Researchers say parts of the Moon will become designated crash zones for defunct lunar satellites.
Lunar satellite numbers are expected to rise sharply as space agencies plan bases and long-term missions.
Unlike Earth, the Moon lacks an atmosphere to burn up old spacecraft safely.
As a result, operators may need to deliberately crash satellites onto the surface.
Scientists warn uncontrolled impacts could damage historic sites and sensitive instruments.
Designated graveyard zones would limit debris and protect areas of scientific value.
International agencies are now working on rules to manage lunar satellite disposal safely.
