| weapon(noun, technology, space, pollution, debris) |
| space debris environment population(noun, expression, technology, entity, space) |
| space debris mitigation handbook(noun, expression, technology, entity, space) |
| space debris mitigation standard(noun, expression, technology, entity, space) |
| space debris reference model(noun, expression, technology, entity, space) |
| space debris removal from orbit(noun, expression, technology, entity, space) |
| space debris steady growth(noun, expression, technology, entity, space) |
| space debris study group(noun, expression, technology, entity, space) |
| space debris working group(noun, expression, technology, entity, space) |
| European Space Agency space debris telescope(noun, expression, technology, space, pollution) |
| European conference on space debris(noun, expression, technology, entity, pollution) |
| European space debris handbook(noun, expression, technology, entity, pollution) |
| Interplanetary contamination(noun, expression, technology, space, pollution) |
| Kounotori integrated tether experiment(noun, expression, technology, space, pollution) |
| National Aeronautics and Space Administration orbital debris observatory(noun, expression, technology, space, pollution) |
| advisory group on space debris(noun, expression, technology, entity, pollution) |
| beam park(noun, expression, technology, space, pollution) |
| booster(noun, technology, space, pollution, debris) |
| committee on space debris prevention designe standards(noun, expression, technology, entity, pollution) |
| dead spacecraft(noun, expression, technology, space, pollution) |