Researchers say parts of the Moon will be set aside as graveyards for defunct satellites.
Lunar orbits are expected to fill as space agencies plan bases, mining, and research missions.
Unlike Earth, the Moon has no atmosphere to burn up old spacecraft.
Most dead satellites will need controlled crash-landings on the surface.
Scientists warn random impacts could damage historic sites and sensitive instruments.
Designated impact zones would reduce debris and protect key locations.
Agencies including NASA and the European Space Agency support the approach.
Some researchers say controlled crashes could also help study the Moon’s structure.
