Researchers say parts of the Moon will be set aside as spacecraft graveyards for defunct satellites.
Lunar orbit is expected to become crowded as future missions and Moon bases expand.
Without an atmosphere, old satellites cannot burn up like those orbiting Earth.
Most will need to be deliberately crashed onto the lunar surface.
Scientists warn random impacts could damage historic sites and sensitive instruments.
High-speed crashes also create dust and vibrations across wide areas.
Agencies including NASA and the European Space Agency support designated impact zones.
Researchers say controlled crashes could also help study the Moon’s internal structure.
