| old satellite(noun, technology, entity, waste, pollution) |
| operational satellite(noun, technology, entity, waste, pollution) |
| orbital debris co-ordination working group(noun, technology, entity, waste, pollution) |
| orbital debris remove(noun, technology, entity, waste, pollution) |
| perfluorooctanoic acid(noun, technology, entity, waste, pollution) |
| planetary protection(noun, technology, entity, waste, pollution) |
| plastic(noun, technology, entity, waste, pollution) |
| printed circuit board(noun, technology, entity, waste, pollution) |
| printer(noun, technology, entity, waste, pollution) |
| processor(noun, technology, entity, waste, pollution) |
| quicksilver(noun, light, fast) |
| re-usable(noun, technology, entity, waste, pollution) |
| recycling of e-waste(noun, technology, entity, waste, pollution) |
| reentering space debris(noun, technology, entity, waste, pollution) |
| refrigerator(noun, technology, entity, waste, pollution) |
| relative age |
| rocket(noun, light, fast) |
| secondary scrap(noun, technology, entity, waste, pollution) |
| self-removal(noun, technology, entity, waste, pollution) |
| sheet lightning(noun, light, fast) |