Across
- 2. Russian and Soviet space travellers
- 6. the loose rock and dust on top of a layer of bedrock
- 7. a mission with humans on board
- 8. the weight that a vehicle must carry
- 11. a metal that is made of two or more elements
- 12. a place that has the elements needed to sustain life
- 16. a celestial body that orbits a star but is not big enough for its gravity to make it into a sphere and has not cleared its orbit of other similarly sized bodies
- 17. a vehicle that lands on the surface of another celestial body and moves around the surface to gather data
- 18. a vehicle used for traveling through space
- 20. European Space Agency
- 21. a spacecraft that lands on the surface of another celestial body
Down
- 1. International Space Station
- 3. small, rocky objects that orbit a star
- 4. related to the Earth's Moon
- 5. an unpiloted spacecraft sent to gather information using scientific instruments and tools, usually controlled remotely
- 9. the curved path of a satellite (natural or manmade) around a celestial body
- 10. below the surface or top layer
- 13. a massive ball of hot gas
- 14. National Aeronautics and Space Administration
- 15. a huge collection of stars and their solar systems
- 19. any planet outside our solar system