Researchers say parts of the Moon may become designated crash zones for defunct satellites.
Lunar orbit is expected to grow crowded as future bases and missions expand.
Unlike Earth, the Moon lacks an atmosphere to burn up old spacecraft.
As a result, many satellites must be deliberately crashed into the surface.
Uncontrolled impacts could damage scientific equipment and historic landing sites.
Scientists warn collisions create dust clouds, vibrations, and long surface scars.
Agencies plan to establish designated impact zones far from sensitive areas.
Supporters say controlled crashes could also help study the Moon’s internal structure.
