management is becoming one of the most important governance issues of the 21st century.

Fortunately, thanks to a new agreement between NASA and SpaceX, orbit just became a little safer.

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