space

3. The force that moves something forward.
5. A particular way of seeing or understanding something.
7. A sudden and large increase.
8. Harmful substances or waste in the environment.
10. A condition where gravity is very weak, creating near-weightlessness.
12. A feeling that motivates people to act or create.
13. Energy in the form of waves or particles that can be harmful at high levels.
14. A new idea, method, or invention.
16. Providing good results without costing too much money
20. The process of forming crystals.

1. The state of continuing to live despite difficulties.
2. A group of satellites working together in orbit.
4. A rare isotope of helium that could be used for future nuclear fusion energy.
6. Broken or discarded pieces of something.
9. The path a satellite or planet follows around a larger body.
11. Possible and practical to do.
15. An enemy or opponent.
17. A space completely empty of matter, including air.
18. To make something less severe or harmful.
19. The act of establishing a settlement in a new place.