Across
- 4. To further develop something so that it works more simply and efficiently
- 5. German translation: Raumfahrzeug
- 6. A synonym for border
- 8. German translation: von wichtiger Bedeutung; hohe Zugkraft
Down
- 1. You have to "..... ......." the earths atmosphere to reach the space
- 2. Term for pieces of metal floating around in space after the destruction of a satellite
- 3. Noun for reducing something unpleasant
- 7. Without this force we would float in the air